Driver time formatting.

Bumps [golang.org/x/sys](https://github.com/golang/sys) from 0.14.0 to 0.15.0.
- [Commits](https://github.com/golang/sys/compare/v0.14.0...v0.15.0)

---
updated-dependencies:
- dependency-name: golang.org/x/sys
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/cpu.yml

@@ -0,0 +1,40 @@
+name: CPUs
+
+on:
+  workflow_dispatch:
+
+jobs:
+  test-386:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        lfs: 'true'
+
+    - name: Set up
+      uses: actions/setup-go@v4
+      with:
+        go-version: stable
+
+    - name: Test
+      run: GOARCH=386 go test -v ./...
+
+  test-arm:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        lfs: 'true'
+
+    - name: Set up
+      uses: actions/setup-go@v4
+      with:
+        go-version: stable
+
+    - name: Install QEMU
+      uses: docker/setup-qemu-action@v3
+
+    - name: Test
+      run: GOARCH=arm64 go test -v ./...

.github/workflows/cross.sh

@@ -19,4 +19,4 @@ echo darwin-flock  ; GOOS=darwin    GOARCH=amd64 go build -tags sqlite3_flock .
 echo darwin-nosys  ; GOOS=darwin    GOARCH=amd64 go build -tags sqlite3_nosys .
 echo linux-nosys   ; GOOS=linux     GOARCH=amd64 go build -tags sqlite3_nosys .
 echo windows-nosys ; GOOS=windows   GOARCH=amd64 go build -tags sqlite3_nosys .
-echo freebsd-nosys ; GOOS=freebsd   GOARCH=amd64 go build -tags sqlite3_nosys .
+echo freebsd-nosys ; GOOS=freebsd   GOARCH=amd64 go build -tags sqlite3_nosys .

.github/workflows/cross.yml

@@ -4,13 +4,11 @@ on:
   workflow_dispatch:
 
 jobs:
-  test:
+  build:
     runs-on: ubuntu-latest
 
     steps:
     - uses: actions/checkout@v4
-      with:
-        lfs: 'true'
 
     - name: Set up
       uses: actions/setup-go@v4

.github/workflows/repro.sh

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+if [[ "$OSTYPE" == "linux"* ]]; then
+  WASI_SDK="https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-20/wasi-sdk-20.0-linux.tar.gz"
+  BINARYEN="https://github.com/WebAssembly/binaryen/releases/download/version_116/binaryen-version_116-x86_64-linux.tar.gz"
+elif [[ "$OSTYPE" == "darwin"* ]]; then
+  WASI_SDK="https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-20/wasi-sdk-20.0-macos.tar.gz"
+  BINARYEN="https://github.com/WebAssembly/binaryen/releases/download/version_116/binaryen-version_116-x86_64-macos.tar.gz"
+elif [[ "$OSTYPE" == "msys" || "$OSTYPE" == "cygwin" ]]; then
+  WASI_SDK="https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-20/wasi-sdk-20.0.m-mingw.tar.gz"
+  BINARYEN="https://github.com/WebAssembly/binaryen/releases/download/version_116/binaryen-version_116-x86_64-windows.tar.gz"
+fi
+
+# Download tools
+mkdir -p tools
+[ -d "tools/wasi-sdk"* ]         || curl -#L "$WASI_SDK" | tar xzC tools &
+[ -d "tools/binaryen-version"* ] || curl -#L "$BINARYEN" | tar xzC tools &
+wait
+
+sqlite3/download.sh   # Download SQLite
+embed/build.sh        # Build WASM
+git diff --exit-code  # Check diffs

.github/workflows/repro.yml

@@ -0,0 +1,24 @@
+name: Reproducible build
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        os: [macos-latest, ubuntu-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        lfs: 'true'
+
+    - name: Set up
+      uses: actions/setup-go@v4
+      with:
+        go-version: stable
+
+    - name: Build
+      run: .github/workflows/repro.sh

README.md

@@ -8,38 +8,62 @@ Go module `github.com/ncruces/go-sqlite3` wraps a [WASM](https://webassembly.org
 and uses [wazero](https://wazero.io/) to provide `cgo`-free SQLite bindings.
 
 - [`github.com/ncruces/go-sqlite3`](https://pkg.go.dev/github.com/ncruces/go-sqlite3)
-  wraps the [C SQLite API](https://www.sqlite.org/cintro.html)
+  wraps the [C SQLite API](https://sqlite.org/cintro.html)
   ([example usage](https://pkg.go.dev/github.com/ncruces/go-sqlite3#example-package)).
 - [`github.com/ncruces/go-sqlite3/driver`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/driver)
   provides a [`database/sql`](https://pkg.go.dev/database/sql) driver
   ([example usage](https://pkg.go.dev/github.com/ncruces/go-sqlite3/driver#example-package)).
 - [`github.com/ncruces/go-sqlite3/embed`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/embed)
   embeds a build of SQLite into your application.
-- [`github.com/ncruces/go-sqlite3/ext/blob`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/ext/blob)
-  simplifies incremental BLOB I/O.
-- [`github.com/ncruces/go-sqlite3/ext/stats`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/ext/stats)
-  registers [statistics functions](https://www.oreilly.com/library/view/sql-in-a/9780596155322/ch04s02.html).
-- [`github.com/ncruces/go-sqlite3/ext/unicode`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/ext/unicode)
-  registers Unicode aware functions.
 - [`github.com/ncruces/go-sqlite3/vfs`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/vfs)
-  wraps the [C SQLite VFS API](https://www.sqlite.org/vfs.html) and provides a pure Go implementation.
+  wraps the [C SQLite VFS API](https://sqlite.org/vfs.html) and provides a pure Go implementation.
+- [`github.com/ncruces/go-sqlite3/gormlite`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/gormlite)
+  provides a [GORM](https://gorm.io) driver.
+
+### Loadable extensions
+
+- [`github.com/ncruces/go-sqlite3/ext/array`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/ext/blob)
+  provides the [`array`](https://sqlite.org/carray.html) table-valued function.
+- [`github.com/ncruces/go-sqlite3/ext/blob`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/ext/blob)
+  simplifies [incremental BLOB I/O](https://sqlite.org/c3ref/blob_open.html).
+- [`github.com/ncruces/go-sqlite3/ext/csv`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/ext/csv)
+  reads [comma-separated values](https://sqlite.org/csv.html).
+- [`github.com/ncruces/go-sqlite3/ext/lines`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/ext/lines)
+  reads files [line-by-line](https://github.com/asg017/sqlite-lines).
+- [`github.com/ncruces/go-sqlite3/ext/pivot`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/ext/pivot)
+  creates [pivot tables](https://github.com/jakethaw/pivot_vtab).
+- [`github.com/ncruces/go-sqlite3/ext/statement`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/ext/statement)
+  creates [table-valued functions with SQL](https://github.com/0x09/sqlite-statement-vtab).
+- [`github.com/ncruces/go-sqlite3/ext/stats`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/ext/stats)
+  provides [statistics functions](https://www.oreilly.com/library/view/sql-in-a/9780596155322/ch04s02.html).
+- [`github.com/ncruces/go-sqlite3/ext/unicode`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/ext/unicode)
+  provides [Unicode aware](https://sqlite.org/src/dir/ext/icu) functions.
 - [`github.com/ncruces/go-sqlite3/vfs/memdb`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/vfs/memdb)
   implements an in-memory VFS.
 - [`github.com/ncruces/go-sqlite3/vfs/readervfs`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/vfs/readervfs)
   implements a VFS for immutable databases.
-- [`github.com/ncruces/go-sqlite3/gormlite`](https://pkg.go.dev/github.com/ncruces/go-sqlite3/gormlite)
-  provides a [GORM](https://gorm.io) driver.
+
+### Advanced features
+
+- [x] [incremental BLOB I/O](https://sqlite.org/c3ref/blob_open.html)
+- [x] [nested transactions](https://sqlite.org/lang_savepoint.html)
+- [x] [custom functions](https://sqlite.org/c3ref/create_function.html)
+- [x] [virtual tables](https://sqlite.org/vtab.html)
+- [x] [custom VFSes](https://sqlite.org/vfs.html)
+- [x] [online backup](https://sqlite.org/backup.html)
+- [x] [JSON support](https://sqlite.org/json1.html)
+- [x] [Unicode support](https://sqlite.org/src/dir/ext/icu)
 
 ### Caveats
 
-This module replaces the SQLite [OS Interface](https://www.sqlite.org/vfs.html)
+This module replaces the SQLite [OS Interface](https://sqlite.org/vfs.html)
 (aka VFS) with a [pure Go](vfs/) implementation.
 This has benefits, but also comes with some drawbacks.
 
 #### Write-Ahead Logging
 
 Because WASM does not support shared memory,
-[WAL](https://www.sqlite.org/wal.html) support is [limited](https://www.sqlite.org/wal.html#noshm).
+[WAL](https://sqlite.org/wal.html) support is [limited](https://sqlite.org/wal.html#noshm).
 
 To work around this limitation, SQLite is [patched](sqlite3/locking_mode.patch)
 to always use `EXCLUSIVE` locking mode for WAL databases.
@@ -52,7 +76,7 @@ with WAL mode databases you should disable connection pooling by calling
 #### File Locking
 
 POSIX advisory locks, which SQLite uses on Unix, are
-[broken by design](https://www.sqlite.org/src/artifact/2e8b12?ln=1073-1161).
+[broken by design](https://sqlite.org/src/artifact/2e8b12?ln=1073-1161).
 
 On Linux, macOS and illumos, this module uses
 [OFD locks](https://www.gnu.org/software/libc/manual/html_node/Open-File-Description-Locks.html)
@@ -67,7 +91,7 @@ On Windows, this module uses `LockFile`, `LockFileEx`, and `UnlockFile`,
 like SQLite.
 
 On all other platforms, file locking is not supported, and you must use
-[`nolock=1`](https://www.sqlite.org/uri.html#urinolock)
+[`nolock=1`](https://sqlite.org/uri.html#urinolock)
 to open database files.
 To use the [`database/sql`](https://pkg.go.dev/database/sql) driver
 with `nolock=1` you must disable connection pooling by calling
@@ -81,22 +105,6 @@ on Linux, macOS, Windows and FreeBSD.
 Performance is tested by running
 [speedtest1](https://github.com/sqlite/sqlite/blob/master/test/speedtest1.c).
 
-### Roadmap
-
-- [ ] advanced SQLite features
-  - [x] custom functions
-  - [x] nested transactions
-  - [x] incremental BLOB I/O
-  - [x] online backup
-  - [x] JSON support
-  - [ ] virtual tables
-  - [ ] session extension
-- [ ] custom VFSes
-  - [x] custom VFS API
-  - [x] in-memory VFS
-  - [x] read-only VFS, wrapping an [`io.ReaderAt`](https://pkg.go.dev/io#ReaderAt)
-  - [ ] cloud-based VFS, based on [Cloud Backed SQLite](https://sqlite.org/cloudsqlite/doc/trunk/www/index.wiki)
-
 ### Alternatives
 
 - [`modernc.org/sqlite`](https://pkg.go.dev/modernc.org/sqlite)

backup.go

@@ -2,7 +2,7 @@ package sqlite3
 
 // Backup is an handle to an ongoing online backup operation.
 //
-// https://www.sqlite.org/c3ref/backup.html
+// https://sqlite.org/c3ref/backup.html
 type Backup struct {
 	c      *Conn
 	handle uint32
@@ -15,7 +15,7 @@ type Backup struct {
 // and blocks until the entire backup is complete.
 // Use [Conn.BackupInit] for incremental backup.
 //
-// https://www.sqlite.org/backup.html
+// https://sqlite.org/backup.html
 func (src *Conn) Backup(srcDB, dstURI string) error {
 	b, err := src.BackupInit(srcDB, dstURI)
 	if err != nil {
@@ -31,7 +31,7 @@ func (src *Conn) Backup(srcDB, dstURI string) error {
 // Restore opens the SQLite database file srcURI,
 // and blocks until the entire restore is complete.
 //
-// https://www.sqlite.org/backup.html
+// https://sqlite.org/backup.html
 func (dst *Conn) Restore(dstDB, srcURI string) error {
 	src, err := dst.openDB(srcURI, OPEN_READONLY|OPEN_URI)
 	if err != nil {
@@ -52,7 +52,7 @@ func (dst *Conn) Restore(dstDB, srcURI string) error {
 // then initializes a backup that copies the contents of srcDB on the src connection
 // to the "main" database in dstURI.
 //
-// https://www.sqlite.org/c3ref/backup_finish.html#sqlite3backupinit
+// https://sqlite.org/c3ref/backup_finish.html#sqlite3backupinit
 func (src *Conn) BackupInit(srcDB, dstURI string) (*Backup, error) {
 	dst, err := src.openDB(dstURI, OPEN_READWRITE|OPEN_CREATE|OPEN_URI)
 	if err != nil {
@@ -62,7 +62,7 @@ func (src *Conn) BackupInit(srcDB, dstURI string) (*Backup, error) {
 }
 
 func (c *Conn) backupInit(dst uint32, dstName string, src uint32, srcName string) (*Backup, error) {
-	defer c.arena.reset()
+	defer c.arena.mark()()
 	dstPtr := c.arena.string(dstName)
 	srcPtr := c.arena.string(srcName)
 
@@ -71,12 +71,12 @@ func (c *Conn) backupInit(dst uint32, dstName string, src uint32, srcName string
 		other = src
 	}
 
-	r := c.call(c.api.backupInit,
+	r := c.call("sqlite3_backup_init",
 		uint64(dst), uint64(dstPtr),
 		uint64(src), uint64(srcPtr))
 	if r == 0 {
 		defer c.closeDB(other)
-		r = c.call(c.api.errcode, uint64(dst))
+		r = c.call("sqlite3_errcode", uint64(dst))
 		return nil, c.sqlite.error(r, dst)
 	}
 
@@ -91,13 +91,13 @@ func (c *Conn) backupInit(dst uint32, dstName string, src uint32, srcName string
 //
 // It is safe to close a nil, zero or closed Backup.
 //
-// https://www.sqlite.org/c3ref/backup_finish.html#sqlite3backupfinish
+// https://sqlite.org/c3ref/backup_finish.html#sqlite3backupfinish
 func (b *Backup) Close() error {
 	if b == nil || b.handle == 0 {
 		return nil
 	}
 
-	r := b.c.call(b.c.api.backupFinish, uint64(b.handle))
+	r := b.c.call("sqlite3_backup_finish", uint64(b.handle))
 	b.c.closeDB(b.otherc)
 	b.handle = 0
 	return b.c.error(r)
@@ -106,9 +106,9 @@ func (b *Backup) Close() error {
 // Step copies up to nPage pages between the source and destination databases.
 // If nPage is negative, all remaining source pages are copied.
 //
-// https://www.sqlite.org/c3ref/backup_finish.html#sqlite3backupstep
+// https://sqlite.org/c3ref/backup_finish.html#sqlite3backupstep
 func (b *Backup) Step(nPage int) (done bool, err error) {
-	r := b.c.call(b.c.api.backupStep, uint64(b.handle), uint64(nPage))
+	r := b.c.call("sqlite3_backup_step", uint64(b.handle), uint64(nPage))
 	if r == _DONE {
 		return true, nil
 	}
@@ -118,17 +118,17 @@ func (b *Backup) Step(nPage int) (done bool, err error) {
 // Remaining returns the number of pages still to be backed up
 // at the conclusion of the most recent [Backup.Step].
 //
-// https://www.sqlite.org/c3ref/backup_finish.html#sqlite3backupremaining
+// https://sqlite.org/c3ref/backup_finish.html#sqlite3backupremaining
 func (b *Backup) Remaining() int {
-	r := b.c.call(b.c.api.backupRemaining, uint64(b.handle))
+	r := b.c.call("sqlite3_backup_remaining", uint64(b.handle))
 	return int(r)
 }
 
 // PageCount returns the total number of pages in the source database
 // at the conclusion of the most recent [Backup.Step].
 //
-// https://www.sqlite.org/c3ref/backup_finish.html#sqlite3backuppagecount
+// https://sqlite.org/c3ref/backup_finish.html#sqlite3backuppagecount
 func (b *Backup) PageCount() int {
-	r := b.c.call(b.c.api.backupPageCount, uint64(b.handle))
+	r := b.c.call("sqlite3_backup_pagecount", uint64(b.handle))
 	return int(r)
 }

blob.go

@@ -15,7 +15,7 @@ type ZeroBlob int64
 //
 // It implements [io.ReadWriteSeeker] for incremental BLOB I/O.
 //
-// https://www.sqlite.org/c3ref/blob.html
+// https://sqlite.org/c3ref/blob.html
 type Blob struct {
 	c      *Conn
 	bytes  int64
@@ -27,10 +27,10 @@ var _ io.ReadWriteSeeker = &Blob{}
 
 // OpenBlob opens a BLOB for incremental I/O.
 //
-// https://www.sqlite.org/c3ref/blob_open.html
+// https://sqlite.org/c3ref/blob_open.html
 func (c *Conn) OpenBlob(db, table, column string, row int64, write bool) (*Blob, error) {
 	c.checkInterrupt()
-	defer c.arena.reset()
+	defer c.arena.mark()()
 	blobPtr := c.arena.new(ptrlen)
 	dbPtr := c.arena.string(db)
 	tablePtr := c.arena.string(table)
@@ -41,7 +41,7 @@ func (c *Conn) OpenBlob(db, table, column string, row int64, write bool) (*Blob,
 		flags = 1
 	}
 
-	r := c.call(c.api.blobOpen, uint64(c.handle),
+	r := c.call("sqlite3_blob_open", uint64(c.handle),
 		uint64(dbPtr), uint64(tablePtr), uint64(columnPtr),
 		uint64(row), flags, uint64(blobPtr))
 
@@ -51,7 +51,7 @@ func (c *Conn) OpenBlob(db, table, column string, row int64, write bool) (*Blob,
 
 	blob := Blob{c: c}
 	blob.handle = util.ReadUint32(c.mod, blobPtr)
-	blob.bytes = int64(c.call(c.api.blobBytes, uint64(blob.handle)))
+	blob.bytes = int64(c.call("sqlite3_blob_bytes", uint64(blob.handle)))
 	return &blob, nil
 }
 
@@ -59,13 +59,13 @@ func (c *Conn) OpenBlob(db, table, column string, row int64, write bool) (*Blob,
 //
 // It is safe to close a nil, zero or closed Blob.
 //
-// https://www.sqlite.org/c3ref/blob_close.html
+// https://sqlite.org/c3ref/blob_close.html
 func (b *Blob) Close() error {
 	if b == nil || b.handle == 0 {
 		return nil
 	}
 
-	r := b.c.call(b.c.api.blobClose, uint64(b.handle))
+	r := b.c.call("sqlite3_blob_close", uint64(b.handle))
 
 	b.handle = 0
 	return b.c.error(r)
@@ -73,14 +73,14 @@ func (b *Blob) Close() error {
 
 // Size returns the size of the BLOB in bytes.
 //
-// https://www.sqlite.org/c3ref/blob_bytes.html
+// https://sqlite.org/c3ref/blob_bytes.html
 func (b *Blob) Size() int64 {
 	return b.bytes
 }
 
 // Read implements the [io.Reader] interface.
 //
-// https://www.sqlite.org/c3ref/blob_read.html
+// https://sqlite.org/c3ref/blob_read.html
 func (b *Blob) Read(p []byte) (n int, err error) {
 	if b.offset >= b.bytes {
 		return 0, io.EOF
@@ -92,10 +92,10 @@ func (b *Blob) Read(p []byte) (n int, err error) {
 		want = avail
 	}
 
-	defer b.c.arena.reset()
+	defer b.c.arena.mark()()
 	ptr := b.c.arena.new(uint64(want))
 
-	r := b.c.call(b.c.api.blobRead, uint64(b.handle),
+	r := b.c.call("sqlite3_blob_read", uint64(b.handle),
 		uint64(ptr), uint64(want), uint64(b.offset))
 	err = b.c.error(r)
 	if err != nil {
@@ -112,7 +112,7 @@ func (b *Blob) Read(p []byte) (n int, err error) {
 
 // WriteTo implements the [io.WriterTo] interface.
 //
-// https://www.sqlite.org/c3ref/blob_read.html
+// https://sqlite.org/c3ref/blob_read.html
 func (b *Blob) WriteTo(w io.Writer) (n int64, err error) {
 	if b.offset >= b.bytes {
 		return 0, nil
@@ -124,11 +124,11 @@ func (b *Blob) WriteTo(w io.Writer) (n int64, err error) {
 		want = avail
 	}
 
-	ptr := b.c.new(uint64(want))
-	defer b.c.free(ptr)
+	defer b.c.arena.mark()()
+	ptr := b.c.arena.new(uint64(want))
 
 	for want > 0 {
-		r := b.c.call(b.c.api.blobRead, uint64(b.handle),
+		r := b.c.call("sqlite3_blob_read", uint64(b.handle),
 			uint64(ptr), uint64(want), uint64(b.offset))
 		err = b.c.error(r)
 		if err != nil {
@@ -156,12 +156,12 @@ func (b *Blob) WriteTo(w io.Writer) (n int64, err error) {
 
 // Write implements the [io.Writer] interface.
 //
-// https://www.sqlite.org/c3ref/blob_write.html
+// https://sqlite.org/c3ref/blob_write.html
 func (b *Blob) Write(p []byte) (n int, err error) {
-	defer b.c.arena.reset()
+	defer b.c.arena.mark()()
 	ptr := b.c.arena.bytes(p)
 
-	r := b.c.call(b.c.api.blobWrite, uint64(b.handle),
+	r := b.c.call("sqlite3_blob_write", uint64(b.handle),
 		uint64(ptr), uint64(len(p)), uint64(b.offset))
 	err = b.c.error(r)
 	if err != nil {
@@ -173,7 +173,7 @@ func (b *Blob) Write(p []byte) (n int, err error) {
 
 // ReadFrom implements the [io.ReaderFrom] interface.
 //
-// https://www.sqlite.org/c3ref/blob_write.html
+// https://sqlite.org/c3ref/blob_write.html
 func (b *Blob) ReadFrom(r io.Reader) (n int64, err error) {
 	want := int64(1024 * 1024)
 	avail := b.bytes - b.offset
@@ -187,14 +187,14 @@ func (b *Blob) ReadFrom(r io.Reader) (n int64, err error) {
 		want = 1
 	}
 
-	ptr := b.c.new(uint64(want))
-	defer b.c.free(ptr)
+	defer b.c.arena.mark()()
+	ptr := b.c.arena.new(uint64(want))
 
 	for {
 		mem := util.View(b.c.mod, ptr, uint64(want))
 		m, err := r.Read(mem[:want])
 		if m > 0 {
-			r := b.c.call(b.c.api.blobWrite, uint64(b.handle),
+			r := b.c.call("sqlite3_blob_write", uint64(b.handle),
 				uint64(ptr), uint64(m), uint64(b.offset))
 			err := b.c.error(r)
 			if err != nil {
@@ -241,10 +241,10 @@ func (b *Blob) Seek(offset int64, whence int) (int64, error) {
 
 // Reopen moves a BLOB handle to a new row of the same database table.
 //
-// https://www.sqlite.org/c3ref/blob_reopen.html
+// https://sqlite.org/c3ref/blob_reopen.html
 func (b *Blob) Reopen(row int64) error {
-	err := b.c.error(b.c.call(b.c.api.blobReopen, uint64(b.handle), uint64(row)))
-	b.bytes = int64(b.c.call(b.c.api.blobBytes, uint64(b.handle)))
+	err := b.c.error(b.c.call("sqlite3_blob_reopen", uint64(b.handle), uint64(row)))
+	b.bytes = int64(b.c.call("sqlite3_blob_bytes", uint64(b.handle)))
 	b.offset = 0
 	return err
 }

conn.go

@@ -5,7 +5,6 @@ import (
 	"errors"
 	"fmt"
 	"net/url"
-	"runtime"
 	"strings"
 
 	"github.com/ncruces/go-sqlite3/internal/util"
@@ -15,7 +14,7 @@ import (
 // Conn is a database connection handle.
 // A Conn is not safe for concurrent use by multiple goroutines.
 //
-// https://www.sqlite.org/c3ref/sqlite3.html
+// https://sqlite.org/c3ref/sqlite3.html
 type Conn struct {
 	*sqlite
 
@@ -38,7 +37,7 @@ func Open(filename string) (*Conn, error) {
 //
 //	sqlite3.Open("file:demo.db?_pragma=busy_timeout(10000)")
 //
-// https://www.sqlite.org/c3ref/open.html
+// https://sqlite.org/c3ref/open.html
 func OpenFlags(filename string, flags OpenFlag) (*Conn, error) {
 	if flags&(OPEN_READONLY|OPEN_READWRITE|OPEN_CREATE) == 0 {
 		flags |= OPEN_READWRITE | OPEN_CREATE
@@ -56,8 +55,6 @@ func newConn(filename string, flags OpenFlag) (conn *Conn, err error) {
 	defer func() {
 		if conn == nil {
 			sqlite.close()
-		} else {
-			runtime.SetFinalizer(conn, util.Finalizer[Conn](3))
 		}
 	}()
 
@@ -72,12 +69,12 @@ func newConn(filename string, flags OpenFlag) (conn *Conn, err error) {
 }
 
 func (c *Conn) openDB(filename string, flags OpenFlag) (uint32, error) {
-	defer c.arena.reset()
+	defer c.arena.mark()()
 	connPtr := c.arena.new(ptrlen)
 	namePtr := c.arena.string(filename)
 
 	flags |= OPEN_EXRESCODE
-	r := c.call(c.api.open, uint64(namePtr), uint64(connPtr), uint64(flags), 0)
+	r := c.call("sqlite3_open_v2", uint64(namePtr), uint64(connPtr), uint64(flags), 0)
 
 	handle := util.ReadUint32(c.mod, connPtr)
 	if err := c.sqlite.error(r, handle); err != nil {
@@ -92,13 +89,12 @@ func (c *Conn) openDB(filename string, flags OpenFlag) (uint32, error) {
 			for _, p := range query["_pragma"] {
 				pragmas.WriteString(`PRAGMA `)
 				pragmas.WriteString(p)
-				pragmas.WriteByte(';')
+				pragmas.WriteString(`;`)
 			}
 		}
 
-		c.arena.reset()
 		pragmaPtr := c.arena.string(pragmas.String())
-		r := c.call(c.api.exec, uint64(handle), uint64(pragmaPtr), 0, 0, 0)
+		r := c.call("sqlite3_exec", uint64(handle), uint64(pragmaPtr), 0, 0, 0)
 		if err := c.sqlite.error(r, handle, pragmas.String()); err != nil {
 			if errors.Is(err, ERROR) {
 				err = fmt.Errorf("sqlite3: invalid _pragma: %w", err)
@@ -112,7 +108,7 @@ func (c *Conn) openDB(filename string, flags OpenFlag) (uint32, error) {
 }
 
 func (c *Conn) closeDB(handle uint32) {
-	r := c.call(c.api.closeZombie, uint64(handle))
+	r := c.call("sqlite3_close_v2", uint64(handle))
 	if err := c.sqlite.error(r, handle); err != nil {
 		panic(err)
 	}
@@ -126,7 +122,7 @@ func (c *Conn) closeDB(handle uint32) {
 //
 // It is safe to close a nil, zero or closed Conn.
 //
-// https://www.sqlite.org/c3ref/close.html
+// https://sqlite.org/c3ref/close.html
 func (c *Conn) Close() error {
 	if c == nil || c.handle == 0 {
 		return nil
@@ -135,27 +131,26 @@ func (c *Conn) Close() error {
 	c.pending.Close()
 	c.pending = nil
 
-	r := c.call(c.api.close, uint64(c.handle))
+	r := c.call("sqlite3_close", uint64(c.handle))
 	if err := c.error(r); err != nil {
 		return err
 	}
 
 	c.handle = 0
-	runtime.SetFinalizer(c, nil)
 	return c.close()
 }
 
 // Exec is a convenience function that allows an application to run
 // multiple statements of SQL without having to use a lot of code.
 //
-// https://www.sqlite.org/c3ref/exec.html
+// https://sqlite.org/c3ref/exec.html
 func (c *Conn) Exec(sql string) error {
 	c.checkInterrupt()
-	defer c.arena.reset()
+	defer c.arena.mark()()
 	sqlPtr := c.arena.string(sql)
 
-	r := c.call(c.api.exec, uint64(c.handle), uint64(sqlPtr), 0, 0, 0)
-	return c.error(r)
+	r := c.call("sqlite3_exec", uint64(c.handle), uint64(sqlPtr), 0, 0, 0)
+	return c.error(r, sql)
 }
 
 // Prepare calls [Conn.PrepareFlags] with no flags.
@@ -168,25 +163,26 @@ func (c *Conn) Prepare(sql string) (stmt *Stmt, tail string, err error) {
 // If the input text contains no SQL (if the input is an empty string or a comment),
 // both stmt and err will be nil.
 //
-// https://www.sqlite.org/c3ref/prepare.html
+// https://sqlite.org/c3ref/prepare.html
 func (c *Conn) PrepareFlags(sql string, flags PrepareFlag) (stmt *Stmt, tail string, err error) {
-	if emptyStatement(sql) {
-		return nil, "", nil
+	if len(sql) > _MAX_LENGTH {
+		return nil, "", TOOBIG
 	}
 
-	defer c.arena.reset()
+	defer c.arena.mark()()
 	stmtPtr := c.arena.new(ptrlen)
 	tailPtr := c.arena.new(ptrlen)
 	sqlPtr := c.arena.string(sql)
 
-	r := c.call(c.api.prepare, uint64(c.handle),
+	r := c.call("sqlite3_prepare_v3", uint64(c.handle),
 		uint64(sqlPtr), uint64(len(sql)+1), uint64(flags),
 		uint64(stmtPtr), uint64(tailPtr))
 
 	stmt = &Stmt{c: c}
 	stmt.handle = util.ReadUint32(c.mod, stmtPtr)
-	i := util.ReadUint32(c.mod, tailPtr)
-	tail = sql[i-sqlPtr:]
+	if sql := sql[util.ReadUint32(c.mod, tailPtr)-sqlPtr:]; sql != "" {
+		tail = sql
+	}
 
 	if err := c.error(r, sql); err != nil {
 		return nil, "", err
@@ -194,23 +190,23 @@ func (c *Conn) PrepareFlags(sql string, flags PrepareFlag) (stmt *Stmt, tail str
 	if stmt.handle == 0 {
 		return nil, "", nil
 	}
-	return
+	return stmt, tail, nil
 }
 
 // GetAutocommit tests the connection for auto-commit mode.
 //
-// https://www.sqlite.org/c3ref/get_autocommit.html
+// https://sqlite.org/c3ref/get_autocommit.html
 func (c *Conn) GetAutocommit() bool {
-	r := c.call(c.api.autocommit, uint64(c.handle))
+	r := c.call("sqlite3_get_autocommit", uint64(c.handle))
 	return r != 0
 }
 
 // LastInsertRowID returns the rowid of the most recent successful INSERT
 // on the database connection.
 //
-// https://www.sqlite.org/c3ref/last_insert_rowid.html
+// https://sqlite.org/c3ref/last_insert_rowid.html
 func (c *Conn) LastInsertRowID() int64 {
-	r := c.call(c.api.lastRowid, uint64(c.handle))
+	r := c.call("sqlite3_last_insert_rowid", uint64(c.handle))
 	return int64(r)
 }
 
@@ -218,9 +214,9 @@ func (c *Conn) LastInsertRowID() int64 {
 // by the most recently completed INSERT, UPDATE or DELETE statement
 // on the database connection.
 //
-// https://www.sqlite.org/c3ref/changes.html
+// https://sqlite.org/c3ref/changes.html
 func (c *Conn) Changes() int64 {
-	r := c.call(c.api.changes, uint64(c.handle))
+	r := c.call("sqlite3_changes64", uint64(c.handle))
 	return int64(r)
 }
 
@@ -237,7 +233,7 @@ func (c *Conn) Changes() int64 {
 //
 // SetInterrupt returns the old context assigned to the connection.
 //
-// https://www.sqlite.org/c3ref/interrupt.html
+// https://sqlite.org/c3ref/interrupt.html
 func (c *Conn) SetInterrupt(ctx context.Context) (old context.Context) {
 	// Is it the same context?
 	if ctx == c.interrupt {
@@ -256,16 +252,16 @@ func (c *Conn) SetInterrupt(ctx context.Context) (old context.Context) {
 	c.interrupt = ctx
 	// Remove the handler if the context can't be canceled.
 	if ctx == nil || ctx.Done() == nil {
-		c.call(c.api.progressHandler, uint64(c.handle), 0)
+		c.call("sqlite3_progress_handler_go", uint64(c.handle), 0)
 		return old
 	}
 
 	c.pending.Step()
-	c.call(c.api.progressHandler, uint64(c.handle), 100)
+	c.call("sqlite3_progress_handler_go", uint64(c.handle), 100)
 	return old
 }
 
-func callbackProgress(ctx context.Context, mod api.Module, _ uint32) uint32 {
+func progressCallback(ctx context.Context, mod api.Module, _ uint32) uint32 {
 	if c, ok := ctx.Value(connKey{}).(*Conn); ok {
 		if c.interrupt != nil && c.interrupt.Err() != nil {
 			return 1
@@ -276,13 +272,13 @@ func callbackProgress(ctx context.Context, mod api.Module, _ uint32) uint32 {
 
 func (c *Conn) checkInterrupt() {
 	if c.interrupt != nil && c.interrupt.Err() != nil {
-		c.call(c.api.interrupt, uint64(c.handle))
+		c.call("sqlite3_interrupt", uint64(c.handle))
 	}
 }
 
 // Pragma executes a PRAGMA statement and returns any results.
 //
-// https://www.sqlite.org/pragma.html
+// https://sqlite.org/pragma.html
 func (c *Conn) Pragma(str string) ([]string, error) {
 	stmt, _, err := c.Prepare(`PRAGMA ` + str)
 	if err != nil {
@@ -305,7 +301,7 @@ func (c *Conn) error(rc uint64, sql ...string) error {
 //
 // It can be used to access SQLite features like [online backup].
 //
-// [online backup]: https://www.sqlite.org/backup.html
+// [online backup]: https://sqlite.org/backup.html
 type DriverConn interface {
 	Raw() *Conn
 }

const.go

@@ -9,8 +9,9 @@ const (
 
 	_UTF8 = 1
 
-	_MAX_STRING = 512 // Used for short strings: names, error messages…
-
+	_MAX_NAME            = 512 // Used for short strings: names, error messages…
+	_MAX_LENGTH          = 1e9
+	_MAX_SQL_LENGTH      = 1e9
 	_MAX_ALLOCATION_SIZE = 0x7ffffeff
 
 	ptrlen = 4
@@ -18,7 +19,7 @@ const (
 
 // ErrorCode is a result code that [Error.Code] might return.
 //
-// https://www.sqlite.org/rescode.html
+// https://sqlite.org/rescode.html
 type ErrorCode uint8
 
 const (
@@ -54,7 +55,7 @@ const (
 
 // ExtendedErrorCode is a result code that [Error.ExtendedCode] might return.
 //
-// https://www.sqlite.org/rescode.html
+// https://sqlite.org/rescode.html
 type (
 	ExtendedErrorCode uint16
 	xErrorCode        = ExtendedErrorCode
@@ -140,7 +141,7 @@ const (
 
 // OpenFlag is a flag for the [OpenFlags] function.
 //
-// https://www.sqlite.org/c3ref/c_open_autoproxy.html
+// https://sqlite.org/c3ref/c_open_autoproxy.html
 type OpenFlag uint32
 
 const (
@@ -159,7 +160,7 @@ const (
 
 // PrepareFlag is a flag that can be passed to [Conn.PrepareFlags].
 //
-// https://www.sqlite.org/c3ref/c_prepare_normalize.html
+// https://sqlite.org/c3ref/c_prepare_normalize.html
 type PrepareFlag uint32
 
 const (
@@ -168,9 +169,10 @@ const (
 	PREPARE_NO_VTAB    PrepareFlag = 0x04
 )
 
-// FunctionFlag is a flag that can be passed to [Conn.PrepareFlags].
+// FunctionFlag is a flag that can be passed to
+// [Conn.CreateFunction] and [Conn.CreateWindowFunction].
 //
-// https://www.sqlite.org/c3ref/c_deterministic.html
+// https://sqlite.org/c3ref/c_deterministic.html
 type FunctionFlag uint32
 
 const (
@@ -180,9 +182,26 @@ const (
 	INNOCUOUS     FunctionFlag = 0x000200000
 )
 
+// StmtStatus name counter values associated with the [Stmt.Status] method.
+//
+// https://sqlite.org/c3ref/c_stmtstatus_counter.html
+type StmtStatus uint32
+
+const (
+	STMTSTATUS_FULLSCAN_STEP StmtStatus = 1
+	STMTSTATUS_SORT          StmtStatus = 2
+	STMTSTATUS_AUTOINDEX     StmtStatus = 3
+	STMTSTATUS_VM_STEP       StmtStatus = 4
+	STMTSTATUS_REPREPARE     StmtStatus = 5
+	STMTSTATUS_RUN           StmtStatus = 6
+	STMTSTATUS_FILTER_MISS   StmtStatus = 7
+	STMTSTATUS_FILTER_HIT    StmtStatus = 8
+	STMTSTATUS_MEMUSED       StmtStatus = 99
+)
+
 // Datatype is a fundamental datatype of SQLite.
 //
-// https://www.sqlite.org/c3ref/c_blob.html
+// https://sqlite.org/c3ref/c_blob.html
 type Datatype uint32
 
 const (

context.go

@@ -12,7 +12,7 @@ import (
 // Context is the context in which an SQL function executes.
 // An SQLite [Context] is in no way related to a Go [context.Context].
 //
-// https://www.sqlite.org/c3ref/context.html
+// https://sqlite.org/c3ref/context.html
 type Context struct {
 	c      *Conn
 	handle uint32
@@ -29,17 +29,17 @@ func (ctx Context) Conn() *Conn {
 
 // SetAuxData saves metadata for argument n of the function.
 //
-// https://www.sqlite.org/c3ref/get_auxdata.html
+// https://sqlite.org/c3ref/get_auxdata.html
 func (ctx Context) SetAuxData(n int, data any) {
 	ptr := util.AddHandle(ctx.c.ctx, data)
-	ctx.c.call(ctx.c.api.setAuxData, uint64(ctx.handle), uint64(n), uint64(ptr))
+	ctx.c.call("sqlite3_set_auxdata_go", uint64(ctx.handle), uint64(n), uint64(ptr))
 }
 
 // GetAuxData returns metadata for argument n of the function.
 //
-// https://www.sqlite.org/c3ref/get_auxdata.html
+// https://sqlite.org/c3ref/get_auxdata.html
 func (ctx Context) GetAuxData(n int) any {
-	ptr := uint32(ctx.c.call(ctx.c.api.getAuxData, uint64(ctx.handle), uint64(n)))
+	ptr := uint32(ctx.c.call("sqlite3_get_auxdata", uint64(ctx.handle), uint64(n)))
 	return util.GetHandle(ctx.c.ctx, ptr)
 }
 
@@ -47,7 +47,7 @@ func (ctx Context) GetAuxData(n int) any {
 // SQLite does not have a separate boolean storage class.
 // Instead, boolean values are stored as integers 0 (false) and 1 (true).
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultBool(value bool) {
 	var i int64
 	if value {
@@ -58,67 +58,77 @@ func (ctx Context) ResultBool(value bool) {
 
 // ResultInt sets the result of the function to an int.
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultInt(value int) {
 	ctx.ResultInt64(int64(value))
 }
 
 // ResultInt64 sets the result of the function to an int64.
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultInt64(value int64) {
-	ctx.c.call(ctx.c.api.resultInteger,
+	ctx.c.call("sqlite3_result_int64",
 		uint64(ctx.handle), uint64(value))
 }
 
 // ResultFloat sets the result of the function to a float64.
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultFloat(value float64) {
-	ctx.c.call(ctx.c.api.resultFloat,
+	ctx.c.call("sqlite3_result_double",
 		uint64(ctx.handle), math.Float64bits(value))
 }
 
 // ResultText sets the result of the function to a string.
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultText(value string) {
 	ptr := ctx.c.newString(value)
-	ctx.c.call(ctx.c.api.resultText,
+	ctx.c.call("sqlite3_result_text64",
 		uint64(ctx.handle), uint64(ptr), uint64(len(value)),
-		uint64(ctx.c.api.destructor), _UTF8)
+		uint64(ctx.c.freer), _UTF8)
+}
+
+// ResultRawText sets the text result of the function to a []byte.
+//
+// https://sqlite.org/c3ref/result_blob.html
+func (ctx Context) ResultRawText(value []byte) {
+	ptr := ctx.c.newBytes(value)
+	ctx.c.call("sqlite3_result_text64",
+		uint64(ctx.handle), uint64(ptr), uint64(len(value)),
+		uint64(ctx.c.freer), _UTF8)
 }
 
 // ResultBlob sets the result of the function to a []byte.
 // Returning a nil slice is the same as calling [Context.ResultNull].
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultBlob(value []byte) {
 	ptr := ctx.c.newBytes(value)
-	ctx.c.call(ctx.c.api.resultBlob,
+	ctx.c.call("sqlite3_result_blob64",
 		uint64(ctx.handle), uint64(ptr), uint64(len(value)),
-		uint64(ctx.c.api.destructor))
+		uint64(ctx.c.freer))
 }
 
-// BindZeroBlob sets the result of the function to a zero-filled, length n BLOB.
+// ResultZeroBlob sets the result of the function to a zero-filled, length n BLOB.
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultZeroBlob(n int64) {
-	ctx.c.call(ctx.c.api.resultZeroBlob,
+	ctx.c.call("sqlite3_result_zeroblob64",
 		uint64(ctx.handle), uint64(n))
 }
 
 // ResultNull sets the result of the function to NULL.
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultNull() {
-	ctx.c.call(ctx.c.api.resultNull,
+	ctx.c.call("sqlite3_result_null",
 		uint64(ctx.handle))
 }
 
 // ResultTime sets the result of the function to a [time.Time].
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultTime(value time.Time, format TimeFormat) {
 	if format == TimeFormatDefault {
 		ctx.resultRFC3339Nano(value)
@@ -143,77 +153,68 @@ func (ctx Context) resultRFC3339Nano(value time.Time) {
 	buf := util.View(ctx.c.mod, ptr, maxlen)
 	buf = value.AppendFormat(buf[:0], time.RFC3339Nano)
 
-	ctx.c.call(ctx.c.api.resultText,
+	ctx.c.call("sqlite3_result_text64",
 		uint64(ctx.handle), uint64(ptr), uint64(len(buf)),
-		uint64(ctx.c.api.destructor), _UTF8)
+		uint64(ctx.c.freer), _UTF8)
 }
 
 // ResultPointer sets the result of the function to NULL, just like [Context.ResultNull],
 // except that it also associates ptr with that NULL value such that it can be retrieved
 // within an application-defined SQL function using [Value.Pointer].
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultPointer(ptr any) {
 	valPtr := util.AddHandle(ctx.c.ctx, ptr)
-	ctx.c.call(ctx.c.api.resultPointer, uint64(valPtr))
+	ctx.c.call("sqlite3_result_pointer_go", uint64(valPtr))
 }
 
 // ResultJSON sets the result of the function to the JSON encoding of value.
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultJSON(value any) {
 	data, err := json.Marshal(value)
 	if err != nil {
 		ctx.ResultError(err)
+		return
 	}
-	ptr := ctx.c.newBytes(data)
-	ctx.c.call(ctx.c.api.resultText,
-		uint64(ctx.handle), uint64(ptr), uint64(len(data)),
-		uint64(ctx.c.api.destructor))
+	ctx.ResultRawText(data)
 }
 
-// ResultValue sets the result of the function a copy of [Value].
+// ResultValue sets the result of the function to a copy of [Value].
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultValue(value Value) {
 	if value.sqlite != ctx.c.sqlite {
 		ctx.ResultError(MISUSE)
+		return
 	}
-	ctx.c.call(ctx.c.api.resultValue,
+	ctx.c.call("sqlite3_result_value",
 		uint64(ctx.handle), uint64(value.handle))
 }
 
 // ResultError sets the result of the function an error.
 //
-// https://www.sqlite.org/c3ref/result_blob.html
+// https://sqlite.org/c3ref/result_blob.html
 func (ctx Context) ResultError(err error) {
 	if errors.Is(err, NOMEM) {
-		ctx.c.call(ctx.c.api.resultErrorMem, uint64(ctx.handle))
+		ctx.c.call("sqlite3_result_error_nomem", uint64(ctx.handle))
 		return
 	}
 
 	if errors.Is(err, TOOBIG) {
-		ctx.c.call(ctx.c.api.resultErrorBig, uint64(ctx.handle))
+		ctx.c.call("sqlite3_result_error_toobig", uint64(ctx.handle))
 		return
 	}
 
-	str := err.Error()
-	ptr := ctx.c.newString(str)
-	ctx.c.call(ctx.c.api.resultError,
-		uint64(ctx.handle), uint64(ptr), uint64(len(str)))
-	ctx.c.free(ptr)
-
-	var code uint64
-	var ecode ErrorCode
-	var xcode xErrorCode
-	switch {
-	case errors.As(err, &xcode):
-		code = uint64(xcode)
-	case errors.As(err, &ecode):
-		code = uint64(ecode)
+	msg, code := errorCode(err, _OK)
+	if msg != "" {
+		defer ctx.c.arena.mark()()
+		ptr := ctx.c.arena.string(msg)
+		ctx.c.call("sqlite3_result_error",
+			uint64(ctx.handle), uint64(ptr), uint64(len(msg)))
 	}
-	if code != 0 {
-		ctx.c.call(ctx.c.api.resultErrorCode,
-			uint64(ctx.handle), code)
+	if code != _OK {
+		ctx.c.call("sqlite3_result_error_code",
+			uint64(ctx.handle), uint64(code))
 	}
 }

driver/driver.go

@@ -12,6 +12,18 @@
 //
 //	sql.Open("sqlite3", "file:demo.db?_txlock=immediate")
 //
+// Possible values are: "deferred", "immediate", "exclusive".
+// A [read-only] transaction is always "deferred", regardless of "_txlock".
+//
+// The time encoding/decoding format can be specified using "_timefmt":
+//
+//	sql.Open("sqlite3", "file:demo.db?_timefmt=sqlite")
+//
+// Possible values are: "auto" (the default), "sqlite", "rfc3339";
+// "auto" encodes as RFC 3339 and decodes any [format] supported by SQLite;
+// "sqlite" encodes as SQLite and decodes any [format] supported by SQLite;
+// "rfc3339" encodes and decodes RFC 3339 only.
+//
 // [PRAGMA] statements can be specified using "_pragma":
 //
 //	sql.Open("sqlite3", "file:demo.db?_pragma=busy_timeout(10000)")
@@ -21,16 +33,17 @@
 // Order matters:
 // busy timeout and locking mode should be the first PRAGMAs set, in that order.
 //
-// [URI]: https://www.sqlite.org/uri.html
-// [PRAGMA]: https://www.sqlite.org/pragma.html
-// [TRANSACTION]: https://www.sqlite.org/lang_transaction.html#deferred_immediate_and_exclusive_transactions
+// [URI]: https://sqlite.org/uri.html
+// [PRAGMA]: https://sqlite.org/pragma.html
+// [format]: https://sqlite.org/lang_datefunc.html#time_values
+// [TRANSACTION]: https://sqlite.org/lang_transaction.html#deferred_immediate_and_exclusive_transactions
+// [read-only]: https://pkg.go.dev/database/sql#TxOptions
 package driver
 
 import (
 	"context"
 	"database/sql"
 	"database/sql/driver"
-	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
@@ -44,7 +57,7 @@ import (
 
 // This variable can be replaced with -ldflags:
 //
-//	go build -ldflags="-X github.com/ncruces/go-sqlite3.driverName=sqlite"
+//	go build -ldflags="-X github.com/ncruces/go-sqlite3/driver.driverName=sqlite"
 var driverName = "sqlite3"
 
 func init() {
@@ -82,23 +95,52 @@ func (sqlite) OpenConnector(name string) (driver.Connector, error) {
 
 func newConnector(name string, init func(*sqlite3.Conn) error) (*connector, error) {
 	c := connector{name: name, init: init}
+
+	var txlock, timefmt string
 	if strings.HasPrefix(name, "file:") {
 		if _, after, ok := strings.Cut(name, "?"); ok {
 			query, err := url.ParseQuery(after)
 			if err != nil {
 				return nil, err
 			}
-			c.txlock = query.Get("_txlock")
-			c.pragmas = len(query["_pragma"]) > 0
+			txlock = query.Get("_txlock")
+			timefmt = query.Get("_timefmt")
+			c.pragmas = query.Has("_pragma")
 		}
 	}
+
+	switch txlock {
+	case "":
+		c.txBegin = "BEGIN"
+	case "deferred", "immediate", "exclusive":
+		c.txBegin = "BEGIN " + txlock
+	default:
+		return nil, fmt.Errorf("sqlite3: invalid _txlock: %s", txlock)
+	}
+
+	switch timefmt {
+	case "":
+		c.tmRead = sqlite3.TimeFormatAuto
+		c.tmWrite = sqlite3.TimeFormatDefault
+	case "sqlite":
+		c.tmRead = sqlite3.TimeFormatAuto
+		c.tmWrite = sqlite3.TimeFormat3
+	case "rfc3339":
+		c.tmRead = sqlite3.TimeFormatDefault
+		c.tmWrite = sqlite3.TimeFormatDefault
+	default:
+		c.tmRead = sqlite3.TimeFormat(timefmt)
+		c.tmWrite = sqlite3.TimeFormat(timefmt)
+	}
 	return &c, nil
 }
 
 type connector struct {
 	init    func(*sqlite3.Conn) error
 	name    string
-	txlock  string
+	txBegin string
+	tmRead  sqlite3.TimeFormat
+	tmWrite sqlite3.TimeFormat
 	pragmas bool
 }
 
@@ -107,7 +149,12 @@ func (n *connector) Driver() driver.Driver {
 }
 
 func (n *connector) Connect(ctx context.Context) (_ driver.Conn, err error) {
-	var c conn
+	c := &conn{
+		txBegin: n.txBegin,
+		tmRead:  n.tmRead,
+		tmWrite: n.tmWrite,
+	}
+
 	c.Conn, err = sqlite3.Open(n.name)
 	if err != nil {
 		return nil, err
@@ -121,14 +168,6 @@ func (n *connector) Connect(ctx context.Context) (_ driver.Conn, err error) {
 	old := c.Conn.SetInterrupt(ctx)
 	defer c.Conn.SetInterrupt(old)
 
-	switch n.txlock {
-	case "":
-		c.txBegin = "BEGIN"
-	case "deferred", "immediate", "exclusive":
-		c.txBegin = "BEGIN " + n.txlock
-	default:
-		return nil, fmt.Errorf("sqlite3: invalid _txlock: %s", n.txlock)
-	}
 	if !n.pragmas {
 		err = c.Conn.Exec(`PRAGMA busy_timeout=60000`)
 		if err != nil {
@@ -156,7 +195,7 @@ func (n *connector) Connect(ctx context.Context) (_ driver.Conn, err error) {
 			return nil, err
 		}
 	}
-	return &c, nil
+	return c, nil
 }
 
 type conn struct {
@@ -164,6 +203,8 @@ type conn struct {
 	txBegin    string
 	txCommit   string
 	txRollback string
+	tmRead     sqlite3.TimeFormat
+	tmWrite    sqlite3.TimeFormat
 	readOnly   byte
 }
 
@@ -248,19 +289,10 @@ func (c *conn) PrepareContext(ctx context.Context, query string) (driver.Stmt, e
 		return nil, err
 	}
 	if tail != "" {
-		// Check if the tail contains any SQL.
-		st, _, err := c.Conn.Prepare(tail)
-		if err != nil {
-			s.Close()
-			return nil, err
-		}
-		if st != nil {
-			s.Close()
-			st.Close()
-			return nil, util.TailErr
-		}
+		s.Close()
+		return nil, util.TailErr
 	}
-	return &stmt{s, c.Conn}, nil
+	return &stmt{Stmt: s, tmRead: c.tmRead, tmWrite: c.tmWrite}, nil
 }
 
 func (c *conn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
@@ -271,7 +303,7 @@ func (c *conn) ExecContext(ctx context.Context, query string, args []driver.Name
 
 	if savept, ok := ctx.(*saveptCtx); ok {
 		// Called from driver.Savepoint.
-		savept.Savepoint = c.Savepoint()
+		savept.Savepoint = c.Conn.Savepoint()
 		return resultRowsAffected(0), nil
 	}
 
@@ -291,8 +323,9 @@ func (*conn) CheckNamedValue(arg *driver.NamedValue) error {
 }
 
 type stmt struct {
-	Stmt *sqlite3.Stmt
-	Conn *sqlite3.Conn
+	*sqlite3.Stmt
+	tmWrite sqlite3.TimeFormat
+	tmRead  sqlite3.TimeFormat
 }
 
 var (
@@ -302,10 +335,6 @@ var (
 	_ driver.NamedValueChecker = &stmt{}
 )
 
-func (s *stmt) Close() error {
-	return s.Stmt.Close()
-}
-
 func (s *stmt) NumInput() int {
 	n := s.Stmt.BindCount()
 	for i := 1; i <= n; i++ {
@@ -332,15 +361,15 @@ func (s *stmt) ExecContext(ctx context.Context, args []driver.NamedValue) (drive
 		return nil, err
 	}
 
-	old := s.Conn.SetInterrupt(ctx)
-	defer s.Conn.SetInterrupt(old)
+	old := s.Stmt.Conn().SetInterrupt(ctx)
+	defer s.Stmt.Conn().SetInterrupt(old)
 
 	err = s.Stmt.Exec()
 	if err != nil {
 		return nil, err
 	}
 
-	return newResult(s.Conn), nil
+	return newResult(s.Stmt.Conn()), nil
 }
 
 func (s *stmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driver.Rows, error) {
@@ -348,7 +377,7 @@ func (s *stmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driv
 	if err != nil {
 		return nil, err
 	}
-	return &rows{ctx, s.Stmt, s.Conn}, nil
+	return &rows{s, ctx}, nil
 }
 
 func (s *stmt) setupBindings(args []driver.NamedValue) error {
@@ -386,12 +415,12 @@ func (s *stmt) setupBindings(args []driver.NamedValue) error {
 				err = s.Stmt.BindBlob(id, a)
 			case sqlite3.ZeroBlob:
 				err = s.Stmt.BindZeroBlob(id, int64(a))
-			case interface{ Value() any }:
-				err = s.Stmt.BindPointer(id, a.Value())
 			case time.Time:
-				err = s.Stmt.BindTime(id, a, sqlite3.TimeFormatDefault)
-			case json.Marshaler:
-				err = s.Stmt.BindJSON(id, a)
+				err = s.Stmt.BindTime(id, a, s.tmWrite)
+			case interface{ Pointer() any }:
+				err = s.Stmt.BindPointer(id, a.Pointer())
+			case interface{ JSON() any }:
+				err = s.Stmt.BindJSON(id, a.JSON())
 			case nil:
 				err = s.Stmt.BindNull(id)
 			default:
@@ -408,8 +437,10 @@ func (s *stmt) setupBindings(args []driver.NamedValue) error {
 func (s *stmt) CheckNamedValue(arg *driver.NamedValue) error {
 	switch arg.Value.(type) {
 	case bool, int, int64, float64, string, []byte,
-		sqlite3.ZeroBlob, interface{ Value() any },
-		time.Time, json.Marshaler, nil:
+		sqlite3.ZeroBlob, time.Time,
+		interface{ Pointer() any },
+		interface{ JSON() any },
+		nil:
 		return nil
 	default:
 		return driver.ErrSkip
@@ -448,12 +479,12 @@ func (r resultRowsAffected) RowsAffected() (int64, error) {
 }
 
 type rows struct {
-	ctx  context.Context
-	Stmt *sqlite3.Stmt
-	Conn *sqlite3.Conn
+	*stmt
+	ctx context.Context
 }
 
 func (r *rows) Close() error {
+	r.Stmt.ClearBindings()
 	return r.Stmt.Reset()
 }
 
@@ -466,9 +497,19 @@ func (r *rows) Columns() []string {
 	return columns
 }
 
+func (r *rows) ColumnTypeDatabaseTypeName(index int) string {
+	decltype := r.Stmt.ColumnDeclType(index)
+	if len := len(decltype); len > 0 && decltype[len-1] == ')' {
+		if i := strings.LastIndexByte(decltype, '('); i >= 0 {
+			decltype = decltype[:i]
+		}
+	}
+	return strings.ToUpper(strings.TrimSpace(decltype))
+}
+
 func (r *rows) Next(dest []driver.Value) error {
-	old := r.Conn.SetInterrupt(r.ctx)
-	defer r.Conn.SetInterrupt(old)
+	old := r.Stmt.Conn().SetInterrupt(r.ctx)
+	defer r.Stmt.Conn().SetInterrupt(old)
 
 	if !r.Stmt.Step() {
 		if err := r.Stmt.Err(); err != nil {
@@ -478,6 +519,10 @@ func (r *rows) Next(dest []driver.Value) error {
 	}
 
 	for i := range dest {
+		if t, ok := r.decodeTime(i); ok {
+			dest[i] = t
+			continue
+		}
 		switch r.Stmt.ColumnType(i) {
 		case sqlite3.INTEGER:
 			dest[i] = r.Stmt.ColumnInt64(i)
@@ -496,3 +541,22 @@ func (r *rows) Next(dest []driver.Value) error {
 
 	return r.Stmt.Err()
 }
+
+func (s *stmt) decodeTime(i int) (_ time.Time, _ bool) {
+	if s.tmRead == "" {
+		return
+	}
+	switch s.Stmt.ColumnType(i) {
+	case sqlite3.INTEGER, sqlite3.FLOAT, sqlite3.TEXT:
+		// maybe
+	default:
+		return
+	}
+	switch strings.ToUpper(s.Stmt.ColumnDeclType(i)) {
+	case "DATE", "TIME", "DATETIME", "TIMESTAMP":
+		// maybe
+	default:
+		return
+	}
+	return s.Stmt.ColumnTime(i, s.tmRead), s.Stmt.Err() == nil
+}

driver/driver_test.go

@@ -11,6 +11,7 @@ import (
 	"time"
 
 	"github.com/ncruces/go-sqlite3"
+	_ "github.com/ncruces/go-sqlite3/embed"
 	"github.com/ncruces/go-sqlite3/internal/util"
 )
 
@@ -113,13 +114,7 @@ func Test_Open_txLock(t *testing.T) {
 func Test_Open_txLock_invalid(t *testing.T) {
 	t.Parallel()
 
-	db, err := sql.Open("sqlite3", "file::memory:?_txlock=xclusive")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer db.Close()
-
-	_, err = db.Conn(context.TODO())
+	_, err := sql.Open("sqlite3", "file::memory:?_txlock=xclusive")
 	if err == nil {
 		t.Fatal("want error")
 	}
@@ -185,12 +180,6 @@ func Test_Prepare(t *testing.T) {
 	}
 	defer db.Close()
 
-	stmt, err := db.Prepare(`SELECT 1; -- HERE`)
-	if err != nil {
-		t.Error(err)
-	}
-	defer stmt.Close()
-
 	var serr *sqlite3.Error
 	_, err = db.Prepare(`SELECT`)
 	if err == nil {
@@ -206,18 +195,14 @@ func Test_Prepare(t *testing.T) {
 		t.Error("got message:", got)
 	}
 
+	_, err = db.Prepare(`SELECT 1; `)
+	if err.Error() != string(util.TailErr) {
+		t.Error("want tailErr")
+	}
+
 	_, err = db.Prepare(`SELECT 1; SELECT`)
-	if err == nil {
-		t.Error("want error")
-	}
-	if !errors.As(err, &serr) {
-		t.Fatalf("got %T, want sqlite3.Error", err)
-	}
-	if rc := serr.Code(); rc != sqlite3.ERROR {
-		t.Errorf("got %d, want sqlite3.ERROR", rc)
-	}
-	if got := err.Error(); got != `sqlite3: SQL logic error: incomplete input` {
-		t.Error("got message:", got)
+	if err.Error() != string(util.TailErr) {
+		t.Error("want tailErr")
 	}
 
 	_, err = db.Prepare(`SELECT 1; SELECT 2`)
@@ -296,6 +281,7 @@ func Test_QueryRow_blob_null(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
+	defer rows.Close()
 
 	want := [][]byte{nil, {0xca, 0xfe}, {0xba, 0xbe}, nil}
 	for i := 0; rows.Next(); i++ {

driver/json_test.go

@@ -18,7 +18,7 @@ func Example_json() {
 	defer db.Close()
 
 	_, err = db.Exec(`
-		CREATE TABLE orders (
+		CREATE TABLE IF NOT EXISTS orders (
 			cart_id INTEGER PRIMARY KEY,
 			user_id INTEGER NOT NULL,
 			cart    TEXT

driver/savepoint.go

@@ -9,7 +9,7 @@ import (
 
 // Savepoint establishes a new transaction savepoint.
 //
-// https://www.sqlite.org/lang_savepoint.html
+// https://sqlite.org/lang_savepoint.html
 func Savepoint(tx *sql.Tx) sqlite3.Savepoint {
 	var ctx saveptCtx
 	tx.ExecContext(&ctx, "")

driver/savepoint_test.go

@@ -5,6 +5,7 @@ import (
 	"log"
 
 	"github.com/ncruces/go-sqlite3/driver"
+	_ "github.com/ncruces/go-sqlite3/embed"
 	_ "github.com/ncruces/go-sqlite3/vfs/memdb"
 )
 

driver/time_test.go

@@ -49,16 +49,16 @@ func Fuzz_stringOrTime_1(f *testing.F) {
 // This checks that any [time.Time] can be recovered as a [time.Time],
 // with nanosecond accuracy, and preserving any timezone offset.
 func Fuzz_stringOrTime_2(f *testing.F) {
-	f.Add(0, 0)
-	f.Add(0, 1)
-	f.Add(0, -1)
-	f.Add(0, 999_999_999)
-	f.Add(0, 1_000_000_000)
-	f.Add(7956915742, 222_222_222)    // twosday
-	f.Add(639095955742, 222_222_222)  // twosday, year 22222AD
-	f.Add(-763421161058, 222_222_222) // twosday, year 22222BC
+	f.Add(int64(0), int64(0))
+	f.Add(int64(0), int64(1))
+	f.Add(int64(0), int64(-1))
+	f.Add(int64(0), int64(999_999_999))
+	f.Add(int64(0), int64(1_000_000_000))
+	f.Add(int64(7956915742), int64(222_222_222))    // twosday
+	f.Add(int64(639095955742), int64(222_222_222))  // twosday, year 22222AD
+	f.Add(int64(-763421161058), int64(222_222_222)) // twosday, year 22222BC
 
-	checkTime := func(t *testing.T, date time.Time) {
+	checkTime := func(t testing.TB, date time.Time) {
 		value := stringOrTime([]byte(date.Format(time.RFC3339Nano)))
 
 		switch v := value.(type) {
@@ -80,7 +80,7 @@ func Fuzz_stringOrTime_2(f *testing.F) {
 		}
 	}
 
-	f.Fuzz(func(t *testing.T, sec, nsec int) {
+	f.Fuzz(func(t *testing.T, sec, nsec int64) {
 		// Reduce the search space.
 		if 1e12 < sec || sec < -1e12 {
 			// Dates before 29000BC and after 33000AD; I think we're safe.
@@ -91,7 +91,7 @@ func Fuzz_stringOrTime_2(f *testing.F) {
 			return
 		}
 
-		unix := time.Unix(int64(sec), int64(nsec))
+		unix := time.Unix(sec, nsec)
 		checkTime(t, unix)
 		checkTime(t, unix.UTC())
 		checkTime(t, unix.In(time.FixedZone("", -8*3600)))

embed/README.md

@@ -1,15 +1,15 @@
 # Embeddable WASM build of SQLite
 
-This folder includes an embeddable WASM build of SQLite 3.44.0 for use with
+This folder includes an embeddable WASM build of SQLite 3.44.2 for use with
 [`github.com/ncruces/go-sqlite3`](https://pkg.go.dev/github.com/ncruces/go-sqlite3).
 
 The following optional features are compiled in:
-- [math functions](https://www.sqlite.org/lang_mathfunc.html)
-- [FTS3/4](https://www.sqlite.org/fts3.html)/[5](https://www.sqlite.org/fts5.html)
-- [JSON](https://www.sqlite.org/json1.html)
-- [R*Tree](https://www.sqlite.org/rtree.html)
-- [GeoPoly](https://www.sqlite.org/geopoly.html)
-- [soundex](https://www.sqlite.org/lang_corefunc.html#soundex)
+- [math functions](https://sqlite.org/lang_mathfunc.html)
+- [FTS3/4](https://sqlite.org/fts3.html)/[5](https://sqlite.org/fts5.html)
+- [JSON](https://sqlite.org/json1.html)
+- [R*Tree](https://sqlite.org/rtree.html)
+- [GeoPoly](https://sqlite.org/geopoly.html)
+- [soundex](https://sqlite.org/lang_corefunc.html#soundex)
 - [base64](https://github.com/sqlite/sqlite/blob/master/ext/misc/base64.c)
 - [decimal](https://github.com/sqlite/sqlite/blob/master/ext/misc/decimal.c)
 - [regexp](https://github.com/sqlite/sqlite/blob/master/ext/misc/regexp.c)

embed/build.sh

@@ -23,7 +23,7 @@ WASI_SDK="$ROOT/tools/wasi-sdk-20.0/bin"
 
 trap 'rm -f sqlite3.tmp' EXIT
 "$BINARYEN/wasm-ctor-eval" -g -c _initialize sqlite3.wasm -o sqlite3.tmp
-"$BINARYEN/wasm-opt" -g --strip -c -O3 \
+"$BINARYEN/wasm-opt" -g --strip --strip-producers -c -O3 \
 	sqlite3.tmp -o sqlite3.wasm \
 	--enable-simd --enable-mutable-globals --enable-multivalue \
 	--enable-bulk-memory --enable-reference-types \

embed/exports.txt

@@ -1,80 +1,101 @@
 free
 malloc
 malloc_destructor
-sqlite3_errcode
-sqlite3_errstr
-sqlite3_errmsg
-sqlite3_error_offset
-sqlite3_open_v2
-sqlite3_close
-sqlite3_close_v2
-sqlite3_prepare_v3
-sqlite3_finalize
-sqlite3_reset
-sqlite3_step
-sqlite3_exec
-sqlite3_interrupt
-sqlite3_progress_handler_go
-sqlite3_clear_bindings
+sqlite3_aggregate_context
+sqlite3_anycollseq_init
+sqlite3_backup_finish
+sqlite3_backup_init
+sqlite3_backup_pagecount
+sqlite3_backup_remaining
+sqlite3_backup_step
+sqlite3_bind_blob64
+sqlite3_bind_double
+sqlite3_bind_int64
+sqlite3_bind_null
 sqlite3_bind_parameter_count
 sqlite3_bind_parameter_index
 sqlite3_bind_parameter_name
-sqlite3_bind_null
-sqlite3_bind_int64
-sqlite3_bind_double
-sqlite3_bind_text64
-sqlite3_bind_blob64
-sqlite3_bind_zeroblob64
 sqlite3_bind_pointer_go
-sqlite3_column_count
-sqlite3_column_name
-sqlite3_column_type
-sqlite3_column_int64
-sqlite3_column_double
-sqlite3_column_text
+sqlite3_bind_text64
+sqlite3_bind_value
+sqlite3_bind_zeroblob64
+sqlite3_blob_bytes
+sqlite3_blob_close
+sqlite3_blob_open
+sqlite3_blob_read
+sqlite3_blob_reopen
+sqlite3_blob_write
+sqlite3_changes64
+sqlite3_clear_bindings
+sqlite3_close
+sqlite3_close_v2
 sqlite3_column_blob
 sqlite3_column_bytes
-sqlite3_blob_open
-sqlite3_blob_close
-sqlite3_blob_reopen
-sqlite3_blob_bytes
-sqlite3_blob_read
-sqlite3_blob_write
-sqlite3_backup_init
-sqlite3_backup_step
-sqlite3_backup_finish
-sqlite3_backup_remaining
-sqlite3_backup_pagecount
-sqlite3_uri_parameter
-sqlite3_uri_key
-sqlite3_changes64
-sqlite3_last_insert_rowid
-sqlite3_get_autocommit
-sqlite3_anycollseq_init
+sqlite3_column_count
+sqlite3_column_decltype
+sqlite3_column_double
+sqlite3_column_int64
+sqlite3_column_name
+sqlite3_column_text
+sqlite3_column_type
+sqlite3_column_value
+sqlite3_create_aggregate_function_go
 sqlite3_create_collation_go
 sqlite3_create_function_go
-sqlite3_create_aggregate_function_go
+sqlite3_create_module_go
 sqlite3_create_window_function_go
-sqlite3_aggregate_context
-sqlite3_user_data
-sqlite3_set_auxdata_go
+sqlite3_declare_vtab
+sqlite3_errcode
+sqlite3_errmsg
+sqlite3_error_offset
+sqlite3_errstr
+sqlite3_exec
+sqlite3_finalize
+sqlite3_get_autocommit
 sqlite3_get_auxdata
-sqlite3_value_type
-sqlite3_value_int64
-sqlite3_value_double
-sqlite3_value_text
-sqlite3_value_blob
-sqlite3_value_bytes
-sqlite3_value_pointer_go
-sqlite3_result_null
-sqlite3_result_int64
-sqlite3_result_double
-sqlite3_result_text64
+sqlite3_interrupt
+sqlite3_last_insert_rowid
+sqlite3_open_v2
+sqlite3_overload_function
+sqlite3_prepare_v3
+sqlite3_progress_handler_go
+sqlite3_reset
 sqlite3_result_blob64
-sqlite3_result_zeroblob64
-sqlite3_result_pointer_go
-sqlite3_result_value
+sqlite3_result_double
 sqlite3_result_error
 sqlite3_result_error_code
 sqlite3_result_error_nomem
-sqlite3_result_error_toobig
+sqlite3_result_error_toobig
+sqlite3_result_int64
+sqlite3_result_null
+sqlite3_result_pointer_go
+sqlite3_result_text64
+sqlite3_result_value
+sqlite3_result_zeroblob64
+sqlite3_set_auxdata_go
+sqlite3_step
+sqlite3_stmt_busy
+sqlite3_stmt_readonly
+sqlite3_stmt_status
+sqlite3_uri_key
+sqlite3_uri_parameter
+sqlite3_user_data
+sqlite3_value_blob
+sqlite3_value_bytes
+sqlite3_value_double
+sqlite3_value_dup
+sqlite3_value_free
+sqlite3_value_int64
+sqlite3_value_nochange
+sqlite3_value_pointer_go
+sqlite3_value_text
+sqlite3_value_type
+sqlite3_vtab_collation
+sqlite3_vtab_config_go
+sqlite3_vtab_distinct
+sqlite3_vtab_in
+sqlite3_vtab_in_first
+sqlite3_vtab_in_next
+sqlite3_vtab_nochange
+sqlite3_vtab_on_conflict
+sqlite3_vtab_rhs_value

error.go

@@ -1,6 +1,7 @@
 package sqlite3
 
 import (
+	"errors"
 	"strconv"
 	"strings"
 
@@ -9,7 +10,7 @@ import (
 
 // Error wraps an SQLite Error Code.
 //
-// https://www.sqlite.org/c3ref/errcode.html
+// https://sqlite.org/c3ref/errcode.html
 type Error struct {
 	str  string
 	msg  string
@@ -19,14 +20,14 @@ type Error struct {
 
 // Code returns the primary error code for this error.
 //
-// https://www.sqlite.org/rescode.html
+// https://sqlite.org/rescode.html
 func (e *Error) Code() ErrorCode {
 	return ErrorCode(e.code)
 }
 
 // ExtendedCode returns the extended error code for this error.
 //
-// https://www.sqlite.org/rescode.html
+// https://sqlite.org/rescode.html
 func (e *Error) ExtendedCode() ExtendedErrorCode {
 	return ExtendedErrorCode(e.code)
 }
@@ -43,8 +44,7 @@ func (e *Error) Error() string {
 	}
 
 	if e.msg != "" {
-		b.WriteByte(':')
-		b.WriteByte(' ')
+		b.WriteString(": ")
 		b.WriteString(e.msg)
 	}
 
@@ -135,3 +135,28 @@ func (e ExtendedErrorCode) Temporary() bool {
 func (e ExtendedErrorCode) Timeout() bool {
 	return e == BUSY_TIMEOUT
 }
+
+func errorCode(err error, def ErrorCode) (msg string, code uint32) {
+	switch code := err.(type) {
+	case ErrorCode:
+		return "", uint32(code)
+	case ExtendedErrorCode:
+		return "", uint32(code)
+	case *Error:
+		return code.msg, uint32(code.code)
+	case nil:
+		return "", _OK
+	}
+
+	var ecode ErrorCode
+	var xcode xErrorCode
+	switch {
+	case errors.As(err, &xcode):
+		code = uint32(xcode)
+	case errors.As(err, &ecode):
+		code = uint32(ecode)
+	default:
+		code = uint32(def)
+	}
+	return err.Error(), code
+}

error_test.go

@@ -135,8 +135,8 @@ func Test_ErrorCode_Error(t *testing.T) {
 	// Test all error codes.
 	for i := 0; i == int(ErrorCode(i)); i++ {
 		want := "sqlite3: "
-		r := db.call(db.api.errstr, uint64(i))
-		want += util.ReadString(db.mod, uint32(r), _MAX_STRING)
+		r := db.call("sqlite3_errstr", uint64(i))
+		want += util.ReadString(db.mod, uint32(r), _MAX_NAME)
 
 		got := ErrorCode(i).Error()
 		if got != want {
@@ -157,8 +157,8 @@ func Test_ExtendedErrorCode_Error(t *testing.T) {
 	// Test all extended error codes.
 	for i := 0; i == int(ExtendedErrorCode(i)); i++ {
 		want := "sqlite3: "
-		r := db.call(db.api.errstr, uint64(i))
-		want += util.ReadString(db.mod, uint32(r), _MAX_STRING)
+		r := db.call("sqlite3_errstr", uint64(i))
+		want += util.ReadString(db.mod, uint32(r), _MAX_NAME)
 
 		got := ExtendedErrorCode(i).Error()
 		if got != want {

ext/array/array.go

@@ -0,0 +1,135 @@
+// Package array provides the array table-valued SQL function.
+package array
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/ncruces/go-sqlite3"
+)
+
+// Register registers the array single-argument, table-valued SQL function.
+// The argument must be an [sqlite3.Pointer] to a Go slice or array
+// of ints, floats, bools, strings or blobs.
+//
+// https://sqlite.org/carray.html
+func Register(db *sqlite3.Conn) {
+	sqlite3.CreateModule[array](db, "array", nil,
+		func(db *sqlite3.Conn, _, _, _ string, _ ...string) (array, error) {
+			err := db.DeclareVtab(`CREATE TABLE x(value, array HIDDEN)`)
+			return array{}, err
+		})
+}
+
+type array struct{}
+
+func (array) BestIndex(idx *sqlite3.IndexInfo) error {
+	for i, cst := range idx.Constraint {
+		if cst.Column == 1 && cst.Op == sqlite3.INDEX_CONSTRAINT_EQ && cst.Usable {
+			idx.ConstraintUsage[i] = sqlite3.IndexConstraintUsage{
+				Omit:      true,
+				ArgvIndex: 1,
+			}
+			idx.EstimatedCost = 1
+			idx.EstimatedRows = 100
+			return nil
+		}
+	}
+	return sqlite3.CONSTRAINT
+}
+
+func (array) Open() (sqlite3.VTabCursor, error) {
+	return &cursor{}, nil
+}
+
+type cursor struct {
+	array reflect.Value
+	rowID int
+}
+
+func (c *cursor) EOF() bool {
+	return c.rowID >= c.array.Len()
+}
+
+func (c *cursor) Next() error {
+	c.rowID++
+	return nil
+}
+
+func (c *cursor) RowID() (int64, error) {
+	return int64(c.rowID), nil
+}
+
+func (c *cursor) Column(ctx *sqlite3.Context, n int) error {
+	if n != 0 {
+		return nil
+	}
+
+	v := c.array.Index(c.rowID)
+	k := v.Kind()
+
+	if k == reflect.Interface {
+		if v.IsNil() {
+			ctx.ResultNull()
+			return nil
+		}
+		v = v.Elem()
+		k = v.Kind()
+	}
+
+	switch {
+	case v.CanInt():
+		ctx.ResultInt64(v.Int())
+
+	case v.CanUint():
+		i64 := int64(v.Uint())
+		if i64 < 0 {
+			return fmt.Errorf("array: integer element overflow:%.0w %d", sqlite3.MISMATCH, v.Uint())
+		}
+		ctx.ResultInt64(i64)
+
+	case v.CanFloat():
+		ctx.ResultFloat(v.Float())
+
+	case k == reflect.Bool:
+		ctx.ResultBool(v.Bool())
+
+	case k == reflect.String:
+		ctx.ResultText(v.String())
+
+	case (k == reflect.Slice || k == reflect.Array && v.CanAddr()) &&
+		v.Type().Elem().Kind() == reflect.Uint8:
+		ctx.ResultBlob(v.Bytes())
+
+	default:
+		return fmt.Errorf("array: unsupported element:%.0w %v", sqlite3.MISMATCH, v.Type())
+	}
+	return nil
+}
+
+func (c *cursor) Filter(idxNum int, idxStr string, arg ...sqlite3.Value) error {
+	array := reflect.ValueOf(arg[0].Pointer())
+	array, err := indexable(array)
+	if err != nil {
+		return err
+	}
+
+	c.array = array
+	c.rowID = 0
+	return nil
+}
+
+func indexable(v reflect.Value) (reflect.Value, error) {
+	if v.Kind() == reflect.Slice {
+		return v, nil
+	}
+	if v.Kind() == reflect.Array {
+		return v, nil
+	}
+	if v.Kind() == reflect.Pointer {
+		if v := v.Elem(); v.Kind() == reflect.Array {
+			return v, nil
+		}
+	}
+	return v, fmt.Errorf("array: unsupported argument:%.0w %v", sqlite3.MISMATCH, v.Type())
+}

ext/array/array_test.go

@@ -0,0 +1,94 @@
+package array_test
+
+import (
+	"fmt"
+	"log"
+	"math"
+	"reflect"
+	"testing"
+
+	"github.com/ncruces/go-sqlite3"
+	"github.com/ncruces/go-sqlite3/driver"
+	_ "github.com/ncruces/go-sqlite3/embed"
+	"github.com/ncruces/go-sqlite3/ext/array"
+)
+
+func Example() {
+	db, err := driver.Open(":memory:", func(c *sqlite3.Conn) error {
+		array.Register(c)
+		return nil
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	rows, err := db.Query(`
+		SELECT name
+		FROM pragma_function_list
+		WHERE name like 'geopoly%' AND narg IN array(?)`,
+		sqlite3.Pointer([]int{2, 3, 4}))
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var name string
+		err := rows.Scan(&name)
+		if err != nil {
+			log.Fatal(err)
+		}
+		fmt.Printf("%s\n", name)
+	}
+	if err := rows.Err(); err != nil {
+		log.Fatal(err)
+	}
+	// Unordered output:
+	// geopoly_regular
+	// geopoly_overlap
+	// geopoly_contains_point
+	// geopoly_within
+}
+
+func Test_cursor_Column(t *testing.T) {
+	t.Parallel()
+
+	db, err := driver.Open(":memory:", func(c *sqlite3.Conn) error {
+		array.Register(c)
+		return nil
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	rows, err := db.Query(`
+		SELECT rowid, value FROM array(?)`,
+		sqlite3.Pointer(&[...]any{nil, true, 1, uint(2), math.Pi, "text", []byte{1, 2, 3}}))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer rows.Close()
+
+	want := []string{"nil", "int64", "int64", "int64", "float64", "string", "[]uint8"}
+
+	for rows.Next() {
+		var id, val any
+		err := rows.Scan(&id, &val)
+		if err != nil {
+			t.Fatal(err)
+		}
+		if want := want[0]; val == nil {
+			if want != "nil" {
+				t.Errorf("got nil, want %s", want)
+			}
+		} else if got := reflect.TypeOf(val).String(); got != want {
+			t.Errorf("got %s, want %s", got, want)
+		}
+		want = want[1:]
+	}
+	if err := rows.Err(); err != nil {
+		log.Fatal(err)
+	}
+}

ext/blob/blob.go

@@ -5,9 +5,18 @@ import (
 	"errors"
 
 	"github.com/ncruces/go-sqlite3"
+	"github.com/ncruces/go-sqlite3/internal/util"
 )
 
-// Register registers the blob_open SQL function.
+// Register registers the blob_open SQL function:
+//
+//	blob_open(schema, table, column, rowid, flags, callback, args...)
+//
+// The callback must be an [sqlite3.Pointer] to an [OpenCallback].
+// Any optional args will be passed to the callback,
+// along with the [sqlite3.Blob] handle.
+//
+// https://sqlite.org/c3ref/blob.html
 func Register(db *sqlite3.Conn) {
 	db.CreateFunction("blob_open", -1,
 		sqlite3.DETERMINISTIC|sqlite3.DIRECTONLY, openBlob)
@@ -15,7 +24,7 @@ func Register(db *sqlite3.Conn) {
 
 func openBlob(ctx sqlite3.Context, arg ...sqlite3.Value) {
 	if len(arg) < 6 {
-		ctx.ResultError(errors.New("wrong number of arguments to function blob_open()"))
+		ctx.ResultError(util.ErrorString("blob_open: wrong number of arguments"))
 		return
 	}
 
@@ -26,7 +35,7 @@ func openBlob(ctx sqlite3.Context, arg ...sqlite3.Value) {
 	if ok {
 		err = blob.Reopen(row)
 		if errors.Is(err, sqlite3.MISUSE) {
-			// Blob was closed (db, table or column changed).
+			// Blob was closed (db, table, column or write changed).
 			ok = false
 		}
 	}
@@ -50,10 +59,12 @@ func openBlob(ctx sqlite3.Context, arg ...sqlite3.Value) {
 		return
 	}
 
-	// This ensures the blob is closed if db, table or column change.
-	ctx.SetAuxData(0, blob)
-	ctx.SetAuxData(1, blob)
-	ctx.SetAuxData(2, blob)
+	// This ensures the blob is closed if db, table, column or write change.
+	ctx.SetAuxData(0, blob) // db
+	ctx.SetAuxData(1, blob) // table
+	ctx.SetAuxData(2, blob) // column
+	ctx.SetAuxData(4, blob) // write
 }
 
+// OpenCallback is the type for the blob_open callback.
 type OpenCallback func(*sqlite3.Blob, ...sqlite3.Value) error

ext/blob/blob_test.go

@@ -4,10 +4,13 @@ import (
 	"io"
 	"log"
 	"os"
+	"reflect"
+	"testing"
 
 	"github.com/ncruces/go-sqlite3"
 	"github.com/ncruces/go-sqlite3/driver"
 	_ "github.com/ncruces/go-sqlite3/embed"
+	"github.com/ncruces/go-sqlite3/ext/array"
 	"github.com/ncruces/go-sqlite3/ext/blob"
 	_ "github.com/ncruces/go-sqlite3/vfs/memdb"
 )
@@ -59,3 +62,67 @@ func Example() {
 	// Output:
 	// Hello BLOB!
 }
+
+func TestRegister(t *testing.T) {
+	t.Parallel()
+
+	db, err := sqlite3.Open(":memory:")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	blob.Register(db)
+	array.Register(db)
+
+	err = db.Exec(`SELECT blob_open()`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`
+		CREATE TABLE IF NOT EXISTS test1 (col);
+		CREATE TABLE IF NOT EXISTS test2 (col);
+		INSERT INTO test1 VALUES (x'cafe');
+		INSERT INTO test2 VALUES (x'babe');
+	`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	stmt, _, err := db.Prepare(`SELECT blob_open('main', value, 'col', 1, false, ?) FROM array(?)`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer stmt.Close()
+
+	var got []string
+	err = stmt.BindPointer(1, blob.OpenCallback(func(b *sqlite3.Blob, _ ...sqlite3.Value) error {
+		d, err := io.ReadAll(b)
+		if err != nil {
+			return err
+		}
+		got = append(got, string(d))
+		return nil
+	}))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = stmt.BindPointer(2, []string{"test1", "test2"})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = stmt.Exec()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	want := []string{"\xca\xfe", "\xba\xbe"}
+	if !reflect.DeepEqual(got, want) {
+		t.Errorf("got %v, want %v", got, want)
+	}
+}

ext/csv/csv.go

@@ -0,0 +1,211 @@
+// Package csv provides a CSV virtual table.
+//
+// The CSV virtual table reads RFC 4180 formatted comma-separated values,
+// and returns that content as if it were rows and columns of an SQL table.
+//
+// https://sqlite.org/csv.html
+package csv
+
+import (
+	"encoding/csv"
+	"fmt"
+	"io"
+	"math"
+	"os"
+	"strings"
+
+	"github.com/ncruces/go-sqlite3"
+)
+
+// Register registers the CSV virtual table.
+// If a filename is specified, `os.Open` is used to read it from disk.
+func Register(db *sqlite3.Conn) {
+	RegisterOpen(db, func(name string) (io.ReaderAt, error) {
+		return os.Open(name)
+	})
+}
+
+// RegisterOpen registers the CSV virtual table.
+// If a filename is specified, open is used to open the file.
+func RegisterOpen(db *sqlite3.Conn, open func(name string) (io.ReaderAt, error)) {
+	declare := func(db *sqlite3.Conn, _, _, _ string, arg ...string) (_ *table, err error) {
+		var (
+			filename string
+			data     string
+			schema   string
+			header   bool
+			columns  int  = -1
+			comma    rune = ','
+
+			done = map[string]struct{}{}
+		)
+
+		for _, arg := range arg {
+			key, val := getParam(arg)
+			if _, ok := done[key]; ok {
+				return nil, fmt.Errorf("csv: more than one %q parameter", key)
+			}
+			switch key {
+			case "filename":
+				filename = unquoteParam(val)
+			case "data":
+				data = unquoteParam(val)
+			case "schema":
+				schema = unquoteParam(val)
+			case "header":
+				header, err = boolParam(key, val)
+			case "columns":
+				columns, err = uintParam(key, val)
+			case "comma":
+				comma, err = runeParam(key, val)
+			default:
+				return nil, fmt.Errorf("csv: unknown %q parameter", key)
+			}
+			if err != nil {
+				return nil, err
+			}
+			done[key] = struct{}{}
+		}
+
+		if (filename == "") == (data == "") {
+			return nil, fmt.Errorf(`csv: must specify either "filename" or "data" but not both`)
+		}
+
+		var r io.ReaderAt
+		if filename != "" {
+			r, err = open(filename)
+		} else {
+			r = strings.NewReader(data)
+		}
+		if err != nil {
+			return nil, err
+		}
+
+		table := &table{
+			r:      r,
+			comma:  comma,
+			header: header,
+			bom:    -1,
+		}
+		defer func() {
+			if err != nil {
+				table.Close()
+			}
+		}()
+
+		if schema == "" {
+			var row []string
+			if header || columns < 0 {
+				row, err = table.newReader().Read()
+				if err != nil {
+					return nil, err
+				}
+			}
+			schema = getSchema(header, columns, row)
+		}
+
+		err = db.DeclareVtab(schema)
+		if err != nil {
+			return nil, err
+		}
+		err = db.VtabConfig(sqlite3.VTAB_DIRECTONLY)
+		if err != nil {
+			return nil, err
+		}
+		return table, nil
+	}
+
+	sqlite3.CreateModule(db, "csv", declare, declare)
+}
+
+type table struct {
+	r      io.ReaderAt
+	comma  rune
+	header bool
+	bom    int8
+}
+
+func (t *table) Close() error {
+	if c, ok := t.r.(io.Closer); ok {
+		err := c.Close()
+		t.r = nil
+		return err
+	}
+	return nil
+}
+
+func (t *table) BestIndex(idx *sqlite3.IndexInfo) error {
+	idx.EstimatedCost = 1e6
+	return nil
+}
+
+func (t *table) Open() (sqlite3.VTabCursor, error) {
+	return &cursor{table: t}, nil
+}
+
+func (t *table) Rename(new string) error {
+	return nil
+}
+
+func (t *table) Integrity(schema, table string, flags int) (err error) {
+	if flags&1 == 0 {
+		_, err = t.newReader().ReadAll()
+	}
+	return err
+}
+
+func (t *table) newReader() *csv.Reader {
+	if t.bom < 0 {
+		var bom [3]byte
+		t.r.ReadAt(bom[:], 0)
+		if string(bom[:]) == "\xEF\xBB\xBF" {
+			t.bom = 3
+		} else {
+			t.bom = 0
+		}
+	}
+	csv := csv.NewReader(io.NewSectionReader(t.r, int64(t.bom), math.MaxInt64))
+	csv.ReuseRecord = true
+	csv.Comma = t.comma
+	return csv
+}
+
+type cursor struct {
+	table *table
+	csv   *csv.Reader
+	row   []string
+	rowID int64
+}
+
+func (c *cursor) Filter(idxNum int, idxStr string, arg ...sqlite3.Value) error {
+	c.csv = c.table.newReader()
+	if c.table.header {
+		c.Next() // skip header
+	}
+	c.rowID = 0
+	return c.Next()
+}
+
+func (c *cursor) Next() (err error) {
+	c.rowID++
+	c.row, err = c.csv.Read()
+	if err != io.EOF {
+		return err
+	}
+	return nil
+}
+
+func (c *cursor) EOF() bool {
+	return c.row == nil
+}
+
+func (c *cursor) RowID() (int64, error) {
+	return c.rowID, nil
+}
+
+func (c *cursor) Column(ctx *sqlite3.Context, col int) error {
+	if col < len(c.row) {
+		ctx.ResultText(c.row[col])
+	}
+	return nil
+}

ext/csv/csv_test.go

@@ -0,0 +1,155 @@
+package csv_test
+
+import (
+	"fmt"
+	"log"
+	"testing"
+
+	"github.com/ncruces/go-sqlite3"
+	_ "github.com/ncruces/go-sqlite3/embed"
+	"github.com/ncruces/go-sqlite3/ext/csv"
+)
+
+func Example() {
+	db, err := sqlite3.Open(":memory:")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	csv.Register(db)
+
+	err = db.Exec(`
+		CREATE VIRTUAL TABLE IF NOT EXISTS eurofxref USING csv(
+			filename = 'testdata/eurofxref.csv',
+			header   = YES,
+			columns  = 42,
+		)`)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	stmt, _, err := db.Prepare(`SELECT USD FROM eurofxref WHERE Date = '2022-02-22'`)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer stmt.Close()
+
+	if stmt.Step() {
+		fmt.Printf("On Twosday, 1€ = $%g", stmt.ColumnFloat(0))
+	}
+	if err := stmt.Reset(); err != nil {
+		log.Fatal(err)
+	}
+
+	err = db.Exec(`DROP TABLE eurofxref`)
+	if err != nil {
+		log.Fatal(err)
+	}
+	// Output:
+	// On Twosday, 1€ = $1.1342
+}
+
+func TestRegister(t *testing.T) {
+	t.Parallel()
+
+	db, err := sqlite3.Open(":memory:")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	csv.Register(db)
+
+	const data = "\xEF\xBB\xBF" + `
+"Rob"	"Pike"	rob
+"Ken"	Thompson	ken
+Robert	"Griesemer"	"gri"`
+	err = db.Exec(`
+		CREATE VIRTUAL TABLE temp.users USING csv(
+			data   = ` + sqlite3.Quote(data) + `,
+			schema = 'CREATE TABLE x(first_name, last_name, username)',
+			comma  = '\t'
+		)`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	stmt, _, err := db.Prepare(`SELECT * FROM temp.users WHERE rowid = 1 ORDER BY username`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer stmt.Close()
+
+	if !stmt.Step() {
+		t.Fatal("no rows")
+	}
+	if got := stmt.ColumnText(1); got != "Pike" {
+		t.Errorf("got %q want Pike", got)
+	}
+	if stmt.Step() {
+		t.Fatal("more rows")
+	}
+
+	err = db.Exec(`ALTER TABLE temp.users RENAME TO csv`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = db.Exec(`PRAGMA integrity_check`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = db.Exec(`DROP TABLE temp.csv`)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func TestRegister_errors(t *testing.T) {
+	t.Parallel()
+
+	db, err := sqlite3.Open(":memory:")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	csv.Register(db)
+
+	err = db.Exec(`CREATE VIRTUAL TABLE temp.users USING csv()`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE temp.users USING csv(data='abc', data='abc')`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE temp.users USING csv(data='abc', xpto='abc')`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE temp.users USING csv(data='abc', comma='"')`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE temp.users USING csv(data='abc', header=tru)`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+}

ext/csv/params.go

@@ -0,0 +1,65 @@
+package csv
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+func getParam(arg string) (key, val string) {
+	key, val, _ = strings.Cut(arg, "=")
+	key = strings.TrimSpace(key)
+	val = strings.TrimSpace(val)
+	return
+}
+
+func uintParam(key, val string) (int, error) {
+	i, err := strconv.ParseUint(val, 10, 15)
+	if err != nil {
+		return 0, fmt.Errorf("csv: invalid %q parameter: %s", key, val)
+	}
+	return int(i), nil
+}
+
+func boolParam(key, val string) (bool, error) {
+	if val == "" || val == "1" ||
+		strings.EqualFold(val, "true") ||
+		strings.EqualFold(val, "yes") ||
+		strings.EqualFold(val, "on") {
+		return true, nil
+	}
+	if val == "0" ||
+		strings.EqualFold(val, "false") ||
+		strings.EqualFold(val, "no") ||
+		strings.EqualFold(val, "off") {
+		return false, nil
+	}
+	return false, fmt.Errorf("csv: invalid %q parameter: %s", key, val)
+}
+
+func runeParam(key, val string) (rune, error) {
+	r, _, tail, err := strconv.UnquoteChar(unquoteParam(val), 0)
+	if tail != "" || err != nil {
+		return 0, fmt.Errorf("csv: invalid %q parameter: %s", key, val)
+	}
+	return r, nil
+}
+
+func unquoteParam(val string) string {
+	if len(val) < 2 {
+		return val
+	}
+	if val[0] != val[len(val)-1] {
+		return val
+	}
+	var old, new string
+	switch val[0] {
+	default:
+		return val
+	case '"':
+		old, new = `""`, `"`
+	case '\'':
+		old, new = `''`, `'`
+	}
+	return strings.ReplaceAll(val[1:len(val)-1], old, new)
+}

ext/csv/params_test.go

@@ -0,0 +1,104 @@
+package csv
+
+import "testing"
+
+func Test_uintParam(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		arg string
+		key string
+		val int
+		err bool
+	}{
+		{"columns 1", "columns 1", 0, true},
+		{"columns  = 1", "columns", 1, false},
+		{"columns\t= 2", "columns", 2, false},
+		{" columns = 3", "columns", 3, false},
+		{" columns = -1", "columns", 0, true},
+		{" columns = 32768", "columns", 0, true},
+	}
+	for _, tt := range tests {
+		t.Run(tt.arg, func(t *testing.T) {
+			key, val := getParam(tt.arg)
+			if key != tt.key {
+				t.Errorf("getParam() %v, want err %v", key, tt.key)
+			}
+			got, err := uintParam(key, val)
+			if (err != nil) != tt.err {
+				t.Fatalf("uintParam() error = %v, want err %v", err, tt.err)
+			}
+			if got != tt.val {
+				t.Errorf("uintParam() = %v, want %v", got, tt.val)
+			}
+		})
+	}
+}
+
+func Test_boolParam(t *testing.T) {
+	tests := []struct {
+		arg string
+		key string
+		val bool
+		err bool
+	}{
+		{"header", "header", true, false},
+		{"header\t= 1", "header", true, false},
+		{" header = 0", "header", false, false},
+		{" header = TrUe", "header", true, false},
+		{" header = FaLsE", "header", false, false},
+		{" header = Yes", "header", true, false},
+		{" header = nO", "header", false, false},
+		{" header = On", "header", true, false},
+		{" header = Off", "header", false, false},
+		{" header = T", "header", false, true},
+		{" header = f", "header", false, true},
+	}
+	for _, tt := range tests {
+		t.Run(tt.arg, func(t *testing.T) {
+			key, val := getParam(tt.arg)
+			if key != tt.key {
+				t.Errorf("getParam() %v, want err %v", key, tt.key)
+			}
+			got, err := boolParam(key, val)
+			if (err != nil) != tt.err {
+				t.Fatalf("boolParam() error = %v, want err %v", err, tt.err)
+			}
+			if got != tt.val {
+				t.Errorf("boolParam() = %v, want %v", got, tt.val)
+			}
+		})
+	}
+}
+
+func Test_runeParam(t *testing.T) {
+	tests := []struct {
+		arg string
+		key string
+		val rune
+		err bool
+	}{
+		{"comma", "comma", 0, true},
+		{"comma\t= ,", "comma", ',', false},
+		{" comma = ;", "comma", ';', false},
+		{" comma = ;;", "comma", 0, true},
+		{` comma = '\t`, "comma", 0, true},
+		{` comma = '\t'`, "comma", '\t', false},
+		{` comma = "\t"`, "comma", '\t', false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.arg, func(t *testing.T) {
+			key, val := getParam(tt.arg)
+			if key != tt.key {
+				t.Errorf("getParam() %v, want err %v", key, tt.key)
+			}
+			got, err := runeParam(key, val)
+			if (err != nil) != tt.err {
+				t.Fatalf("runeParam() error = %v, want err %v", err, tt.err)
+			}
+			if got != tt.val {
+				t.Errorf("runeParam() = %v, want %v", got, tt.val)
+			}
+		})
+	}
+}

ext/csv/schema.go

@@ -0,0 +1,39 @@
+package csv
+
+import (
+	"strconv"
+	"strings"
+
+	"github.com/ncruces/go-sqlite3"
+)
+
+func getSchema(header bool, columns int, row []string) string {
+	var sep string
+	var str strings.Builder
+	str.WriteString("CREATE TABLE x(")
+
+	if 0 <= columns && columns < len(row) {
+		row = row[:columns]
+	}
+	for i, f := range row {
+		str.WriteString(sep)
+		if header && f != "" {
+			str.WriteString(sqlite3.QuoteIdentifier(f))
+		} else {
+			str.WriteString("c")
+			str.WriteString(strconv.Itoa(i + 1))
+		}
+		str.WriteString(" TEXT")
+		sep = ","
+	}
+	for i := len(row); i < columns; i++ {
+		str.WriteString(sep)
+		str.WriteString("c")
+		str.WriteString(strconv.Itoa(i + 1))
+		str.WriteString(" TEXT")
+		sep = ","
+	}
+	str.WriteByte(')')
+
+	return str.String()
+}

ext/csv/schema_test.go

@@ -0,0 +1,28 @@
+package csv
+
+import "testing"
+
+func Test_getSchema(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		header  bool
+		columns int
+		row     []string
+		want    string
+	}{
+		{true, 2, nil, `CREATE TABLE x(c1 TEXT,c2 TEXT)`},
+		{false, 2, nil, `CREATE TABLE x(c1 TEXT,c2 TEXT)`},
+		{false, -1, []string{"abc", ""}, `CREATE TABLE x(c1 TEXT,c2 TEXT)`},
+		{true, 3, []string{"abc", ""}, `CREATE TABLE x("abc" TEXT,c2 TEXT,c3 TEXT)`},
+		{true, -1, []string{"abc", "def"}, `CREATE TABLE x("abc" TEXT,"def" TEXT)`},
+		{true, 1, []string{"abc", "def"}, `CREATE TABLE x("abc" TEXT)`},
+	}
+	for _, tt := range tests {
+		t.Run(tt.want, func(t *testing.T) {
+			if got := getSchema(tt.header, tt.columns, tt.row); got != tt.want {
+				t.Errorf("getSchema() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

ext/csv/testdata/eurofxref.csv

@@ -0,0 +1,258 @@
+Date,USD,JPY,BGN,CYP,CZK,DKK,EEK,GBP,HUF,LTL,LVL,MTL,PLN,ROL,RON,SEK,SIT,SKK,CHF,ISK,NOK,HRK,RUB,TRL,TRY,AUD,BRL,CAD,CNY,HKD,IDR,ILS,INR,KRW,MXN,MYR,NZD,PHP,SGD,THB,ZAR,
+2022-12-30,1.0666,140.66,1.9558,N/A,24.116,7.4365,N/A,0.88693,400.87,N/A,N/A,N/A,4.6808,N/A,4.9495,11.1218,N/A,N/A,0.9847,151.5,10.5138,7.5365,N/A,N/A,19.9649,1.5693,5.6386,1.444,7.3582,8.3163,16519.82,3.7554,88.171,1344.09,20.856,4.6984,1.6798,59.32,1.43,36.835,18.0986,
+2022-12-29,1.0649,142.24,1.9558,N/A,24.191,7.4365,N/A,0.88549,399.6,N/A,N/A,N/A,4.6855,N/A,4.9493,11.158,N/A,N/A,0.984,152.5,10.55,7.5365,N/A,N/A,19.934,1.5859,5.5351,1.4475,7.4151,8.2994,16680.38,3.7575,88.2295,1350.18,20.651,4.7106,1.6887,59.367,1.436,36.877,18.1967,
+2022-12-28,1.064,142.21,1.9558,N/A,24.252,7.4365,N/A,0.88058,403.3,N/A,N/A,N/A,4.7008,N/A,4.946,11.1038,N/A,N/A,0.9863,151.9,10.4495,7.5365,N/A,N/A,19.9144,1.566,5.6109,1.4361,7.4224,8.2931,16765.93,3.7526,88.0943,1348.59,20.6856,4.7055,1.6772,59.613,1.4323,36.953,18.289,
+2022-12-27,1.0624,141.68,1.9558,N/A,24.26,7.4366,N/A,0.88333,401.65,N/A,N/A,N/A,4.6683,N/A,4.927,11.1285,N/A,N/A,0.9885,152.3,10.4895,7.5375,N/A,N/A,19.8799,1.577,5.6035,1.4384,7.3994,8.2874,16620.58,3.7278,88.0808,1349.85,20.5515,4.699,1.6916,59.356,1.43,36.775,18.3181,
+2022-12-23,1.0622,140.86,1.9558,N/A,24.247,7.4364,N/A,0.8803,400.68,N/A,N/A,N/A,4.6423,N/A,4.9056,11.1045,N/A,N/A,0.9867,152.3,10.4448,7.537,N/A,N/A,19.843,1.5857,5.4834,1.4433,7.4198,8.2878,16569.18,3.704,87.958,1359.5,20.7115,4.7002,1.6887,58.623,1.4337,36.842,18.1048,
+2022-12-22,1.0633,140.42,1.9558,N/A,24.215,7.4367,N/A,0.88243,402.13,N/A,N/A,N/A,4.6443,N/A,4.8993,11.05,N/A,N/A,0.9852,153.3,10.4123,7.538,N/A,N/A,19.8553,1.5804,5.5386,1.4484,7.4229,8.2883,16525.91,3.6942,88.0365,1361.75,20.8485,4.7051,1.6918,58.705,1.4356,36.849,18.2238,
+2022-12-21,1.0636,140.29,1.9558,N/A,24.218,7.438,N/A,0.87651,402.93,N/A,N/A,N/A,4.6665,N/A,4.8937,11.0623,N/A,N/A,0.9836,152.1,10.4309,7.5419,N/A,N/A,19.8541,1.5859,5.4913,1.4475,7.4219,8.2902,16573.77,3.6989,88.109,1367.63,20.9919,4.7197,1.685,58.556,1.4366,36.907,18.3529,
+2022-12-20,1.0599,140.58,1.9558,N/A,24.181,7.4388,N/A,0.8753,403.88,N/A,N/A,N/A,4.6757,N/A,4.9125,11.0615,N/A,N/A,0.9854,151.5,10.5098,7.5471,N/A,N/A,19.7744,1.5972,5.6234,1.4451,7.39,8.2488,16537.09,3.6759,87.6649,1363.73,20.9355,4.6991,1.6816,58.549,1.4347,36.853,18.4239,
+2022-12-19,1.0598,144.65,1.9558,N/A,24.233,7.4382,N/A,0.87118,403.18,N/A,N/A,N/A,4.6853,N/A,4.9107,11.0063,N/A,N/A,0.9884,151.9,10.5025,7.5395,N/A,N/A,19.7676,1.5794,5.6327,1.4472,7.3901,8.2428,16506.72,3.6551,87.5321,1377.17,20.9743,4.6912,1.6632,58.649,1.4378,36.923,18.3074,
+2022-12-16,1.0619,145.53,1.9558,N/A,24.262,7.4379,N/A,0.87233,407.1,N/A,N/A,N/A,4.6925,N/A,4.9213,11.0153,N/A,N/A,0.9879,150.1,10.4833,7.5385,N/A,N/A,19.8039,1.5866,5.6233,1.4506,7.4037,8.2632,16575.47,3.6689,87.824,1389.7,21.0634,4.6984,1.6687,58.967,1.4413,37.145,18.6708,
+2022-12-15,1.0621,145.07,1.9558,N/A,24.27,7.4387,N/A,0.86194,406.4,N/A,N/A,N/A,4.689,N/A,4.922,10.898,N/A,N/A,0.9862,150.9,10.4013,7.5395,N/A,N/A,19.806,1.5695,5.6247,1.4443,7.4007,8.2551,16591.4,3.6388,87.9355,1393.97,20.9431,4.6918,1.6628,59.297,1.4406,37.12,18.3599,
+2022-12-14,1.0649,143.68,1.9558,N/A,24.276,7.4392,N/A,0.86118,406.63,N/A,N/A,N/A,4.681,N/A,4.9248,10.8638,N/A,N/A,0.9865,150.9,10.362,7.538,N/A,N/A,19.8579,1.551,5.6842,1.4441,7.4009,8.2751,16599.51,3.6327,87.8435,1379.99,20.8635,4.6765,1.6508,59.326,1.4349,36.851,18.2563,
+2022-12-13,1.0545,144.85,1.9558,N/A,24.287,7.4391,N/A,0.85753,409.65,N/A,N/A,N/A,4.6938,N/A,4.9298,10.8965,N/A,N/A,0.9869,151.1,10.4679,7.5495,N/A,N/A,19.6649,1.5553,5.5784,1.4341,7.3637,8.2033,16521.81,3.6266,87.2965,1378.75,20.9435,4.6704,1.6464,58.852,1.4288,36.707,18.6855,
+2022-12-12,1.0562,144.86,1.9558,N/A,24.307,7.4379,N/A,0.86006,416.78,N/A,N/A,N/A,4.6923,N/A,4.9318,10.9075,N/A,N/A,0.9855,150.7,10.5548,7.554,N/A,N/A,19.6913,1.5625,5.556,1.4428,7.367,8.2103,16524.63,3.6232,87.253,1377.93,20.9047,4.6652,1.6523,58.788,1.4284,36.708,18.4697,
+2022-12-09,1.0559,143.3,1.9558,N/A,24.293,7.4379,N/A,0.8595,417.53,N/A,N/A,N/A,4.6869,N/A,4.9224,10.9188,N/A,N/A,0.9856,149.5,10.5345,7.555,N/A,N/A,19.6872,1.5553,5.5457,1.438,7.3475,8.2169,16453.46,3.6128,86.9535,1373.94,20.849,4.6512,1.6482,58.47,1.426,36.656,18.2358,
+2022-12-08,1.0519,143.75,1.9558,N/A,24.324,7.4382,N/A,0.86258,417.66,N/A,N/A,N/A,4.6853,N/A,4.9131,10.906,N/A,N/A,0.9889,149.5,10.488,7.5553,N/A,N/A,19.6114,1.559,5.488,1.4307,7.3324,8.1889,16423.92,3.6206,86.6755,1387.06,20.6989,4.6257,1.6547,58.233,1.4256,36.559,18.0225,
+2022-12-07,1.0529,144.44,1.9558,N/A,24.322,7.4382,N/A,0.86408,410.63,N/A,N/A,N/A,4.7003,N/A,4.918,10.919,N/A,N/A,0.9893,148.7,10.5255,7.5525,N/A,N/A,19.6256,1.5728,5.5023,1.4387,7.3476,8.1997,16465.17,3.626,86.692,1390.87,20.7534,4.6301,1.6573,58.432,1.4286,36.904,18.1353,
+2022-12-06,1.0516,143.33,1.9558,N/A,24.316,7.438,N/A,0.8617,415.08,N/A,N/A,N/A,4.6975,N/A,4.913,10.889,N/A,N/A,0.9872,148.9,10.4408,7.5563,N/A,N/A,19.601,1.5625,5.5113,1.4326,7.3494,8.1813,16441.49,3.5831,86.6485,1386.39,20.6884,4.6223,1.6583,58.782,1.4263,36.827,18.2068,
+2022-12-05,1.0587,143.07,1.9558,N/A,24.351,7.4369,N/A,0.86085,412.13,N/A,N/A,N/A,4.695,N/A,4.9215,10.8931,N/A,N/A,0.9893,148.9,10.3366,7.551,N/A,N/A,19.7326,1.5542,5.5491,1.4198,7.3573,8.2236,16332.36,3.5856,86.5249,1370.87,20.7295,4.6255,1.6498,59.245,1.4271,36.732,18.2038,
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+2022-01-04,1.1279,131.17,1.9558,N/A,24.745,7.4378,N/A,0.83618,365.12,N/A,N/A,N/A,4.5667,N/A,4.9481,10.2808,N/A,N/A,1.0355,147.8,10.0138,7.5185,84.9202,N/A,15.1384,1.5682,6.4174,1.4382,7.1924,8.7919,16199.73,3.4909,84.2055,1352.91,23.1808,4.7214,1.6668,57.988,1.531,37.582,18.108,
+2022-01-03,1.1355,130.56,1.9558,N/A,24.818,7.4382,N/A,0.84135,367.71,N/A,N/A,N/A,4.5895,N/A,4.9483,10.2958,N/A,N/A,1.0372,147.6,10.0013,7.519,84.5313,N/A,15.0777,1.5691,6.3539,1.442,7.2174,8.8541,16202.02,3.5139,84.3949,1354.4,23.2259,4.7379,1.6651,58.051,1.5333,37.665,17.9661,

ext/lines/lines.go

@@ -0,0 +1,128 @@
+// Package lines provides a virtual table to read large files line-by-line.
+package lines
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+	"math"
+	"os"
+
+	"github.com/ncruces/go-sqlite3"
+)
+
+// Register registers the lines and lines_read virtual tables.
+// The lines virtual table reads from a database blob or text.
+// The lines_read virtual table reads from a file or an [io.ReaderAt].
+func Register(db *sqlite3.Conn) {
+	sqlite3.CreateModule[lines](db, "lines", nil,
+		func(db *sqlite3.Conn, _, _, _ string, _ ...string) (lines, error) {
+			err := db.DeclareVtab(`CREATE TABLE x(line TEXT, data HIDDEN)`)
+			db.VtabConfig(sqlite3.VTAB_INNOCUOUS)
+			return false, err
+		})
+	sqlite3.CreateModule[lines](db, "lines_read", nil,
+		func(db *sqlite3.Conn, _, _, _ string, _ ...string) (lines, error) {
+			err := db.DeclareVtab(`CREATE TABLE x(line TEXT, data HIDDEN)`)
+			db.VtabConfig(sqlite3.VTAB_DIRECTONLY)
+			return true, err
+		})
+}
+
+type lines bool
+
+func (l lines) BestIndex(idx *sqlite3.IndexInfo) error {
+	for i, cst := range idx.Constraint {
+		if cst.Column == 1 && cst.Op == sqlite3.INDEX_CONSTRAINT_EQ && cst.Usable {
+			idx.ConstraintUsage[i] = sqlite3.IndexConstraintUsage{
+				Omit:      true,
+				ArgvIndex: 1,
+			}
+			idx.EstimatedCost = 1e6
+			idx.EstimatedRows = 100
+			return nil
+		}
+	}
+	return sqlite3.CONSTRAINT
+}
+
+func (l lines) Open() (sqlite3.VTabCursor, error) {
+	return &cursor{reader: bool(l)}, nil
+}
+
+type cursor struct {
+	scanner *bufio.Scanner
+	closer  io.Closer
+	rowID   int64
+	eof     bool
+	reader  bool
+}
+
+func (c *cursor) Close() (err error) {
+	if c.closer != nil {
+		err = c.closer.Close()
+		c.closer = nil
+	}
+	return err
+}
+
+func (c *cursor) EOF() bool {
+	return c.eof
+}
+
+func (c *cursor) Next() error {
+	c.rowID++
+	c.eof = !c.scanner.Scan()
+	return c.scanner.Err()
+}
+
+func (c *cursor) RowID() (int64, error) {
+	return c.rowID, nil
+}
+
+func (c *cursor) Column(ctx *sqlite3.Context, n int) error {
+	if n == 0 {
+		ctx.ResultRawText(c.scanner.Bytes())
+	}
+	return nil
+}
+
+func (c *cursor) Filter(idxNum int, idxStr string, arg ...sqlite3.Value) error {
+	if err := c.Close(); err != nil {
+		return err
+	}
+
+	var r io.Reader
+	data := arg[0]
+	typ := data.Type()
+	if c.reader {
+		switch typ {
+		case sqlite3.NULL:
+			if p, ok := data.Pointer().(io.ReaderAt); ok {
+				r = io.NewSectionReader(p, 0, math.MaxInt64)
+			}
+		case sqlite3.TEXT:
+			f, err := os.Open(data.Text())
+			if err != nil {
+				return err
+			}
+			c.closer = f
+			r = f
+		}
+	} else {
+		switch typ {
+		case sqlite3.TEXT:
+			r = bytes.NewReader(data.RawText())
+		case sqlite3.BLOB:
+			r = bytes.NewReader(data.RawBlob())
+		}
+	}
+
+	if r == nil {
+		return fmt.Errorf("lines: unsupported argument:%.0w %v", sqlite3.MISMATCH, typ)
+	}
+	c.scanner = bufio.NewScanner(r)
+	c.rowID = 0
+	return c.Next()
+}

ext/lines/lines_test.go

@@ -0,0 +1,186 @@
+package lines_test
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"log"
+	"os"
+	"strings"
+	"testing"
+
+	"github.com/ncruces/go-sqlite3"
+	"github.com/ncruces/go-sqlite3/driver"
+	_ "github.com/ncruces/go-sqlite3/embed"
+	"github.com/ncruces/go-sqlite3/ext/lines"
+)
+
+func Example() {
+	db, err := driver.Open(":memory:", func(c *sqlite3.Conn) error {
+		lines.Register(c)
+		return nil
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	// https://storage.googleapis.com/quickdraw_dataset/full/simplified/calendar.ndjson
+	f, err := os.Open("calendar.ndjson")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer f.Close()
+
+	rows, err := db.Query(`
+		SELECT
+			line ->> '$.countrycode' as countrycode,
+			COUNT(*)
+  		FROM lines_read(?)
+  		GROUP BY 1
+  		ORDER BY 2 DESC
+  		LIMIT 5`,
+		sqlite3.Pointer(f))
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer rows.Close()
+
+	var countrycode sql.RawBytes
+	var count int
+	for rows.Next() {
+		err := rows.Scan(&countrycode, &count)
+		if err != nil {
+			log.Fatal(err)
+		}
+		fmt.Printf("%s: %d\n", countrycode, count)
+	}
+	if err := rows.Err(); err != nil {
+		log.Fatal(err)
+	}
+	// Sample output:
+	// US: 141001
+	// GB: 22560
+	// CA: 11759
+	// RU: 9250
+	// DE: 8748
+}
+
+func Test_lines(t *testing.T) {
+	t.Parallel()
+
+	db, err := driver.Open(":memory:", func(c *sqlite3.Conn) error {
+		lines.Register(c)
+		return nil
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	const data = "line 1\nline 2\nline 3"
+
+	rows, err := db.Query(`SELECT rowid, line FROM lines(?)`, data)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var id int64
+		var line string
+		err := rows.Scan(&id, &line)
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+}
+
+func Test_lines_error(t *testing.T) {
+	t.Parallel()
+
+	db, err := driver.Open(":memory:", func(c *sqlite3.Conn) error {
+		lines.Register(c)
+		return nil
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	_, err = db.Exec(`SELECT rowid, line FROM lines(?)`, nil)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	_, err = db.Exec(`SELECT rowid, line FROM lines_read(?)`, "xpto")
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+}
+
+func Test_lines_read(t *testing.T) {
+	t.Parallel()
+
+	db, err := driver.Open(":memory:", func(c *sqlite3.Conn) error {
+		lines.Register(c)
+		return nil
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	const data = "line 1\nline 2\nline 3"
+
+	rows, err := db.Query(`SELECT rowid, line FROM lines_read(?)`,
+		sqlite3.Pointer(strings.NewReader(data)))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var id int64
+		var line string
+		err := rows.Scan(&id, &line)
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+}
+
+func Test_lines_test(t *testing.T) {
+	t.Parallel()
+
+	db, err := driver.Open(":memory:", func(c *sqlite3.Conn) error {
+		lines.Register(c)
+		return nil
+	})
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	rows, err := db.Query(`SELECT rowid, line FROM lines_read(?)`, "lines_test.go")
+	if errors.Is(err, os.ErrNotExist) {
+		t.Skip(err)
+	}
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var id int64
+		var line string
+		err := rows.Scan(&id, &line)
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+}

ext/pivot/pivot.go

@@ -0,0 +1,267 @@
+// Package pivot implements a pivot virtual table.
+//
+// https://github.com/jakethaw/pivot_vtab
+package pivot
+
+import (
+	"errors"
+	"fmt"
+	"strings"
+
+	"github.com/ncruces/go-sqlite3"
+)
+
+// Register registers the pivot virtual table.
+func Register(db *sqlite3.Conn) {
+	sqlite3.CreateModule(db, "pivot", declare, declare)
+}
+
+type table struct {
+	db   *sqlite3.Conn
+	scan string
+	cell string
+	keys []string
+	cols []*sqlite3.Value
+}
+
+func declare(db *sqlite3.Conn, _, _, _ string, arg ...string) (_ *table, err error) {
+	if len(arg) != 3 {
+		return nil, fmt.Errorf("pivot: wrong number of arguments")
+	}
+
+	table := &table{db: db}
+	defer func() {
+		if err != nil {
+			table.Close()
+		}
+	}()
+
+	var sep string
+	var create strings.Builder
+	create.WriteString("CREATE TABLE x(")
+
+	// Row key query.
+	table.scan = "SELECT * FROM\n" + arg[0]
+	stmt, _, err := db.Prepare(table.scan)
+	if err != nil {
+		return nil, err
+	}
+	defer stmt.Close()
+
+	table.keys = make([]string, stmt.ColumnCount())
+	for i := range table.keys {
+		name := sqlite3.QuoteIdentifier(stmt.ColumnName(i))
+		table.keys[i] = name
+		create.WriteString(sep)
+		create.WriteString(name)
+		sep = ","
+	}
+	stmt.Close()
+
+	// Column definition query.
+	stmt, _, err = db.Prepare("SELECT * FROM\n" + arg[1])
+	if err != nil {
+		return nil, err
+	}
+
+	if stmt.ColumnCount() != 2 {
+		return nil, fmt.Errorf("pivot: column definition query expects 2 result columns")
+	}
+	for stmt.Step() {
+		name := sqlite3.QuoteIdentifier(stmt.ColumnText(1))
+		table.cols = append(table.cols, stmt.ColumnValue(0).Dup())
+		create.WriteString(",")
+		create.WriteString(name)
+	}
+	stmt.Close()
+
+	// Pivot cell query.
+	table.cell = "SELECT * FROM\n" + arg[2]
+	stmt, _, err = db.Prepare(table.cell)
+	if err != nil {
+		return nil, err
+	}
+
+	if stmt.ColumnCount() != 1 {
+		return nil, fmt.Errorf("pivot: cell query expects 1 result columns")
+	}
+	if stmt.BindCount() != len(table.keys)+1 {
+		return nil, fmt.Errorf("pivot: cell query expects %d bound parameters", len(table.keys)+1)
+	}
+
+	create.WriteByte(')')
+	err = db.DeclareVtab(create.String())
+	if err != nil {
+		return nil, err
+	}
+	return table, nil
+}
+
+func (t *table) Close() error {
+	for i := range t.cols {
+		t.cols[i].Close()
+	}
+	return nil
+}
+
+func (t *table) BestIndex(idx *sqlite3.IndexInfo) error {
+	var idxStr strings.Builder
+	idxStr.WriteString(t.scan)
+
+	argvIndex := 1
+	sep := " WHERE "
+	for i, cst := range idx.Constraint {
+		if !cst.Usable || !(0 <= cst.Column && cst.Column < len(t.keys)) {
+			continue
+		}
+
+		var op string
+		switch cst.Op {
+		case sqlite3.INDEX_CONSTRAINT_EQ:
+			op = "="
+		case sqlite3.INDEX_CONSTRAINT_LT:
+			op = "<"
+		case sqlite3.INDEX_CONSTRAINT_GT:
+			op = ">"
+		case sqlite3.INDEX_CONSTRAINT_LE:
+			op = "<="
+		case sqlite3.INDEX_CONSTRAINT_GE:
+			op = ">="
+		case sqlite3.INDEX_CONSTRAINT_NE:
+			op = "<>"
+		case sqlite3.INDEX_CONSTRAINT_MATCH:
+			op = "MATCH"
+		case sqlite3.INDEX_CONSTRAINT_LIKE:
+			op = "LIKE"
+		case sqlite3.INDEX_CONSTRAINT_GLOB:
+			op = "GLOB"
+		case sqlite3.INDEX_CONSTRAINT_REGEXP:
+			op = "REGEXP"
+		case sqlite3.INDEX_CONSTRAINT_IS, sqlite3.INDEX_CONSTRAINT_ISNULL:
+			op = "IS"
+		case sqlite3.INDEX_CONSTRAINT_ISNOT, sqlite3.INDEX_CONSTRAINT_ISNOTNULL:
+			op = "IS NOT"
+		default:
+			continue
+		}
+
+		idxStr.WriteString(sep)
+		idxStr.WriteString(t.keys[cst.Column])
+		idxStr.WriteString(" ")
+		idxStr.WriteString(op)
+		idxStr.WriteString(" ?")
+
+		idx.ConstraintUsage[i] = sqlite3.IndexConstraintUsage{
+			ArgvIndex: argvIndex,
+			Omit:      true,
+		}
+		sep = " AND "
+		argvIndex++
+	}
+
+	sep = " ORDER BY "
+	idx.OrderByConsumed = true
+	for _, ord := range idx.OrderBy {
+		if !(0 <= ord.Column && ord.Column < len(t.keys)) {
+			idx.OrderByConsumed = false
+			continue
+		}
+		idxStr.WriteString(sep)
+		idxStr.WriteString(t.keys[ord.Column])
+		if ord.Desc {
+			idxStr.WriteString(" DESC")
+		}
+		sep = ","
+	}
+
+	idx.EstimatedCost = 1e9 / float64(argvIndex)
+	idx.IdxStr = idxStr.String()
+	return nil
+}
+
+func (t *table) Open() (sqlite3.VTabCursor, error) {
+	return &cursor{table: t}, nil
+}
+
+func (t *table) Rename(new string) error {
+	return nil
+}
+
+type cursor struct {
+	table *table
+	scan  *sqlite3.Stmt
+	cell  *sqlite3.Stmt
+	rowID int64
+}
+
+func (c *cursor) Close() error {
+	return errors.Join(c.scan.Close(), c.cell.Close())
+}
+
+func (c *cursor) Filter(idxNum int, idxStr string, arg ...sqlite3.Value) error {
+	err := c.scan.Close()
+	if err != nil {
+		return err
+	}
+
+	c.scan, _, err = c.table.db.Prepare(idxStr)
+	if err != nil {
+		return err
+	}
+	for i, arg := range arg {
+		err := c.scan.BindValue(i+1, arg)
+		if err != nil {
+			return err
+		}
+	}
+
+	if c.cell == nil {
+		c.cell, _, err = c.table.db.Prepare(c.table.cell)
+		if err != nil {
+			return err
+		}
+	}
+
+	c.rowID = 0
+	return c.Next()
+}
+
+func (c *cursor) Next() error {
+	if c.scan.Step() {
+		count := c.scan.ColumnCount()
+		for i := 0; i < count; i++ {
+			err := c.cell.BindValue(i+1, c.scan.ColumnValue(i))
+			if err != nil {
+				return err
+			}
+		}
+		c.rowID++
+	}
+	return c.scan.Err()
+}
+
+func (c *cursor) EOF() bool {
+	return !c.scan.Busy()
+}
+
+func (c *cursor) RowID() (int64, error) {
+	return c.rowID, nil
+}
+
+func (c *cursor) Column(ctx *sqlite3.Context, col int) error {
+	count := c.scan.ColumnCount()
+	if col < count {
+		ctx.ResultValue(c.scan.ColumnValue(col))
+		return nil
+	}
+
+	err := c.cell.BindValue(count+1, *c.table.cols[col-count])
+	if err != nil {
+		return err
+	}
+
+	if c.cell.Step() {
+		ctx.ResultValue(c.cell.ColumnValue(0))
+	}
+	return c.cell.Reset()
+}

ext/pivot/pivot_test.go

@@ -0,0 +1,219 @@
+package pivot_test
+
+import (
+	"fmt"
+	"log"
+	"strings"
+	"testing"
+
+	"github.com/ncruces/go-sqlite3"
+	_ "github.com/ncruces/go-sqlite3/embed"
+	"github.com/ncruces/go-sqlite3/ext/pivot"
+)
+
+// https://antonz.org/sqlite-pivot-table/
+func Example() {
+	db, err := sqlite3.Open(":memory:")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	pivot.Register(db)
+
+	err = db.Exec(`
+		CREATE TABLE sales(product TEXT, year INT, income DECIMAL);
+		INSERT INTO  sales(product, year, income) VALUES
+			('alpha', 2020, 100),
+			('alpha', 2021, 120),
+			('alpha', 2022, 130),
+			('alpha', 2023, 140),
+			('beta',  2020, 10),
+			('beta',  2021, 20),
+			('beta',  2022, 40),
+			('beta',  2023, 80),
+			('gamma', 2020, 80),
+			('gamma', 2021, 75),
+			('gamma', 2022, 78),
+			('gamma', 2023, 80);
+	`)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	err = db.Exec(`
+		CREATE VIRTUAL TABLE v_sales USING pivot(
+			-- rows
+			(SELECT DISTINCT product FROM sales),
+			-- columns
+			(SELECT DISTINCT year, year FROM sales),
+			-- cells
+			(SELECT sum(income) FROM sales WHERE product = ? AND year = ?)
+		)`)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	stmt, _, err := db.Prepare(`SELECT * FROM v_sales`)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer stmt.Close()
+
+	cols := make([]string, stmt.ColumnCount())
+	for i := range cols {
+		cols[i] = stmt.ColumnName(i)
+	}
+	fmt.Println(pretty(cols))
+	for stmt.Step() {
+		for i := range cols {
+			cols[i] = stmt.ColumnText(i)
+		}
+		fmt.Println(pretty(cols))
+	}
+	if err := stmt.Reset(); err != nil {
+		log.Fatal(err)
+	}
+
+	// Output:
+	// product 2020    2021    2022    2023
+	// alpha   100     120     130     140
+	// beta    10      20      40      80
+	// gamma   80      75      78      80
+}
+
+func TestRegister(t *testing.T) {
+	t.Parallel()
+
+	db, err := sqlite3.Open(":memory:")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	pivot.Register(db)
+
+	err = db.Exec(`
+		CREATE TABLE r AS
+			SELECT 1 id UNION SELECT 2 UNION SELECT 3;
+
+		CREATE TABLE c(
+			id   INTEGER PRIMARY KEY,
+			name TEXT
+		);
+		INSERT INTO c (name) VALUES
+			('a'),('b'),('c'),('d');
+
+		CREATE TABLE x(
+			r_id INT,
+			c_id INT,
+			val  TEXT
+		);
+		INSERT INTO x (r_id, c_id, val)
+			SELECT r.id, c.id, c.name || r.id
+			FROM c, r;				
+	`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = db.Exec(`
+		CREATE VIRTUAL TABLE v_x USING pivot(
+			-- rows
+			(SELECT id r_id FROM r),
+			-- columns
+			(SELECT id c_id, name FROM c),
+			-- cells
+			(SELECT val FROM x WHERE r_id = ?1 AND c_id = ?2)
+		)`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	stmt, _, err := db.Prepare(`SELECT * FROM v_x WHERE rowid <> 0 AND r_id <> 1 ORDER BY rowid, r_id DESC LIMIT 1`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer stmt.Close()
+
+	if stmt.Step() {
+		if got := stmt.ColumnInt(0); got != 3 {
+			t.Errorf("got %d, want 3", got)
+		}
+	}
+}
+
+func TestRegister_errors(t *testing.T) {
+	t.Parallel()
+
+	db, err := sqlite3.Open(":memory:")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	pivot.Register(db)
+
+	err = db.Exec(`CREATE VIRTUAL TABLE pivot USING pivot()`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE split_date USING pivot(SELECT 1, SELECT 2, SELECT 3)`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE split_date USING pivot((SELECT 1), SELECT 2, SELECT 3)`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE split_date USING pivot((SELECT 1), (SELECT 2), SELECT 3)`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE split_date USING pivot((SELECT 1), (SELECT 1, 2), SELECT 3)`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE split_date USING pivot((SELECT 1), (SELECT 1, 2), (SELECT 3, 4))`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE split_date USING pivot((SELECT 1), (SELECT 1, 2), (SELECT 3))`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+}
+
+func pretty(cols []string) string {
+	var buf strings.Builder
+	for i, s := range cols {
+		if i != 0 {
+			buf.WriteByte(' ')
+		}
+		for buf.Len()%8 != 0 {
+			buf.WriteByte(' ')
+		}
+		buf.WriteString(s)
+	}
+	return buf.String()
+}

ext/statement/stmt.go

@@ -0,0 +1,210 @@
+// Package statement defines table-valued functions natively using SQL.
+//
+// https://github.com/0x09/sqlite-statement-vtab
+package statement
+
+import (
+	"encoding/json"
+	"fmt"
+	"strconv"
+	"strings"
+	"unsafe"
+
+	"github.com/ncruces/go-sqlite3"
+)
+
+// Register registers the statement virtual table.
+func Register(db *sqlite3.Conn) {
+	sqlite3.CreateModule(db, "statement", declare, declare)
+}
+
+type table struct {
+	stmt  *sqlite3.Stmt
+	sql   string
+	inuse bool
+}
+
+func declare(db *sqlite3.Conn, _, _, _ string, arg ...string) (*table, error) {
+	if len(arg) != 1 {
+		return nil, fmt.Errorf("statement: wrong number of arguments")
+	}
+
+	sql := "SELECT * FROM\n" + arg[0]
+
+	stmt, _, err := db.Prepare(sql)
+	if err != nil {
+		return nil, err
+	}
+
+	var sep string
+	var str strings.Builder
+	str.WriteString("CREATE TABLE x(")
+	outputs := stmt.ColumnCount()
+	for i := 0; i < outputs; i++ {
+		name := sqlite3.QuoteIdentifier(stmt.ColumnName(i))
+		str.WriteString(sep)
+		str.WriteString(name)
+		str.WriteString(" ")
+		str.WriteString(stmt.ColumnDeclType(i))
+		sep = ","
+	}
+	inputs := stmt.BindCount()
+	for i := 1; i <= inputs; i++ {
+		str.WriteString(sep)
+		name := stmt.BindName(i)
+		if name == "" {
+			str.WriteString("[")
+			str.WriteString(strconv.Itoa(i))
+			str.WriteString("] HIDDEN")
+		} else {
+			str.WriteString(sqlite3.QuoteIdentifier(name[1:]))
+			str.WriteString(" HIDDEN")
+		}
+		sep = ","
+	}
+	str.WriteByte(')')
+
+	err = db.DeclareVtab(str.String())
+	if err != nil {
+		stmt.Close()
+		return nil, err
+	}
+
+	return &table{sql: sql, stmt: stmt}, nil
+}
+
+func (t *table) Close() error {
+	return t.stmt.Close()
+}
+
+func (t *table) BestIndex(idx *sqlite3.IndexInfo) error {
+	idx.EstimatedCost = 1000
+
+	var argvIndex = 1
+	var needIndex bool
+	var listIndex []int
+	outputs := t.stmt.ColumnCount()
+	for i, cst := range idx.Constraint {
+		// Skip if this is a constraint on one of our output columns.
+		if cst.Column < outputs {
+			continue
+		}
+
+		// A given query plan is only usable if all provided input columns
+		// are usable and have equal constraints only.
+		if !cst.Usable || cst.Op != sqlite3.INDEX_CONSTRAINT_EQ {
+			return sqlite3.CONSTRAINT
+		}
+
+		// The non-zero argvIdx values must be contiguous.
+		// If they're not, build a list and serialize it through IdxStr.
+		nextIndex := cst.Column - outputs + 1
+		idx.ConstraintUsage[i] = sqlite3.IndexConstraintUsage{
+			ArgvIndex: argvIndex,
+			Omit:      true,
+		}
+		if nextIndex != argvIndex {
+			needIndex = true
+		}
+		listIndex = append(listIndex, nextIndex)
+		argvIndex++
+	}
+
+	if needIndex {
+		buf, err := json.Marshal(listIndex)
+		if err != nil {
+			return err
+		}
+		idx.IdxStr = unsafe.String(&buf[0], len(buf))
+	}
+	return nil
+}
+
+func (t *table) Open() (sqlite3.VTabCursor, error) {
+	stmt := t.stmt
+	if !t.inuse {
+		t.inuse = true
+	} else {
+		var err error
+		stmt, _, err = t.stmt.Conn().Prepare(t.sql)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return &cursor{table: t, stmt: stmt}, nil
+}
+
+func (t *table) Rename(new string) error {
+	return nil
+}
+
+type cursor struct {
+	table *table
+	stmt  *sqlite3.Stmt
+	arg   []sqlite3.Value
+	rowID int64
+}
+
+func (c *cursor) Close() error {
+	if c.stmt == c.table.stmt {
+		c.table.inuse = false
+		c.stmt.ClearBindings()
+		return c.stmt.Reset()
+	}
+	return c.stmt.Close()
+}
+
+func (c *cursor) Filter(idxNum int, idxStr string, arg ...sqlite3.Value) error {
+	c.arg = arg
+	c.rowID = 0
+	c.stmt.ClearBindings()
+	if err := c.stmt.Reset(); err != nil {
+		return err
+	}
+
+	var list []int
+	if idxStr != "" {
+		buf := unsafe.Slice(unsafe.StringData(idxStr), len(idxStr))
+		err := json.Unmarshal(buf, &list)
+		if err != nil {
+			return err
+		}
+	}
+
+	for i, arg := range arg {
+		param := i + 1
+		if list != nil {
+			param = list[i]
+		}
+		err := c.stmt.BindValue(param, arg)
+		if err != nil {
+			return err
+		}
+	}
+	return c.Next()
+}
+
+func (c *cursor) Next() error {
+	if c.stmt.Step() {
+		c.rowID++
+	}
+	return c.stmt.Err()
+}
+
+func (c *cursor) EOF() bool {
+	return !c.stmt.Busy()
+}
+
+func (c *cursor) RowID() (int64, error) {
+	return c.rowID, nil
+}
+
+func (c *cursor) Column(ctx *sqlite3.Context, col int) error {
+	switch outputs := c.stmt.ColumnCount(); {
+	case col < outputs:
+		ctx.ResultValue(c.stmt.ColumnValue(col))
+	case col-outputs < len(c.arg):
+		ctx.ResultValue(c.arg[col-outputs])
+	}
+	return nil
+}

ext/statement/stmt_test.go

@@ -0,0 +1,145 @@
+package statement_test
+
+import (
+	"fmt"
+	"log"
+	"testing"
+
+	"github.com/ncruces/go-sqlite3"
+	_ "github.com/ncruces/go-sqlite3/embed"
+	"github.com/ncruces/go-sqlite3/ext/statement"
+)
+
+func Example() {
+	db, err := sqlite3.Open(":memory:")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	statement.Register(db)
+
+	err = db.Exec(`
+		CREATE VIRTUAL TABLE split_date USING statement((
+			SELECT
+				strftime('%Y', :date) AS year,
+				strftime('%m', :date) AS month,
+				strftime('%d', :date) AS day
+		))`)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	stmt, _, err := db.Prepare(`SELECT * FROM split_date('2022-02-22')`)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer stmt.Close()
+
+	if stmt.Step() {
+		fmt.Printf("Twosday was %d-%d-%d", stmt.ColumnInt(0), stmt.ColumnInt(1), stmt.ColumnInt(2))
+	}
+	if err := stmt.Reset(); err != nil {
+		log.Fatal(err)
+	}
+
+	// Output:
+	// Twosday was 2022-2-22
+}
+
+func TestRegister(t *testing.T) {
+	t.Parallel()
+
+	db, err := sqlite3.Open(":memory:")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	statement.Register(db)
+
+	err = db.Exec(`
+		CREATE VIRTUAL TABLE arguments USING statement((SELECT ? AS a, ? AS b, ? AS c))
+	`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = db.Exec(`
+		SELECT * from arguments WHERE [2] = 'y' AND [3] = 'z'
+	`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = db.Exec(`
+		CREATE VIRTUAL TABLE hypot USING statement((SELECT sqrt(:x * :x + :y * :y) AS hypotenuse))
+	`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	stmt, _, err := db.Prepare(`
+		SELECT x, y, * FROM hypot WHERE x = 3 AND y = 4
+	`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer stmt.Close()
+
+	if stmt.Step() {
+		x := stmt.ColumnInt(0)
+		y := stmt.ColumnInt(1)
+		hypot := stmt.ColumnInt(2)
+		if x != 3 || y != 4 || hypot != 5 {
+			t.Errorf("hypot(%d, %d) = %d", x, y, hypot)
+		}
+	}
+}
+
+func TestRegister_errors(t *testing.T) {
+	t.Parallel()
+
+	db, err := sqlite3.Open(":memory:")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	statement.Register(db)
+
+	err = db.Exec(`CREATE VIRTUAL TABLE split_date USING statement()`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE split_date USING statement(SELECT 1, SELECT 2)`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE split_date USING statement((SELECT 1, SELECT 2))`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE split_date USING statement((SELECT 1; SELECT 2))`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = db.Exec(`CREATE VIRTUAL TABLE split_date USING statement((CREATE TABLE x(val)))`)
+	if err == nil {
+		t.Fatal("want error")
+	} else {
+		t.Log(err)
+	}
+}

ext/stats/welford_test.go

@@ -6,6 +6,8 @@ import (
 )
 
 func Test_welford(t *testing.T) {
+	t.Parallel()
+
 	var s1, s2 welford
 
 	s1.enqueue(4)
@@ -38,6 +40,8 @@ func Test_welford(t *testing.T) {
 }
 
 func Test_covar(t *testing.T) {
+	t.Parallel()
+
 	var c1, c2 welford2
 
 	c1.enqueue(3, 70)
@@ -64,6 +68,8 @@ func Test_covar(t *testing.T) {
 }
 
 func Test_correlation(t *testing.T) {
+	t.Parallel()
+
 	var c welford2
 	c.enqueue(1, 3)
 	c.enqueue(2, 2)

ext/unicode/unicode.go

@@ -66,7 +66,7 @@ func RegisterCollation(db *sqlite3.Conn, locale, name string) error {
 
 func upper(ctx sqlite3.Context, arg ...sqlite3.Value) {
 	if len(arg) == 1 {
-		ctx.ResultBlob(bytes.ToUpper(arg[0].RawBlob()))
+		ctx.ResultRawText(bytes.ToUpper(arg[0].RawText()))
 		return
 	}
 	cs, ok := ctx.GetAuxData(1).(cases.Caser)
@@ -80,12 +80,12 @@ func upper(ctx sqlite3.Context, arg ...sqlite3.Value) {
 		ctx.SetAuxData(1, c)
 		cs = c
 	}
-	ctx.ResultBlob(cs.Bytes(arg[0].RawBlob()))
+	ctx.ResultRawText(cs.Bytes(arg[0].RawText()))
 }
 
 func lower(ctx sqlite3.Context, arg ...sqlite3.Value) {
 	if len(arg) == 1 {
-		ctx.ResultBlob(bytes.ToLower(arg[0].RawBlob()))
+		ctx.ResultRawText(bytes.ToLower(arg[0].RawText()))
 		return
 	}
 	cs, ok := ctx.GetAuxData(1).(cases.Caser)
@@ -99,7 +99,7 @@ func lower(ctx sqlite3.Context, arg ...sqlite3.Value) {
 		ctx.SetAuxData(1, c)
 		cs = c
 	}
-	ctx.ResultBlob(cs.Bytes(arg[0].RawBlob()))
+	ctx.ResultRawText(cs.Bytes(arg[0].RawText()))
 }
 
 func regex(ctx sqlite3.Context, arg ...sqlite3.Value) {
@@ -113,14 +113,14 @@ func regex(ctx sqlite3.Context, arg ...sqlite3.Value) {
 		re = r
 		ctx.SetAuxData(0, re)
 	}
-	ctx.ResultBool(re.Match(arg[1].RawBlob()))
+	ctx.ResultBool(re.Match(arg[1].RawText()))
 }
 
 func like(ctx sqlite3.Context, arg ...sqlite3.Value) {
 	escape := rune(-1)
 	if len(arg) == 3 {
 		var size int
-		b := arg[2].RawBlob()
+		b := arg[2].RawText()
 		escape, size = utf8.DecodeRune(b)
 		if size != len(b) {
 			ctx.ResultError(util.ErrorString("ESCAPE expression must be a single character"))
@@ -141,7 +141,7 @@ func like(ctx sqlite3.Context, arg ...sqlite3.Value) {
 		}
 		ctx.SetAuxData(0, re)
 	}
-	ctx.ResultBool(re.Match(arg[1].RawBlob()))
+	ctx.ResultBool(re.Match(arg[1].RawText()))
 }
 
 func like2regex(pattern string, escape rune) string {

ext/unicode/unicode_test.go

@@ -189,6 +189,8 @@ func TestRegister_error(t *testing.T) {
 }
 
 func Test_like2regex(t *testing.T) {
+	t.Parallel()
+
 	const prefix = `(?is)\A`
 	const sufix = `\z`
 	tests := []struct {

func.go

@@ -14,47 +14,49 @@ import (
 // This can be used to load schemas that contain
 // one or more unknown collating sequences.
 func (c *Conn) AnyCollationNeeded() {
-	c.call(c.api.anyCollation, uint64(c.handle), 0, 0)
+	c.call("sqlite3_anycollseq_init", uint64(c.handle), 0, 0)
 }
 
 // CreateCollation defines a new collating sequence.
 //
-// https://www.sqlite.org/c3ref/create_collation.html
+// https://sqlite.org/c3ref/create_collation.html
 func (c *Conn) CreateCollation(name string, fn func(a, b []byte) int) error {
+	defer c.arena.mark()()
 	namePtr := c.arena.string(name)
 	funcPtr := util.AddHandle(c.ctx, fn)
-	r := c.call(c.api.createCollation,
+	r := c.call("sqlite3_create_collation_go",
 		uint64(c.handle), uint64(namePtr), uint64(funcPtr))
-	if err := c.error(r); err != nil {
-		util.DelHandle(c.ctx, funcPtr)
-		return err
-	}
-	return nil
+	return c.error(r)
 }
 
 // CreateFunction defines a new scalar SQL function.
 //
-// https://www.sqlite.org/c3ref/create_function.html
-func (c *Conn) CreateFunction(name string, nArg int, flag FunctionFlag, fn func(ctx Context, arg ...Value)) error {
+// https://sqlite.org/c3ref/create_function.html
+func (c *Conn) CreateFunction(name string, nArg int, flag FunctionFlag, fn ScalarFunction) error {
+	defer c.arena.mark()()
 	namePtr := c.arena.string(name)
 	funcPtr := util.AddHandle(c.ctx, fn)
-	r := c.call(c.api.createFunction,
+	r := c.call("sqlite3_create_function_go",
 		uint64(c.handle), uint64(namePtr), uint64(nArg),
 		uint64(flag), uint64(funcPtr))
 	return c.error(r)
 }
 
+// ScalarFunction is the type of a scalar SQL function.
+type ScalarFunction func(ctx Context, arg ...Value)
+
 // CreateWindowFunction defines a new aggregate or aggregate window SQL function.
 // If fn returns a [WindowFunction], then an aggregate window function is created.
 // If fn returns an [io.Closer], it will be called to free resources.
 //
-// https://www.sqlite.org/c3ref/create_function.html
+// https://sqlite.org/c3ref/create_function.html
 func (c *Conn) CreateWindowFunction(name string, nArg int, flag FunctionFlag, fn func() AggregateFunction) error {
-	call := c.api.createAggregate
+	defer c.arena.mark()()
+	call := "sqlite3_create_aggregate_function_go"
 	namePtr := c.arena.string(name)
 	funcPtr := util.AddHandle(c.ctx, fn)
 	if _, ok := fn().(WindowFunction); ok {
-		call = c.api.createWindow
+		call = "sqlite3_create_window_function_go"
 	}
 	r := c.call(call,
 		uint64(c.handle), uint64(namePtr), uint64(nArg),
@@ -64,7 +66,7 @@ func (c *Conn) CreateWindowFunction(name string, nArg int, flag FunctionFlag, fn
 
 // AggregateFunction is the interface an aggregate function should implement.
 //
-// https://www.sqlite.org/appfunc.html
+// https://sqlite.org/appfunc.html
 type AggregateFunction interface {
 	// Step is invoked to add a row to the current window.
 	// The function arguments, if any, corresponding to the row being added are passed to Step.
@@ -76,7 +78,7 @@ type AggregateFunction interface {
 
 // WindowFunction is the interface an aggregate window function should implement.
 //
-// https://www.sqlite.org/windowfunctions.html
+// https://sqlite.org/windowfunctions.html
 type WindowFunction interface {
 	AggregateFunction
 
@@ -85,78 +87,76 @@ type WindowFunction interface {
 	Inverse(ctx Context, arg ...Value)
 }
 
-func callbackDestroy(ctx context.Context, mod api.Module, pApp uint32) {
+func destroyCallback(ctx context.Context, mod api.Module, pApp uint32) {
 	util.DelHandle(ctx, pApp)
 }
 
-func callbackCompare(ctx context.Context, mod api.Module, pApp, nKey1, pKey1, nKey2, pKey2 uint32) uint32 {
+func compareCallback(ctx context.Context, mod api.Module, pApp, nKey1, pKey1, nKey2, pKey2 uint32) uint32 {
 	fn := util.GetHandle(ctx, pApp).(func(a, b []byte) int)
 	return uint32(fn(util.View(mod, pKey1, uint64(nKey1)), util.View(mod, pKey2, uint64(nKey2))))
 }
 
-func callbackFunc(ctx context.Context, mod api.Module, pCtx, nArg, pArg uint32) {
+func funcCallback(ctx context.Context, mod api.Module, pCtx, nArg, pArg uint32) {
 	db := ctx.Value(connKey{}).(*Conn)
-	fn := callbackHandle(db, pCtx).(func(ctx Context, arg ...Value))
+	fn := userDataHandle(db, pCtx).(ScalarFunction)
 	fn(Context{db, pCtx}, callbackArgs(db, nArg, pArg)...)
 }
 
-func callbackStep(ctx context.Context, mod api.Module, pCtx, nArg, pArg uint32) {
+func stepCallback(ctx context.Context, mod api.Module, pCtx, nArg, pArg uint32) {
 	db := ctx.Value(connKey{}).(*Conn)
-	fn := callbackAggregate(db, pCtx, nil).(AggregateFunction)
+	fn := aggregateCtxHandle(db, pCtx, nil)
 	fn.Step(Context{db, pCtx}, callbackArgs(db, nArg, pArg)...)
 }
 
-func callbackFinal(ctx context.Context, mod api.Module, pCtx uint32) {
+func finalCallback(ctx context.Context, mod api.Module, pCtx uint32) {
 	var handle uint32
 	db := ctx.Value(connKey{}).(*Conn)
-	fn := callbackAggregate(db, pCtx, &handle).(AggregateFunction)
+	fn := aggregateCtxHandle(db, pCtx, &handle)
 	fn.Value(Context{db, pCtx})
 	if err := util.DelHandle(ctx, handle); err != nil {
 		Context{db, pCtx}.ResultError(err)
 	}
 }
 
-func callbackValue(ctx context.Context, mod api.Module, pCtx uint32) {
+func valueCallback(ctx context.Context, mod api.Module, pCtx uint32) {
 	db := ctx.Value(connKey{}).(*Conn)
-	fn := callbackAggregate(db, pCtx, nil).(AggregateFunction)
+	fn := aggregateCtxHandle(db, pCtx, nil)
 	fn.Value(Context{db, pCtx})
 }
 
-func callbackInverse(ctx context.Context, mod api.Module, pCtx, nArg, pArg uint32) {
+func inverseCallback(ctx context.Context, mod api.Module, pCtx, nArg, pArg uint32) {
 	db := ctx.Value(connKey{}).(*Conn)
-	fn := callbackAggregate(db, pCtx, nil).(WindowFunction)
+	fn := aggregateCtxHandle(db, pCtx, nil).(WindowFunction)
 	fn.Inverse(Context{db, pCtx}, callbackArgs(db, nArg, pArg)...)
 }
 
-func callbackHandle(db *Conn, pCtx uint32) any {
-	pApp := uint32(db.call(db.api.userData, uint64(pCtx)))
+func userDataHandle(db *Conn, pCtx uint32) any {
+	pApp := uint32(db.call("sqlite3_user_data", uint64(pCtx)))
 	return util.GetHandle(db.ctx, pApp)
 }
 
-func callbackAggregate(db *Conn, pCtx uint32, close *uint32) any {
-	// On close, we're getting rid of the handle.
+func aggregateCtxHandle(db *Conn, pCtx uint32, close *uint32) AggregateFunction {
+	// On close, we're getting rid of the aggregate.
 	// Don't allocate space to store it.
 	var size uint64
 	if close == nil {
 		size = ptrlen
 	}
-	ptr := uint32(db.call(db.api.aggregateCtx, uint64(pCtx), size))
+	ptr := uint32(db.call("sqlite3_aggregate_context", uint64(pCtx), size))
 
-	// Try loading the handle, if we already have one, or want a new one.
-	if ptr != 0 || size != 0 {
+	// If we already have an aggregate, return it.
+	if ptr != 0 {
 		if handle := util.ReadUint32(db.mod, ptr); handle != 0 {
-			fn := util.GetHandle(db.ctx, handle)
+			fn := util.GetHandle(db.ctx, handle).(AggregateFunction)
 			if close != nil {
 				*close = handle
 			}
-			if fn != nil {
-				return fn
-			}
+			return fn
 		}
 	}
 
-	// Create a new aggregate and store the handle.
-	fn := callbackHandle(db, pCtx).(func() AggregateFunction)()
+	// Create a new aggregate, and store it if needed.
+	fn := userDataHandle(db, pCtx).(func() AggregateFunction)()
 	if ptr != 0 {
 		util.WriteUint32(db.mod, ptr, util.AddHandle(db.ctx, fn))
 	}

func_test.go

@@ -74,7 +74,7 @@ func ExampleConn_CreateFunction() {
 	}
 
 	err = db.CreateFunction("upper", 1, sqlite3.DETERMINISTIC|sqlite3.INNOCUOUS, func(ctx sqlite3.Context, arg ...sqlite3.Value) {
-		ctx.ResultBlob(bytes.ToUpper(arg[0].RawBlob()))
+		ctx.ResultRawText(bytes.ToUpper(arg[0].RawText()))
 	})
 	if err != nil {
 		log.Fatal(err)
@@ -129,7 +129,7 @@ func ExampleContext_SetAuxData() {
 			ctx.SetAuxData(0, r)
 			re = r
 		}
-		ctx.ResultBool(re.Match(arg[1].RawBlob()))
+		ctx.ResultBool(re.Match(arg[1].RawText()))
 	})
 	if err != nil {
 		log.Fatal(err)

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/psanford/httpreadat v0.1.0
 	github.com/tetratelabs/wazero v1.5.0
 	golang.org/x/sync v0.5.0
-	golang.org/x/sys v0.14.0
+	golang.org/x/sys v0.15.0
 	golang.org/x/text v0.14.0
 )
 

go.sum

@@ -6,7 +6,7 @@ github.com/tetratelabs/wazero v1.5.0 h1:Yz3fZHivfDiZFUXnWMPUoiW7s8tC1sjdBtlJn08q
 github.com/tetratelabs/wazero v1.5.0/go.mod h1:0U0G41+ochRKoPKCJlh0jMg1CHkyfK8kDqiirMmKY8A=
 golang.org/x/sync v0.5.0 h1:60k92dhOjHxJkrqnwsfl8KuaHbn/5dl0lUPUklKo3qE=
 golang.org/x/sync v0.5.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sys v0.14.0 h1:Vz7Qs629MkJkGyHxUlRHizWJRG2j8fbQKjELVSNhy7Q=
-golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.15.0 h1:h48lPFYpsTvQJZF4EKyI4aLHaev3CxivZmv7yZig9pc=
+golang.org/x/sys v0.15.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=

go.work.sum

@@ -1,4 +1,3 @@
-github.com/ncruces/go-sqlite3 v0.9.1/go.mod h1:jFoUbaCDNUS1KN5ZgFxN7bgcWoWfO0EOKeik9QAHZ08=
 golang.org/x/mod v0.8.0 h1:LUYupSeNrTNCGzR/hVBk2NHZO4hXcVaW1k4Qx7rjPx8=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/tools v0.6.0 h1:BOw41kyTf3PuCW1pVQf8+Cyg8pMlkYB1oo9iJ6D/lKM=

gormlite/README.md

@@ -14,13 +14,4 @@ import (
 db, err := gorm.Open(gormlite.Open("gorm.db"), &gorm.Config{})
 ```
 
-Checkout [https://gorm.io](https://gorm.io) for details.
-
-### Foreign-key constraint activation
-
-Foreign-key constraint is disabled by default in SQLite. To activate it, use connection URL parameter:
-```go
-db, err := gorm.Open(gormlite.Open(
-	"file:gorm.db?_pragma=busy_timeout(10000)&_pragma=foreign_keys(1)"),
-	&gorm.Config{})
-```
+Checkout [https://gorm.io](https://gorm.io) for details.

gormlite/ddlmod.go

@@ -13,7 +13,7 @@ import (
 
 var (
 	sqliteSeparator    = "`|\"|'|\t"
-	indexRegexp        = regexp.MustCompile(fmt.Sprintf(`(?is)CREATE(?: UNIQUE)? INDEX [%v]?[\w\d-]+[%v]? ON (.*)$`, sqliteSeparator, sqliteSeparator))
+	indexRegexp        = regexp.MustCompile(fmt.Sprintf(`(?is)CREATE(?: UNIQUE)? INDEX [%v]?[\w\d-]+[%v]?(?s:.*?)ON (.*)$`, sqliteSeparator, sqliteSeparator))
 	tableRegexp        = regexp.MustCompile(fmt.Sprintf(`(?is)(CREATE TABLE [%v]?[\w\d-]+[%v]?)(?:\s*\((.*)\))?`, sqliteSeparator, sqliteSeparator))
 	separatorRegexp    = regexp.MustCompile(fmt.Sprintf("[%v]", sqliteSeparator))
 	columnsRegexp      = regexp.MustCompile(fmt.Sprintf(`[(,][%v]?(\w+)[%v]?`, sqliteSeparator, sqliteSeparator))

gormlite/ddlmod_test.go

@@ -97,6 +97,24 @@ func TestParseDDL(t *testing.T) {
 				},
 			},
 		},
+		{
+			"index with \n from .schema sqlite",
+			[]string{
+				"CREATE TABLE `test-d` (`field` integer NOT NULL)",
+				"CREATE INDEX `idx_uq`\n    ON `test-b`(`field`) WHERE field = 0",
+			},
+			1,
+			[]migrator.ColumnType{
+				{
+					NameValue:       sql.NullString{String: "field", Valid: true},
+					DataTypeValue:   sql.NullString{String: "integer", Valid: true},
+					ColumnTypeValue: sql.NullString{String: "integer", Valid: true},
+					PrimaryKeyValue: sql.NullBool{Bool: false, Valid: true},
+					UniqueValue:     sql.NullBool{Bool: false, Valid: true},
+					NullableValue:   sql.NullBool{Bool: false, Valid: true},
+				},
+			},
+		},
 	}
 
 	for _, p := range params {

gormlite/go.mod

@@ -3,14 +3,14 @@ module github.com/ncruces/go-sqlite3/gormlite
 go 1.21
 
 require (
-	github.com/ncruces/go-sqlite3 v0.9.1
+	github.com/ncruces/go-sqlite3 v0.10.5
 	gorm.io/gorm v1.25.5
 )
 
 require (
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jinzhu/now v1.1.5 // indirect
-	github.com/ncruces/julianday v0.1.5 // indirect
+	github.com/ncruces/julianday v1.0.0 // indirect
 	github.com/tetratelabs/wazero v1.5.0 // indirect
-	golang.org/x/sys v0.13.0 // indirect
+	golang.org/x/sys v0.14.0 // indirect
 )

gormlite/go.sum

@@ -2,15 +2,15 @@ github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD
 github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc=
 github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ=
 github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8=
-github.com/ncruces/go-sqlite3 v0.9.1 h1:kV7Zy+ZNyHMfMyZeWc1Yyq+wtgYZDZdp2qAA/wfeMWo=
-github.com/ncruces/go-sqlite3 v0.9.1/go.mod h1:jFoUbaCDNUS1KN5ZgFxN7bgcWoWfO0EOKeik9QAHZ08=
-github.com/ncruces/julianday v0.1.5 h1:hDJ9ejiMp3DHsoZ5KW4c1lwfMjbARS7u/gbYcd0FBZk=
-github.com/ncruces/julianday v0.1.5/go.mod h1:Dusn2KvZrrovOMJuOt0TNXL6tB7U2E8kvza5fFc9G7g=
+github.com/ncruces/go-sqlite3 v0.10.5 h1:SPnFFYajDfhTuJNjeNwdOhwVCRSAqB1PdSHsGrdfYjw=
+github.com/ncruces/go-sqlite3 v0.10.5/go.mod h1:8aGu9/G8lLZbvO6TXA0FXTP2liIefFmbpeXuhG4nJLw=
+github.com/ncruces/julianday v1.0.0 h1:fH0OKwa7NWvniGQtxdJRxAgkBMolni2BjDHaWTxqt7M=
+github.com/ncruces/julianday v1.0.0/go.mod h1:Dusn2KvZrrovOMJuOt0TNXL6tB7U2E8kvza5fFc9G7g=
 github.com/tetratelabs/wazero v1.5.0 h1:Yz3fZHivfDiZFUXnWMPUoiW7s8tC1sjdBtlJn08qYa0=
 github.com/tetratelabs/wazero v1.5.0/go.mod h1:0U0G41+ochRKoPKCJlh0jMg1CHkyfK8kDqiirMmKY8A=
-golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
-golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
-golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
+golang.org/x/sys v0.14.0 h1:Vz7Qs629MkJkGyHxUlRHizWJRG2j8fbQKjELVSNhy7Q=
+golang.org/x/sys v0.14.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 gorm.io/gorm v1.25.5 h1:zR9lOiiYf09VNh5Q1gphfyia1JpiClIWG9hQaxB/mls=
 gorm.io/gorm v1.25.5/go.mod h1:hbnx/Oo0ChWMn1BIhpy1oYozzpM15i4YPuHDmfYtwg8=

gormlite/sqlite.go

@@ -50,7 +50,7 @@ func (dialector _Dialector) Initialize(db *gorm.DB) (err error) {
 	if err := db.ConnPool.QueryRowContext(context.Background(), "select sqlite_version()").Scan(&version); err != nil {
 		return err
 	}
-	// https://www.sqlite.org/releaselog/3_35_0.html
+	// https://sqlite.org/releaselog/3_35_0.html
 	if compareVersion(version, "3.35.0") >= 0 {
 		callbacks.RegisterDefaultCallbacks(db, &callbacks.Config{
 			CreateClauses:        []string{"INSERT", "VALUES", "ON CONFLICT", "RETURNING"},
@@ -199,7 +199,7 @@ func (dialector _Dialector) DataTypeOf(field *schema.Field) string {
 	case schema.Int, schema.Uint:
 		if field.AutoIncrement {
 			// doesn't check `PrimaryKey`, to keep backward compatibility
-			// https://www.sqlite.org/autoinc.html
+			// https://sqlite.org/autoinc.html
 			return "integer PRIMARY KEY AUTOINCREMENT"
 		} else {
 			return "integer"

gormlite/tests.patch

@@ -20,12 +20,3 @@ diff --git a/tests/tests_test.go b/tests/tests_test.go
  	"gorm.io/driver/sqlserver"
  	"gorm.io/gorm"
  	"gorm.io/gorm/logger"
-@@ -89,7 +91,7 @@ func OpenTestConnection(cfg *gorm.Config) (db *gorm.DB, err error) {
- 		db, err = gorm.Open(mysql.Open(dbDSN), cfg)
- 	default:
- 		log.Println("testing sqlite3...")
--		db, err = gorm.Open(sqlite.Open(filepath.Join(os.TempDir(), "gorm.db?_foreign_keys=on")), cfg)
-+		db, err = gorm.Open(sqlite.Open("file:"+filepath.Join(os.TempDir(), "gorm.db")+"?_pragma=busy_timeout(1000)&_pragma=foreign_keys(1)"), cfg)
- 	}
- 
- 	if err != nil {

internal/util/error.go

@@ -1,7 +1,6 @@
 package util
 
 import (
-	"fmt"
 	"runtime"
 	"strconv"
 )
@@ -15,9 +14,8 @@ const (
 	OOMErr       = ErrorString("sqlite3: out of memory")
 	RangeErr     = ErrorString("sqlite3: index out of range")
 	NoNulErr     = ErrorString("sqlite3: missing NUL terminator")
-	NoGlobalErr  = ErrorString("sqlite3: could not find global: ")
-	NoFuncErr    = ErrorString("sqlite3: could not find function: ")
-	BinaryErr    = ErrorString("sqlite3: no SQLite binary embed/set/loaded")
+	NoBinaryErr  = ErrorString("sqlite3: no SQLite binary embed/set/loaded")
+	BadBinaryErr = ErrorString("sqlite3: invalid SQLite binary embed/set/loaded")
 	TimeErr      = ErrorString("sqlite3: invalid time value")
 	WhenceErr    = ErrorString("sqlite3: invalid whence")
 	OffsetErr    = ErrorString("sqlite3: invalid offset")
@@ -35,14 +33,6 @@ func AssertErr() ErrorString {
 	return ErrorString(msg)
 }
 
-func Finalizer[T any](skip int) func(*T) {
-	msg := fmt.Sprintf("sqlite3: %T not closed", new(T))
-	if _, file, line, ok := runtime.Caller(skip + 1); ok && skip >= 0 {
-		msg += " (" + file + ":" + strconv.Itoa(line) + ")"
-	}
-	return func(*T) { panic(ErrorString(msg)) }
-}
-
 func ErrorCodeString(rc uint32) string {
 	switch rc {
 	case ABORT_ROLLBACK:

internal/util/mem.go

@@ -24,6 +24,17 @@ func View(mod api.Module, ptr uint32, size uint64) []byte {
 	return buf
 }
 
+func ReadUint8(mod api.Module, ptr uint32) uint8 {
+	if ptr == 0 {
+		panic(NilErr)
+	}
+	v, ok := mod.Memory().ReadByte(ptr)
+	if !ok {
+		panic(RangeErr)
+	}
+	return v
+}
+
 func ReadUint32(mod api.Module, ptr uint32) uint32 {
 	if ptr == 0 {
 		panic(NilErr)
@@ -35,6 +46,16 @@ func ReadUint32(mod api.Module, ptr uint32) uint32 {
 	return v
 }
 
+func WriteUint8(mod api.Module, ptr uint32, v uint8) {
+	if ptr == 0 {
+		panic(NilErr)
+	}
+	ok := mod.Memory().WriteByte(ptr, v)
+	if !ok {
+		panic(RangeErr)
+	}
+}
+
 func WriteUint32(mod api.Module, ptr uint32, v uint32) {
 	if ptr == 0 {
 		panic(NilErr)

internal/util/mem_test.go

@@ -28,6 +28,20 @@ func TestView_overflow(t *testing.T) {
 	t.Error("want panic")
 }
 
+func TestReadUint8_nil(t *testing.T) {
+	defer func() { _ = recover() }()
+	mock := wazerotest.NewModule(wazerotest.NewFixedMemory(wazerotest.PageSize))
+	ReadUint8(mock, 0)
+	t.Error("want panic")
+}
+
+func TestReadUint8_range(t *testing.T) {
+	defer func() { _ = recover() }()
+	mock := wazerotest.NewModule(wazerotest.NewFixedMemory(wazerotest.PageSize))
+	ReadUint8(mock, wazerotest.PageSize)
+	t.Error("want panic")
+}
+
 func TestReadUint32_nil(t *testing.T) {
 	defer func() { _ = recover() }()
 	mock := wazerotest.NewModule(wazerotest.NewFixedMemory(wazerotest.PageSize))
@@ -56,6 +70,20 @@ func TestReadUint64_range(t *testing.T) {
 	t.Error("want panic")
 }
 
+func TestWriteUint8_nil(t *testing.T) {
+	defer func() { _ = recover() }()
+	mock := wazerotest.NewModule(wazerotest.NewFixedMemory(wazerotest.PageSize))
+	WriteUint8(mock, 0, 1)
+	t.Error("want panic")
+}
+
+func TestWriteUint8_range(t *testing.T) {
+	defer func() { _ = recover() }()
+	mock := wazerotest.NewModule(wazerotest.NewFixedMemory(wazerotest.PageSize))
+	WriteUint8(mock, wazerotest.PageSize, 1)
+	t.Error("want panic")
+}
+
 func TestWriteUint32_nil(t *testing.T) {
 	defer func() { _ = recover() }()
 	mock := wazerotest.NewModule(wazerotest.NewFixedMemory(wazerotest.PageSize))

json.go

@@ -9,26 +9,16 @@ import (
 	"github.com/ncruces/go-sqlite3/internal/util"
 )
 
-// JSON returns:
-// a [json.Marshaler] that can be used as an argument to
-// [database/sql.DB.Exec] and similar methods to
-// store value as JSON; and
-// a [database/sql.Scanner] that can be used as an argument to
-// [database/sql.Row.Scan] and similar methods to
-// decode JSON into value.
+// JSON returns a value that can be used as an argument to
+// [database/sql.DB.Exec], [database/sql.Row.Scan] and similar methods to
+// store value as JSON, or decode JSON into value.
 func JSON(value any) any {
 	return jsonValue{value}
 }
 
 type jsonValue struct{ any }
 
-func (j jsonValue) MarshalJSON() ([]byte, error) {
-	return json.Marshal(j.any)
-}
-
-func (j jsonValue) UnmarshalJSON(data []byte) error {
-	return json.Unmarshal(data, j.any)
-}
+func (j jsonValue) JSON() any { return j.any }
 
 func (j jsonValue) Scan(value any) error {
 	var buf []byte
@@ -52,5 +42,5 @@ func (j jsonValue) Scan(value any) error {
 		panic(util.AssertErr())
 	}
 
-	return j.UnmarshalJSON(buf)
+	return json.Unmarshal(buf, j.any)
 }

pointer.go

@@ -4,11 +4,11 @@ package sqlite3
 // that can be used as an argument to
 // [database/sql.DB.Exec] and similar methods.
 //
-// https://www.sqlite.org/bindptr.html
+// https://sqlite.org/bindptr.html
 func Pointer[T any](val T) any {
 	return pointer[T]{val}
 }
 
 type pointer[T any] struct{ val T }
 
-func (p pointer[T]) Value() any { return p.val }
+func (p pointer[T]) Pointer() any { return p.val }

sqlite.go

@@ -57,7 +57,7 @@ func compileSQLite() {
 		}
 	}
 	if bin == nil {
-		instance.err = util.BinaryErr
+		instance.err = util.NoBinaryErr
 		return
 	}
 
@@ -67,8 +67,9 @@ func compileSQLite() {
 type sqlite struct {
 	ctx   context.Context
 	mod   api.Module
-	api   sqliteAPI
+	funcs [8]api.Function
 	stack [8]uint64
+	freer uint32
 }
 
 func instantiateSQLite() (sqlt *sqlite, err error) {
@@ -86,104 +87,12 @@ func instantiateSQLite() (sqlt *sqlite, err error) {
 		return nil, err
 	}
 
-	getFun := func(name string) api.Function {
-		f := sqlt.mod.ExportedFunction(name)
-		if f == nil {
-			err = util.NoFuncErr + util.ErrorString(name)
-			return nil
-		}
-		return f
+	global := sqlt.mod.ExportedGlobal("malloc_destructor")
+	if global == nil {
+		return nil, util.BadBinaryErr
 	}
 
-	getVal := func(name string) uint32 {
-		g := sqlt.mod.ExportedGlobal(name)
-		if g == nil {
-			err = util.NoGlobalErr + util.ErrorString(name)
-			return 0
-		}
-		return util.ReadUint32(sqlt.mod, uint32(g.Get()))
-	}
-
-	sqlt.api = sqliteAPI{
-		free:            getFun("free"),
-		malloc:          getFun("malloc"),
-		destructor:      getVal("malloc_destructor"),
-		errcode:         getFun("sqlite3_errcode"),
-		errstr:          getFun("sqlite3_errstr"),
-		errmsg:          getFun("sqlite3_errmsg"),
-		erroff:          getFun("sqlite3_error_offset"),
-		open:            getFun("sqlite3_open_v2"),
-		close:           getFun("sqlite3_close"),
-		closeZombie:     getFun("sqlite3_close_v2"),
-		prepare:         getFun("sqlite3_prepare_v3"),
-		finalize:        getFun("sqlite3_finalize"),
-		reset:           getFun("sqlite3_reset"),
-		step:            getFun("sqlite3_step"),
-		exec:            getFun("sqlite3_exec"),
-		interrupt:       getFun("sqlite3_interrupt"),
-		progressHandler: getFun("sqlite3_progress_handler_go"),
-		clearBindings:   getFun("sqlite3_clear_bindings"),
-		bindCount:       getFun("sqlite3_bind_parameter_count"),
-		bindIndex:       getFun("sqlite3_bind_parameter_index"),
-		bindName:        getFun("sqlite3_bind_parameter_name"),
-		bindNull:        getFun("sqlite3_bind_null"),
-		bindInteger:     getFun("sqlite3_bind_int64"),
-		bindFloat:       getFun("sqlite3_bind_double"),
-		bindText:        getFun("sqlite3_bind_text64"),
-		bindBlob:        getFun("sqlite3_bind_blob64"),
-		bindZeroBlob:    getFun("sqlite3_bind_zeroblob64"),
-		bindPointer:     getFun("sqlite3_bind_pointer_go"),
-		columnCount:     getFun("sqlite3_column_count"),
-		columnName:      getFun("sqlite3_column_name"),
-		columnType:      getFun("sqlite3_column_type"),
-		columnInteger:   getFun("sqlite3_column_int64"),
-		columnFloat:     getFun("sqlite3_column_double"),
-		columnText:      getFun("sqlite3_column_text"),
-		columnBlob:      getFun("sqlite3_column_blob"),
-		columnBytes:     getFun("sqlite3_column_bytes"),
-		blobOpen:        getFun("sqlite3_blob_open"),
-		blobClose:       getFun("sqlite3_blob_close"),
-		blobReopen:      getFun("sqlite3_blob_reopen"),
-		blobBytes:       getFun("sqlite3_blob_bytes"),
-		blobRead:        getFun("sqlite3_blob_read"),
-		blobWrite:       getFun("sqlite3_blob_write"),
-		backupInit:      getFun("sqlite3_backup_init"),
-		backupStep:      getFun("sqlite3_backup_step"),
-		backupFinish:    getFun("sqlite3_backup_finish"),
-		backupRemaining: getFun("sqlite3_backup_remaining"),
-		backupPageCount: getFun("sqlite3_backup_pagecount"),
-		changes:         getFun("sqlite3_changes64"),
-		lastRowid:       getFun("sqlite3_last_insert_rowid"),
-		autocommit:      getFun("sqlite3_get_autocommit"),
-		anyCollation:    getFun("sqlite3_anycollseq_init"),
-		createCollation: getFun("sqlite3_create_collation_go"),
-		createFunction:  getFun("sqlite3_create_function_go"),
-		createAggregate: getFun("sqlite3_create_aggregate_function_go"),
-		createWindow:    getFun("sqlite3_create_window_function_go"),
-		aggregateCtx:    getFun("sqlite3_aggregate_context"),
-		userData:        getFun("sqlite3_user_data"),
-		setAuxData:      getFun("sqlite3_set_auxdata_go"),
-		getAuxData:      getFun("sqlite3_get_auxdata"),
-		valueType:       getFun("sqlite3_value_type"),
-		valueInteger:    getFun("sqlite3_value_int64"),
-		valueFloat:      getFun("sqlite3_value_double"),
-		valueText:       getFun("sqlite3_value_text"),
-		valueBlob:       getFun("sqlite3_value_blob"),
-		valueBytes:      getFun("sqlite3_value_bytes"),
-		valuePointer:    getFun("sqlite3_value_pointer_go"),
-		resultNull:      getFun("sqlite3_result_null"),
-		resultInteger:   getFun("sqlite3_result_int64"),
-		resultFloat:     getFun("sqlite3_result_double"),
-		resultText:      getFun("sqlite3_result_text64"),
-		resultBlob:      getFun("sqlite3_result_blob64"),
-		resultZeroBlob:  getFun("sqlite3_result_zeroblob64"),
-		resultPointer:   getFun("sqlite3_result_pointer_go"),
-		resultValue:     getFun("sqlite3_result_value"),
-		resultError:     getFun("sqlite3_result_error"),
-		resultErrorCode: getFun("sqlite3_result_error_code"),
-		resultErrorMem:  getFun("sqlite3_result_error_nomem"),
-		resultErrorBig:  getFun("sqlite3_result_error_toobig"),
-	}
+	sqlt.freer = util.ReadUint32(sqlt.mod, uint32(global.Get()))
 	if err != nil {
 		return nil, err
 	}
@@ -205,17 +114,17 @@ func (sqlt *sqlite) error(rc uint64, handle uint32, sql ...string) error {
 		panic(util.OOMErr)
 	}
 
-	if r := sqlt.call(sqlt.api.errstr, rc); r != 0 {
-		err.str = util.ReadString(sqlt.mod, uint32(r), _MAX_STRING)
+	if r := sqlt.call("sqlite3_errstr", rc); r != 0 {
+		err.str = util.ReadString(sqlt.mod, uint32(r), _MAX_NAME)
 	}
 
 	if handle != 0 {
-		if r := sqlt.call(sqlt.api.errmsg, uint64(handle)); r != 0 {
-			err.msg = util.ReadString(sqlt.mod, uint32(r), _MAX_STRING)
+		if r := sqlt.call("sqlite3_errmsg", uint64(handle)); r != 0 {
+			err.msg = util.ReadString(sqlt.mod, uint32(r), _MAX_NAME)
 		}
 
 		if sql != nil {
-			if r := sqlt.call(sqlt.api.erroff, uint64(handle)); r != math.MaxUint32 {
+			if r := sqlt.call("sqlite3_error_offset", uint64(handle)); r != math.MaxUint32 {
 				err.sql = sql[0][r:]
 			}
 		}
@@ -228,12 +137,33 @@ func (sqlt *sqlite) error(rc uint64, handle uint32, sql ...string) error {
 	return &err
 }
 
-func (sqlt *sqlite) call(fn api.Function, params ...uint64) uint64 {
+func (sqlt *sqlite) getfn(name string) (api.Function, uint32) {
+	// https://cr.yp.to/cdb/cdb.txt
+	hash := func(s string) uint32 {
+		var hash uint32 = 5381
+		for _, b := range []byte(s) {
+			hash = (hash<<5 + hash) ^ uint32(b)
+		}
+		return hash
+	}(name) % uint32(len(sqlt.funcs))
+
+	fn := sqlt.funcs[hash]
+	if fn == nil || name != fn.Definition().Name() {
+		fn = sqlt.mod.ExportedFunction(name)
+	} else {
+		sqlt.funcs[hash] = nil
+	}
+	return fn, hash
+}
+
+func (sqlt *sqlite) call(name string, params ...uint64) uint64 {
 	copy(sqlt.stack[:], params)
+	fn, hash := sqlt.getfn(name)
 	err := fn.CallWithStack(sqlt.ctx, sqlt.stack[:])
 	if err != nil {
 		panic(err)
 	}
+	sqlt.funcs[hash] = fn
 	return sqlt.stack[0]
 }
 
@@ -241,14 +171,14 @@ func (sqlt *sqlite) free(ptr uint32) {
 	if ptr == 0 {
 		return
 	}
-	sqlt.call(sqlt.api.free, uint64(ptr))
+	sqlt.call("free", uint64(ptr))
 }
 
 func (sqlt *sqlite) new(size uint64) uint32 {
 	if size > _MAX_ALLOCATION_SIZE {
 		panic(util.OOMErr)
 	}
-	ptr := uint32(sqlt.call(sqlt.api.malloc, size))
+	ptr := uint32(sqlt.call("malloc", size))
 	if ptr == 0 && size != 0 {
 		panic(util.OOMErr)
 	}
@@ -290,17 +220,23 @@ func (a *arena) free() {
 	if a.sqlt == nil {
 		return
 	}
-	a.reset()
+	for _, ptr := range a.ptrs {
+		a.sqlt.free(ptr)
+	}
 	a.sqlt.free(a.base)
 	a.sqlt = nil
 }
 
-func (a *arena) reset() {
-	for _, ptr := range a.ptrs {
-		a.sqlt.free(ptr)
+func (a *arena) mark() (reset func()) {
+	ptrs := len(a.ptrs)
+	next := a.next
+	return func() {
+		for _, ptr := range a.ptrs[ptrs:] {
+			a.sqlt.free(ptr)
+		}
+		a.ptrs = a.ptrs[:ptrs]
+		a.next = next
 	}
-	a.ptrs = nil
-	a.next = 0
 }
 
 func (a *arena) new(size uint64) uint32 {
@@ -329,95 +265,37 @@ func (a *arena) string(s string) uint32 {
 	return ptr
 }
 
-type sqliteAPI struct {
-	free            api.Function
-	malloc          api.Function
-	errcode         api.Function
-	errstr          api.Function
-	errmsg          api.Function
-	erroff          api.Function
-	open            api.Function
-	close           api.Function
-	closeZombie     api.Function
-	prepare         api.Function
-	finalize        api.Function
-	reset           api.Function
-	step            api.Function
-	exec            api.Function
-	interrupt       api.Function
-	progressHandler api.Function
-	clearBindings   api.Function
-	bindCount       api.Function
-	bindIndex       api.Function
-	bindName        api.Function
-	bindNull        api.Function
-	bindInteger     api.Function
-	bindFloat       api.Function
-	bindText        api.Function
-	bindBlob        api.Function
-	bindZeroBlob    api.Function
-	bindPointer     api.Function
-	columnCount     api.Function
-	columnName      api.Function
-	columnType      api.Function
-	columnInteger   api.Function
-	columnFloat     api.Function
-	columnText      api.Function
-	columnBlob      api.Function
-	columnBytes     api.Function
-	blobOpen        api.Function
-	blobClose       api.Function
-	blobReopen      api.Function
-	blobBytes       api.Function
-	blobRead        api.Function
-	blobWrite       api.Function
-	backupInit      api.Function
-	backupStep      api.Function
-	backupFinish    api.Function
-	backupRemaining api.Function
-	backupPageCount api.Function
-	changes         api.Function
-	lastRowid       api.Function
-	autocommit      api.Function
-	anyCollation    api.Function
-	createCollation api.Function
-	createFunction  api.Function
-	createAggregate api.Function
-	createWindow    api.Function
-	aggregateCtx    api.Function
-	userData        api.Function
-	setAuxData      api.Function
-	getAuxData      api.Function
-	valueType       api.Function
-	valueInteger    api.Function
-	valueFloat      api.Function
-	valueText       api.Function
-	valueBlob       api.Function
-	valueBytes      api.Function
-	valuePointer    api.Function
-	resultNull      api.Function
-	resultInteger   api.Function
-	resultFloat     api.Function
-	resultText      api.Function
-	resultBlob      api.Function
-	resultZeroBlob  api.Function
-	resultPointer   api.Function
-	resultValue     api.Function
-	resultError     api.Function
-	resultErrorCode api.Function
-	resultErrorMem  api.Function
-	resultErrorBig  api.Function
-	destructor      uint32
-}
-
 func exportCallbacks(env wazero.HostModuleBuilder) wazero.HostModuleBuilder {
-	util.ExportFuncII(env, "go_progress", callbackProgress)
-	util.ExportFuncVI(env, "go_destroy", callbackDestroy)
-	util.ExportFuncIIIIII(env, "go_compare", callbackCompare)
-	util.ExportFuncVIII(env, "go_func", callbackFunc)
-	util.ExportFuncVIII(env, "go_step", callbackStep)
-	util.ExportFuncVI(env, "go_final", callbackFinal)
-	util.ExportFuncVI(env, "go_value", callbackValue)
-	util.ExportFuncVIII(env, "go_inverse", callbackInverse)
+	util.ExportFuncII(env, "go_progress", progressCallback)
+	util.ExportFuncVI(env, "go_destroy", destroyCallback)
+	util.ExportFuncVIII(env, "go_func", funcCallback)
+	util.ExportFuncVIII(env, "go_step", stepCallback)
+	util.ExportFuncVI(env, "go_final", finalCallback)
+	util.ExportFuncVI(env, "go_value", valueCallback)
+	util.ExportFuncVIII(env, "go_inverse", inverseCallback)
+	util.ExportFuncIIIIII(env, "go_compare", compareCallback)
+	util.ExportFuncIIIIII(env, "go_vtab_create", vtabModuleCallback(0))
+	util.ExportFuncIIIIII(env, "go_vtab_connect", vtabModuleCallback(1))
+	util.ExportFuncII(env, "go_vtab_disconnect", vtabDisconnectCallback)
+	util.ExportFuncII(env, "go_vtab_destroy", vtabDestroyCallback)
+	util.ExportFuncIII(env, "go_vtab_best_index", vtabBestIndexCallback)
+	util.ExportFuncIIIII(env, "go_vtab_update", vtabUpdateCallback)
+	util.ExportFuncIII(env, "go_vtab_rename", vtabRenameCallback)
+	util.ExportFuncIIIII(env, "go_vtab_find_function", vtabFindFuncCallback)
+	util.ExportFuncII(env, "go_vtab_begin", vtabBeginCallback)
+	util.ExportFuncII(env, "go_vtab_sync", vtabSyncCallback)
+	util.ExportFuncII(env, "go_vtab_commit", vtabCommitCallback)
+	util.ExportFuncII(env, "go_vtab_rollback", vtabRollbackCallback)
+	util.ExportFuncIII(env, "go_vtab_savepoint", vtabSavepointCallback)
+	util.ExportFuncIII(env, "go_vtab_release", vtabReleaseCallback)
+	util.ExportFuncIII(env, "go_vtab_rollback_to", vtabRollbackToCallback)
+	util.ExportFuncIIIIII(env, "go_vtab_integrity", vtabIntegrityCallback)
+	util.ExportFuncIII(env, "go_cur_open", cursorOpenCallback)
+	util.ExportFuncII(env, "go_cur_close", cursorCloseCallback)
+	util.ExportFuncIIIIII(env, "go_cur_filter", cursorFilterCallback)
+	util.ExportFuncII(env, "go_cur_next", cursorNextCallback)
+	util.ExportFuncII(env, "go_cur_eof", cursorEOFCallback)
+	util.ExportFuncIIII(env, "go_cur_column", cursorColumnCallback)
+	util.ExportFuncIII(env, "go_cur_rowid", cursorRowIDCallback)
 	return env
 }

sqlite3/download.sh

@@ -3,33 +3,33 @@ set -euo pipefail
 
 cd -P -- "$(dirname -- "$0")"
 
-curl -#OL "https://sqlite.org/2023/sqlite-amalgamation-3440000.zip"
+curl -#OL "https://sqlite.org/2023/sqlite-amalgamation-3440200.zip"
 unzip -d . sqlite-amalgamation-*.zip
 mv sqlite-amalgamation-*/sqlite3* .
 rm -rf sqlite-amalgamation-*
 
-cat *.patch | patch --posix
+cat *.patch | patch --no-backup-if-mismatch
 
 mkdir -p ext/
 cd ext/
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/ext/misc/decimal.c"
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/ext/misc/uint.c"
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/ext/misc/uuid.c"
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/ext/misc/base64.c"
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/ext/misc/regexp.c"
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/ext/misc/series.c"
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/ext/misc/anycollseq.c"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/ext/misc/decimal.c"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/ext/misc/uint.c"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/ext/misc/uuid.c"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/ext/misc/base64.c"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/ext/misc/regexp.c"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/ext/misc/series.c"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/ext/misc/anycollseq.c"
 cd ~-
 
 cd ../vfs/tests/mptest/testdata/
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/mptest/mptest.c"
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/mptest/config01.test"
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/mptest/config02.test"
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/mptest/crash01.test"
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/mptest/crash02.subtest"
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/mptest/multiwrite01.test"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/mptest/mptest.c"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/mptest/config01.test"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/mptest/config02.test"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/mptest/crash01.test"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/mptest/crash02.subtest"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/mptest/multiwrite01.test"
 cd ~-
 
 cd ../vfs/tests/speedtest1/testdata/
-curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.0/test/speedtest1.c"
+curl -#OL "https://github.com/sqlite/sqlite/raw/version-3.44.2/test/speedtest1.c"
 cd ~-

sqlite3/func.c

@@ -1,55 +1,44 @@
 #include <stddef.h>
 
+#include "include.h"
 #include "sqlite3.h"
 
-int go_compare(void *, int, const void *, int, const void *);
 void go_func(sqlite3_context *, int, sqlite3_value **);
 void go_step(sqlite3_context *, int, sqlite3_value **);
 void go_final(sqlite3_context *);
 void go_value(sqlite3_context *);
 void go_inverse(sqlite3_context *, int, sqlite3_value **);
-void go_destroy(void *);
 
-int sqlite3_create_collation_go(sqlite3 *db, const char *zName, void *pApp) {
-  return sqlite3_create_collation_v2(db, zName, SQLITE_UTF8, pApp, go_compare,
-                                     go_destroy);
+int go_compare(go_handle, int, const void *, int, const void *);
+
+int sqlite3_create_collation_go(sqlite3 *db, const char *name, go_handle app) {
+  int rc = sqlite3_create_collation_v2(db, name, SQLITE_UTF8, app, go_compare,
+                                       go_destroy);
+  if (rc) go_destroy(app);
+  return rc;
 }
 
-int sqlite3_create_function_go(sqlite3 *db, const char *zName, int nArg,
-                               int flags, void *pApp) {
-  return sqlite3_create_function_v2(db, zName, nArg, SQLITE_UTF8 | flags, pApp,
+int sqlite3_create_function_go(sqlite3 *db, const char *name, int argc,
+                               int flags, go_handle app) {
+  return sqlite3_create_function_v2(db, name, argc, SQLITE_UTF8 | flags, app,
                                     go_func, /*step=*/NULL, /*final=*/NULL,
                                     go_destroy);
 }
 
-int sqlite3_create_aggregate_function_go(sqlite3 *db, const char *zName,
-                                         int nArg, int flags, void *pApp) {
-  return sqlite3_create_window_function(db, zName, nArg, SQLITE_UTF8 | flags,
-                                        pApp, go_step, go_final, /*value=*/NULL,
+int sqlite3_create_aggregate_function_go(sqlite3 *db, const char *name,
+                                         int argc, int flags, go_handle app) {
+  return sqlite3_create_window_function(db, name, argc, SQLITE_UTF8 | flags,
+                                        app, go_step, go_final, /*value=*/NULL,
                                         /*inverse=*/NULL, go_destroy);
 }
 
-int sqlite3_create_window_function_go(sqlite3 *db, const char *zName, int nArg,
-                                      int flags, void *pApp) {
-  return sqlite3_create_window_function(db, zName, nArg, SQLITE_UTF8 | flags,
-                                        pApp, go_step, go_final, go_value,
+int sqlite3_create_window_function_go(sqlite3 *db, const char *name, int argc,
+                                      int flags, go_handle app) {
+  return sqlite3_create_window_function(db, name, argc, SQLITE_UTF8 | flags,
+                                        app, go_step, go_final, go_value,
                                         go_inverse, go_destroy);
 }
 
-void sqlite3_set_auxdata_go(sqlite3_context *ctx, int iArg, void *pAux) {
-  sqlite3_set_auxdata(ctx, iArg, pAux, go_destroy);
-}
-
-#define GO_POINTER_TYPE "github.com/ncruces/go-sqlite3.Pointer"
-
-int sqlite3_bind_pointer_go(sqlite3_stmt *stmt, int i, void *pApp) {
-  return sqlite3_bind_pointer(stmt, i, pApp, GO_POINTER_TYPE, go_destroy);
-}
-
-void sqlite3_result_pointer_go(sqlite3_context *ctx, void *pApp) {
-  sqlite3_result_pointer(ctx, pApp, GO_POINTER_TYPE, go_destroy);
-}
-
-void *sqlite3_value_pointer_go(sqlite3_value *val) {
-  return sqlite3_value_pointer(val, GO_POINTER_TYPE);
-}
+void sqlite3_set_auxdata_go(sqlite3_context *ctx, int i, go_handle aux) {
+  sqlite3_set_auxdata(ctx, i, aux, go_destroy);
+}

sqlite3/include.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <assert.h>
+#include <stddef.h>
+
+// https://github.com/JuliaLang/julia/blob/v1.9.4/src/julia.h#L67-L68
+#define container_of(ptr, type, member) \
+  ((type *)((char *)(ptr)-offsetof(type, member)))
+
+typedef void *go_handle;
+void go_destroy(go_handle);
+static_assert(sizeof(go_handle) == 4, "Unexpected size");

sqlite3/main.c

@@ -1,7 +1,5 @@
 // Amalgamation
 #include "sqlite3.c"
-// VFS
-#include "vfs.c"
 // Extensions
 #include "ext/anycollseq.c"
 #include "ext/base64.c"
@@ -10,9 +8,15 @@
 #include "ext/series.c"
 #include "ext/uint.c"
 #include "ext/uuid.c"
+// Bindings
 #include "func.c"
+#include "pointer.c"
 #include "progress.c"
 #include "time.c"
+#include "vfs.c"
+#include "vtab.c"
+
+sqlite3_destructor_type malloc_destructor = &free;
 
 __attribute__((constructor)) void init() {
   sqlite3_initialize();

sqlite3/pointer.c

@@ -0,0 +1,17 @@
+
+#include "include.h"
+#include "sqlite3.h"
+
+#define GO_POINTER_TYPE "github.com/ncruces/go-sqlite3.Pointer"
+
+int sqlite3_bind_pointer_go(sqlite3_stmt *stmt, int i, go_handle app) {
+  return sqlite3_bind_pointer(stmt, i, app, GO_POINTER_TYPE, go_destroy);
+}
+
+void sqlite3_result_pointer_go(sqlite3_context *ctx, go_handle app) {
+  sqlite3_result_pointer(ctx, app, GO_POINTER_TYPE, go_destroy);
+}
+
+go_handle sqlite3_value_pointer_go(sqlite3_value *val) {
+  return sqlite3_value_pointer(val, GO_POINTER_TYPE);
+}

sqlite3/sqlite_cfg.h

@@ -37,25 +37,33 @@
 #define SQLITE_DEFAULT_WAL_SYNCHRONOUS 1
 #define SQLITE_LIKE_DOESNT_MATCH_BLOBS
 #define SQLITE_MAX_EXPR_DEPTH 0
-#define SQLITE_OMIT_DECLTYPE
+#define SQLITE_USE_ALLOCA
 #define SQLITE_OMIT_DEPRECATED
 #define SQLITE_OMIT_SHARED_CACHE
 #define SQLITE_OMIT_AUTOINIT
-#define SQLITE_USE_ALLOCA
+// #define SQLITE_OMIT_DECLTYPE
+// #define SQLITE_OMIT_PROGRESS_CALLBACK
 
 // Other Options
 
 #define SQLITE_ALLOW_URI_AUTHORITY
-#define SQLITE_ENABLE_BATCH_ATOMIC_WRITE
+#define SQLITE_TRUSTED_SCHEMA 0
+#define SQLITE_DEFAULT_FOREIGN_KEYS 1
 #define SQLITE_ENABLE_ATOMIC_WRITE
-#define SQLITE_OMIT_DESERIALIZE
+#define SQLITE_ENABLE_BATCH_ATOMIC_WRITE
 
 // Because WASM does not support shared memory,
 // SQLite disables WAL for WASM builds.
 // We patch SQLite to use exclusive locking mode instead.
-// https://www.sqlite.org/wal.html#noshm
+// https://sqlite.org/wal.html#noshm
 #undef SQLITE_OMIT_WAL
 
+// We have our own memdb VFS.
+// To avoid interactions between the two,
+// omit sqlite3_serialize/sqlite3_deserialize,
+// which we also don't wrap.
+#define SQLITE_OMIT_DESERIALIZE
+
 // Amalgamated Extensions
 
 #define SQLITE_ENABLE_MATH_FUNCTIONS 1

sqlite3/time.c

@@ -82,7 +82,7 @@ int sqlite3_time_init(sqlite3 *db, char **pzErrMsg,
                               time_collation,
                               /*destroy=*/NULL);
   sqlite3_create_function_v2(
-      db, "json_time", -1,
+      db, "json_time", /*nArg=*/-1,
       SQLITE_UTF8 | SQLITE_DETERMINISTIC | SQLITE_INNOCUOUS, /*arg=*/NULL,
       json_time_func, /*step=*/NULL, /*final=*/NULL, /*destroy=*/NULL);
   return SQLITE_OK;

sqlite3/vfs.c

@@ -2,6 +2,7 @@
 #include <stddef.h>
 #include <time.h>
 
+#include "include.h"
 #include "sqlite3.h"
 
 int go_localtime(struct tm *, sqlite3_int64);
@@ -9,7 +10,6 @@ int go_vfs_find(const char *zVfsName);
 
 int go_randomness(sqlite3_vfs *, int nByte, char *zOut);
 int go_sleep(sqlite3_vfs *, int microseconds);
-int go_current_time(sqlite3_vfs *, double *);
 int go_current_time_64(sqlite3_vfs *, sqlite3_int64 *);
 
 int go_open(sqlite3_vfs *, sqlite3_filename zName, sqlite3_file *, int flags,
@@ -60,7 +60,7 @@ static int go_open_wrapper(sqlite3_vfs *vfs, sqlite3_filename zName,
 
 struct go_file {
   sqlite3_file base;
-  int handle;
+  go_handle handle;
 };
 
 int sqlite3_os_init() {
@@ -77,24 +77,21 @@ int sqlite3_os_init() {
 
       .xRandomness = go_randomness,
       .xSleep = go_sleep,
-      .xCurrentTime = go_current_time,
       .xCurrentTimeInt64 = go_current_time_64,
   };
   return sqlite3_vfs_register(&os_vfs, /*default=*/true);
 }
 
-sqlite3_destructor_type malloc_destructor = &free;
-
 int localtime_s(struct tm *const pTm, time_t const *const pTime) {
   return go_localtime(pTm, (sqlite3_int64)*pTime);
 }
 
 sqlite3_vfs *sqlite3_vfs_find(const char *zVfsName) {
-  if (zVfsName) {
+  if (zVfsName && go_vfs_find(zVfsName)) {
     static sqlite3_vfs *go_vfs_list;
 
     for (sqlite3_vfs *it = go_vfs_list; it; it = it->pNext) {
-      if (!strcmp(zVfsName, it->zName) && go_vfs_find(it->zName)) {
+      if (!strcmp(zVfsName, it->zName)) {
         return it;
       }
     }
@@ -109,30 +106,27 @@ sqlite3_vfs *sqlite3_vfs_find(const char *zVfsName) {
       }
     }
 
-    if (go_vfs_find(zVfsName)) {
-      sqlite3_vfs *head = go_vfs_list;
-      go_vfs_list = malloc(sizeof(sqlite3_vfs) + strlen(zVfsName) + 1);
-      char *name = (char *)(go_vfs_list + 1);
-      strcpy(name, zVfsName);
-      *go_vfs_list = (sqlite3_vfs){
-          .iVersion = 2,
-          .szOsFile = sizeof(struct go_file),
-          .mxPathname = 512,
-          .zName = name,
-          .pNext = head,
+    sqlite3_vfs *head = go_vfs_list;
+    go_vfs_list = malloc(sizeof(sqlite3_vfs) + strlen(zVfsName) + 1);
+    char *name = (char *)(go_vfs_list + 1);
+    strcpy(name, zVfsName);
+    *go_vfs_list = (sqlite3_vfs){
+        .iVersion = 2,
+        .szOsFile = sizeof(struct go_file),
+        .mxPathname = 512,
+        .zName = name,
+        .pNext = head,
 
-          .xOpen = go_open_wrapper,
-          .xDelete = go_delete,
-          .xAccess = go_access,
-          .xFullPathname = go_full_pathname,
+        .xOpen = go_open_wrapper,
+        .xDelete = go_delete,
+        .xAccess = go_access,
+        .xFullPathname = go_full_pathname,
 
-          .xRandomness = go_randomness,
-          .xSleep = go_sleep,
-          .xCurrentTime = go_current_time,
-          .xCurrentTimeInt64 = go_current_time_64,
-      };
-      return go_vfs_list;
-    }
+        .xRandomness = go_randomness,
+        .xSleep = go_sleep,
+        .xCurrentTimeInt64 = go_current_time_64,
+    };
+    return go_vfs_list;
   }
   return sqlite3_vfs_find_orig(zVfsName);
 }

sqlite3/vtab.c

@@ -0,0 +1,230 @@
+#include <stddef.h>
+
+#include "include.h"
+#include "sqlite3.h"
+
+#define SQLITE_VTAB_CREATOR_GO /******/ 0x01
+#define SQLITE_VTAB_DESTROYER_GO /****/ 0x02
+#define SQLITE_VTAB_UPDATER_GO /******/ 0x04
+#define SQLITE_VTAB_RENAMER_GO /******/ 0x08
+#define SQLITE_VTAB_OVERLOADER_GO /***/ 0x10
+#define SQLITE_VTAB_CHECKER_GO /******/ 0x20
+#define SQLITE_VTAB_TX_GO /***********/ 0x40
+#define SQLITE_VTAB_SAVEPOINTER_GO /**/ 0x80
+
+int go_vtab_create(sqlite3_module *, int argc, const char *const *argv,
+                   sqlite3_vtab **, char **pzErr);
+int go_vtab_connect(sqlite3_module *, int argc, const char *const *argv,
+                    sqlite3_vtab **, char **pzErr);
+
+int go_vtab_disconnect(sqlite3_vtab *);
+int go_vtab_destroy(sqlite3_vtab *);
+int go_vtab_best_index(sqlite3_vtab *, sqlite3_index_info *);
+int go_cur_open(sqlite3_vtab *, sqlite3_vtab_cursor **);
+
+int go_cur_close(sqlite3_vtab_cursor *);
+int go_cur_filter(sqlite3_vtab_cursor *, int idxNum, const char *idxStr,
+                  int argc, sqlite3_value **argv);
+int go_cur_next(sqlite3_vtab_cursor *);
+int go_cur_eof(sqlite3_vtab_cursor *);
+int go_cur_column(sqlite3_vtab_cursor *, sqlite3_context *, int);
+int go_cur_rowid(sqlite3_vtab_cursor *, sqlite3_int64 *pRowid);
+
+int go_vtab_update(sqlite3_vtab *, int, sqlite3_value **, sqlite3_int64 *);
+int go_vtab_rename(sqlite3_vtab *, const char *zNew);
+int go_vtab_find_function(sqlite3_vtab *, int nArg, const char *zName,
+                          go_handle *pxFunc);
+
+int go_vtab_begin(sqlite3_vtab *);
+int go_vtab_sync(sqlite3_vtab *);
+int go_vtab_commit(sqlite3_vtab *);
+int go_vtab_rollback(sqlite3_vtab *);
+
+int go_vtab_savepoint(sqlite3_vtab *, int);
+int go_vtab_release(sqlite3_vtab *, int);
+int go_vtab_rollback_to(sqlite3_vtab *, int);
+
+int go_vtab_integrity(sqlite3_vtab *, const char *zSchema, const char *zTabName,
+                      int mFlags, char **pzErr);
+
+struct go_module {
+  go_handle handle;
+  sqlite3_module base;
+};
+
+struct go_vtab {
+  go_handle handle;
+  sqlite3_vtab base;
+};
+
+struct go_cursor {
+  go_handle handle;
+  sqlite3_vtab_cursor base;
+};
+
+static void go_mod_destroy(void *pAux) {
+  struct go_module *mod = pAux;
+  void *handle = mod->handle;
+  free(mod);
+  go_destroy(handle);
+}
+
+static int go_vtab_create_wrapper(sqlite3 *db, void *pAux, int argc,
+                                  const char *const *argv,
+                                  sqlite3_vtab **ppVTab, char **pzErr) {
+  struct go_vtab *vtab = calloc(1, sizeof(struct go_vtab));
+  if (vtab == NULL) return SQLITE_NOMEM;
+  *ppVTab = &vtab->base;
+
+  struct go_module *mod = pAux;
+  int rc = go_vtab_create(&mod->base, argc, argv, ppVTab, pzErr);
+  if (rc) {
+    if (*pzErr) *pzErr = sqlite3_mprintf("%s", *pzErr);
+    free(vtab);
+  }
+  return rc;
+}
+
+static int go_vtab_connect_wrapper(sqlite3 *db, void *pAux, int argc,
+                                   const char *const *argv,
+                                   sqlite3_vtab **ppVTab, char **pzErr) {
+  struct go_vtab *vtab = calloc(1, sizeof(struct go_vtab));
+  if (vtab == NULL) return SQLITE_NOMEM;
+  *ppVTab = &vtab->base;
+
+  struct go_module *mod = pAux;
+  int rc = go_vtab_connect(&mod->base, argc, argv, ppVTab, pzErr);
+  if (rc) {
+    free(vtab);
+    if (*pzErr) *pzErr = sqlite3_mprintf("%s", *pzErr);
+  }
+  return rc;
+}
+
+static int go_vtab_disconnect_wrapper(sqlite3_vtab *pVTab) {
+  struct go_vtab *vtab = container_of(pVTab, struct go_vtab, base);
+  int rc = go_vtab_disconnect(pVTab);
+  free(vtab);
+  return rc;
+}
+
+static int go_vtab_destroy_wrapper(sqlite3_vtab *pVTab) {
+  struct go_vtab *vtab = container_of(pVTab, struct go_vtab, base);
+  int rc = go_vtab_destroy(pVTab);
+  free(vtab);
+  return rc;
+}
+
+static int go_cur_open_wrapper(sqlite3_vtab *pVTab,
+                               sqlite3_vtab_cursor **ppCursor) {
+  struct go_cursor *cur = calloc(1, sizeof(struct go_cursor));
+  if (cur == NULL) return SQLITE_NOMEM;
+  *ppCursor = &cur->base;
+
+  int rc = go_cur_open(pVTab, ppCursor);
+  if (rc) free(cur);
+  return rc;
+}
+
+static int go_cur_close_wrapper(sqlite3_vtab_cursor *pCursor) {
+  struct go_cursor *cur = container_of(pCursor, struct go_cursor, base);
+  int rc = go_cur_close(pCursor);
+  free(cur);
+  return rc;
+}
+
+static int go_vtab_find_function_wrapper(
+    sqlite3_vtab *pVTab, int nArg, const char *zName,
+    void (**pxFunc)(sqlite3_context *, int, sqlite3_value **), void **ppArg) {
+  struct go_vtab *vtab = container_of(pVTab, struct go_vtab, base);
+
+  go_handle handle;
+  int rc = go_vtab_find_function(pVTab, nArg, zName, &handle);
+  if (rc) {
+    *pxFunc = go_func;
+    *ppArg = handle;
+  }
+  return rc;
+}
+
+static int go_vtab_integrity_wrapper(sqlite3_vtab *pVTab, const char *zSchema,
+                                     const char *zTabName, int mFlags,
+                                     char **pzErr) {
+  int rc = go_vtab_integrity(pVTab, zSchema, zTabName, mFlags, pzErr);
+  if (rc && *pzErr) *pzErr = sqlite3_mprintf("%s", *pzErr);
+  return rc;
+}
+
+int sqlite3_create_module_go(sqlite3 *db, const char *zName, int flags,
+                             go_handle handle) {
+  struct go_module *mod = malloc(sizeof(struct go_module));
+  if (mod == NULL) {
+    go_destroy(handle);
+    return SQLITE_NOMEM;
+  }
+
+  mod->handle = handle;
+  mod->base = (sqlite3_module){
+      .iVersion = 4,
+      .xConnect = go_vtab_connect_wrapper,
+      .xDisconnect = go_vtab_disconnect_wrapper,
+      .xBestIndex = go_vtab_best_index,
+      .xOpen = go_cur_open_wrapper,
+      .xClose = go_cur_close_wrapper,
+      .xFilter = go_cur_filter,
+      .xNext = go_cur_next,
+      .xEof = go_cur_eof,
+      .xColumn = go_cur_column,
+      .xRowid = go_cur_rowid,
+  };
+  if (flags & SQLITE_VTAB_CREATOR_GO) {
+    mod->base.xCreate = go_vtab_create_wrapper;
+  }
+  if (flags & SQLITE_VTAB_DESTROYER_GO) {
+    mod->base.xDestroy = go_vtab_destroy_wrapper;
+  }
+  if (flags & SQLITE_VTAB_UPDATER_GO) {
+    mod->base.xUpdate = go_vtab_update;
+  }
+  if (flags & SQLITE_VTAB_RENAMER_GO) {
+    mod->base.xRename = go_vtab_rename;
+  }
+  if (flags & SQLITE_VTAB_OVERLOADER_GO) {
+    mod->base.xFindFunction = go_vtab_find_function_wrapper;
+  }
+  if (flags & SQLITE_VTAB_CHECKER_GO) {
+    mod->base.xIntegrity = go_vtab_integrity_wrapper;
+  }
+  if (flags & SQLITE_VTAB_TX_GO) {
+    mod->base.xBegin = go_vtab_begin;
+    mod->base.xSync = go_vtab_sync;
+    mod->base.xCommit = go_vtab_commit;
+    mod->base.xRollback = go_vtab_rollback;
+  }
+  if (flags & SQLITE_VTAB_SAVEPOINTER_GO) {
+    mod->base.xSavepoint = go_vtab_savepoint;
+    mod->base.xRelease = go_vtab_release;
+    mod->base.xRollbackTo = go_vtab_rollback_to;
+  }
+  if (mod->base.xCreate && !mod->base.xDestroy) {
+    mod->base.xDestroy = mod->base.xDisconnect;
+  }
+  if (mod->base.xDestroy && !mod->base.xCreate) {
+    mod->base.xCreate = mod->base.xConnect;
+  }
+
+  return sqlite3_create_module_v2(db, zName, &mod->base, mod, go_mod_destroy);
+}
+
+int sqlite3_vtab_config_go(sqlite3 *db, int op, int constraint) {
+  return sqlite3_vtab_config(db, op, constraint);
+}
+
+static_assert(offsetof(struct go_module, base) == 4, "Unexpected offset");
+static_assert(offsetof(struct go_vtab, base) == 4, "Unexpected offset");
+static_assert(offsetof(struct go_cursor, base) == 4, "Unexpected offset");
+static_assert(sizeof(struct sqlite3_index_info) == 72, "Unexpected size");
+static_assert(sizeof(struct sqlite3_index_orderby) == 8, "Unexpected size");
+static_assert(sizeof(struct sqlite3_index_constraint) == 12, "Unexpected size");
+static_assert(sizeof(struct sqlite3_index_constraint_usage) == 8,
+              "Unexpected size");

sqlite_test.go

@@ -37,7 +37,7 @@ func Test_sqlite_call_closed(t *testing.T) {
 	sqlite.close()
 
 	defer func() { _ = recover() }()
-	sqlite.call(sqlite.api.free)
+	sqlite.call("free")
 	t.Error("want panic")
 }
 

stmt.go

@@ -11,7 +11,7 @@ import (
 
 // Stmt is a prepared statement object.
 //
-// https://www.sqlite.org/c3ref/stmt.html
+// https://sqlite.org/c3ref/stmt.html
 type Stmt struct {
 	c      *Conn
 	err    error
@@ -22,33 +22,49 @@ type Stmt struct {
 //
 // It is safe to close a nil, zero or closed Stmt.
 //
-// https://www.sqlite.org/c3ref/finalize.html
+// https://sqlite.org/c3ref/finalize.html
 func (s *Stmt) Close() error {
 	if s == nil || s.handle == 0 {
 		return nil
 	}
 
-	r := s.c.call(s.c.api.finalize, uint64(s.handle))
+	r := s.c.call("sqlite3_finalize", uint64(s.handle))
 
 	s.handle = 0
 	return s.c.error(r)
 }
 
+// Conn returns the database connection to which the prepared statement belongs.
+//
+// https://sqlite.org/c3ref/db_handle.html
+func (s *Stmt) Conn() *Conn {
+	return s.c
+}
+
+// ReadOnly returns true if and only if the statement
+// makes no direct changes to the content of the database file.
+//
+// https://sqlite.org/c3ref/stmt_readonly.html
+func (s *Stmt) ReadOnly() bool {
+	r := s.c.call("sqlite3_stmt_readonly", uint64(s.handle))
+	return r != 0
+}
+
 // Reset resets the prepared statement object.
 //
-// https://www.sqlite.org/c3ref/reset.html
+// https://sqlite.org/c3ref/reset.html
 func (s *Stmt) Reset() error {
-	r := s.c.call(s.c.api.reset, uint64(s.handle))
+	r := s.c.call("sqlite3_reset", uint64(s.handle))
 	s.err = nil
 	return s.c.error(r)
 }
 
-// ClearBindings resets all bindings on the prepared statement.
+// Busy determines if a prepared statement has been reset.
 //
-// https://www.sqlite.org/c3ref/clear_bindings.html
-func (s *Stmt) ClearBindings() error {
-	r := s.c.call(s.c.api.clearBindings, uint64(s.handle))
-	return s.c.error(r)
+// https://sqlite.org/c3ref/stmt_busy.html
+func (s *Stmt) Busy() bool {
+	r := s.c.call("sqlite3_stmt_busy", uint64(s.handle))
+	return r != 0
 }
 
 // Step evaluates the SQL statement.
@@ -59,12 +75,13 @@ func (s *Stmt) ClearBindings() error {
 // If an error has occurred, Step returns false;
 // call [Stmt.Err] or [Stmt.Reset] to get the error.
 //
-// https://www.sqlite.org/c3ref/step.html
+// https://sqlite.org/c3ref/step.html
 func (s *Stmt) Step() bool {
 	s.c.checkInterrupt()
-	r := s.c.call(s.c.api.step, uint64(s.handle))
+	r := s.c.call("sqlite3_step", uint64(s.handle))
 	switch r {
 	case _ROW:
+		s.err = nil
 		return true
 	case _DONE:
 		s.err = nil
@@ -77,7 +94,7 @@ func (s *Stmt) Step() bool {
 // Err gets the last error occurred during [Stmt.Step].
 // Err returns nil after [Stmt.Reset] is called.
 //
-// https://www.sqlite.org/c3ref/step.html
+// https://sqlite.org/c3ref/step.html
 func (s *Stmt) Err() error {
 	return s.err
 }
@@ -90,11 +107,32 @@ func (s *Stmt) Exec() error {
 	return s.Reset()
 }
 
+// Status monitors the performance characteristics of prepared statements.
+//
+// https://sqlite.org/c3ref/stmt_status.html
+func (s *Stmt) Status(op StmtStatus, reset bool) int {
+	var i uint64
+	if reset {
+		i = 1
+	}
+	r := s.c.call("sqlite3_stmt_status", uint64(s.handle),
+		uint64(op), i)
+	return int(r)
+}
+
+// ClearBindings resets all bindings on the prepared statement.
+//
+// https://sqlite.org/c3ref/clear_bindings.html
+func (s *Stmt) ClearBindings() error {
+	r := s.c.call("sqlite3_clear_bindings", uint64(s.handle))
+	return s.c.error(r)
+}
+
 // BindCount returns the number of SQL parameters in the prepared statement.
 //
-// https://www.sqlite.org/c3ref/bind_parameter_count.html
+// https://sqlite.org/c3ref/bind_parameter_count.html
 func (s *Stmt) BindCount() int {
-	r := s.c.call(s.c.api.bindCount,
+	r := s.c.call("sqlite3_bind_parameter_count",
 		uint64(s.handle))
 	return int(r)
 }
@@ -102,11 +140,11 @@ func (s *Stmt) BindCount() int {
 // BindIndex returns the index of a parameter in the prepared statement
 // given its name.
 //
-// https://www.sqlite.org/c3ref/bind_parameter_index.html
+// https://sqlite.org/c3ref/bind_parameter_index.html
 func (s *Stmt) BindIndex(name string) int {
-	defer s.c.arena.reset()
+	defer s.c.arena.mark()()
 	namePtr := s.c.arena.string(name)
-	r := s.c.call(s.c.api.bindIndex,
+	r := s.c.call("sqlite3_bind_parameter_index",
 		uint64(s.handle), uint64(namePtr))
 	return int(r)
 }
@@ -114,16 +152,16 @@ func (s *Stmt) BindIndex(name string) int {
 // BindName returns the name of a parameter in the prepared statement.
 // The leftmost SQL parameter has an index of 1.
 //
-// https://www.sqlite.org/c3ref/bind_parameter_name.html
+// https://sqlite.org/c3ref/bind_parameter_name.html
 func (s *Stmt) BindName(param int) string {
-	r := s.c.call(s.c.api.bindName,
+	r := s.c.call("sqlite3_bind_parameter_name",
 		uint64(s.handle), uint64(param))
 
 	ptr := uint32(r)
 	if ptr == 0 {
 		return ""
 	}
-	return util.ReadString(s.c.mod, ptr, _MAX_STRING)
+	return util.ReadString(s.c.mod, ptr, _MAX_NAME)
 }
 
 // BindBool binds a bool to the prepared statement.
@@ -131,7 +169,7 @@ func (s *Stmt) BindName(param int) string {
 // SQLite does not have a separate boolean storage class.
 // Instead, boolean values are stored as integers 0 (false) and 1 (true).
 //
-// https://www.sqlite.org/c3ref/bind_blob.html
+// https://sqlite.org/c3ref/bind_blob.html
 func (s *Stmt) BindBool(param int, value bool) error {
 	var i int64
 	if value {
@@ -143,7 +181,7 @@ func (s *Stmt) BindBool(param int, value bool) error {
 // BindInt binds an int to the prepared statement.
 // The leftmost SQL parameter has an index of 1.
 //
-// https://www.sqlite.org/c3ref/bind_blob.html
+// https://sqlite.org/c3ref/bind_blob.html
 func (s *Stmt) BindInt(param int, value int) error {
 	return s.BindInt64(param, int64(value))
 }
@@ -151,9 +189,9 @@ func (s *Stmt) BindInt(param int, value int) error {
 // BindInt64 binds an int64 to the prepared statement.
 // The leftmost SQL parameter has an index of 1.
 //
-// https://www.sqlite.org/c3ref/bind_blob.html
+// https://sqlite.org/c3ref/bind_blob.html
 func (s *Stmt) BindInt64(param int, value int64) error {
-	r := s.c.call(s.c.api.bindInteger,
+	r := s.c.call("sqlite3_bind_int64",
 		uint64(s.handle), uint64(param), uint64(value))
 	return s.c.error(r)
 }
@@ -161,9 +199,9 @@ func (s *Stmt) BindInt64(param int, value int64) error {
 // BindFloat binds a float64 to the prepared statement.
 // The leftmost SQL parameter has an index of 1.
 //
-// https://www.sqlite.org/c3ref/bind_blob.html
+// https://sqlite.org/c3ref/bind_blob.html
 func (s *Stmt) BindFloat(param int, value float64) error {
-	r := s.c.call(s.c.api.bindFloat,
+	r := s.c.call("sqlite3_bind_double",
 		uint64(s.handle), uint64(param), math.Float64bits(value))
 	return s.c.error(r)
 }
@@ -171,13 +209,32 @@ func (s *Stmt) BindFloat(param int, value float64) error {
 // BindText binds a string to the prepared statement.
 // The leftmost SQL parameter has an index of 1.
 //
-// https://www.sqlite.org/c3ref/bind_blob.html
+// https://sqlite.org/c3ref/bind_blob.html
 func (s *Stmt) BindText(param int, value string) error {
+	if len(value) > _MAX_LENGTH {
+		return TOOBIG
+	}
 	ptr := s.c.newString(value)
-	r := s.c.call(s.c.api.bindText,
+	r := s.c.call("sqlite3_bind_text64",
 		uint64(s.handle), uint64(param),
 		uint64(ptr), uint64(len(value)),
-		uint64(s.c.api.destructor), _UTF8)
+		uint64(s.c.freer), _UTF8)
+	return s.c.error(r)
+}
+
+// BindRawText binds a []byte to the prepared statement as text.
+// The leftmost SQL parameter has an index of 1.
+//
+// https://sqlite.org/c3ref/bind_blob.html
+func (s *Stmt) BindRawText(param int, value []byte) error {
+	if len(value) > _MAX_LENGTH {
+		return TOOBIG
+	}
+	ptr := s.c.newBytes(value)
+	r := s.c.call("sqlite3_bind_text64",
+		uint64(s.handle), uint64(param),
+		uint64(ptr), uint64(len(value)),
+		uint64(s.c.freer), _UTF8)
 	return s.c.error(r)
 }
 
@@ -185,22 +242,25 @@ func (s *Stmt) BindText(param int, value string) error {
 // The leftmost SQL parameter has an index of 1.
 // Binding a nil slice is the same as calling [Stmt.BindNull].
 //
-// https://www.sqlite.org/c3ref/bind_blob.html
+// https://sqlite.org/c3ref/bind_blob.html
 func (s *Stmt) BindBlob(param int, value []byte) error {
+	if len(value) > _MAX_LENGTH {
+		return TOOBIG
+	}
 	ptr := s.c.newBytes(value)
-	r := s.c.call(s.c.api.bindBlob,
+	r := s.c.call("sqlite3_bind_blob64",
 		uint64(s.handle), uint64(param),
 		uint64(ptr), uint64(len(value)),
-		uint64(s.c.api.destructor))
+		uint64(s.c.freer))
 	return s.c.error(r)
 }
 
 // BindZeroBlob binds a zero-filled, length n BLOB to the prepared statement.
 // The leftmost SQL parameter has an index of 1.
 //
-// https://www.sqlite.org/c3ref/bind_blob.html
+// https://sqlite.org/c3ref/bind_blob.html
 func (s *Stmt) BindZeroBlob(param int, n int64) error {
-	r := s.c.call(s.c.api.bindZeroBlob,
+	r := s.c.call("sqlite3_bind_zeroblob64",
 		uint64(s.handle), uint64(param), uint64(n))
 	return s.c.error(r)
 }
@@ -208,9 +268,9 @@ func (s *Stmt) BindZeroBlob(param int, n int64) error {
 // BindNull binds a NULL to the prepared statement.
 // The leftmost SQL parameter has an index of 1.
 //
-// https://www.sqlite.org/c3ref/bind_blob.html
+// https://sqlite.org/c3ref/bind_blob.html
 func (s *Stmt) BindNull(param int) error {
-	r := s.c.call(s.c.api.bindNull,
+	r := s.c.call("sqlite3_bind_null",
 		uint64(s.handle), uint64(param))
 	return s.c.error(r)
 }
@@ -218,7 +278,7 @@ func (s *Stmt) BindNull(param int) error {
 // BindTime binds a [time.Time] to the prepared statement.
 // The leftmost SQL parameter has an index of 1.
 //
-// https://www.sqlite.org/c3ref/bind_blob.html
+// https://sqlite.org/c3ref/bind_blob.html
 func (s *Stmt) BindTime(param int, value time.Time, format TimeFormat) error {
 	if format == TimeFormatDefault {
 		return s.bindRFC3339Nano(param, value)
@@ -243,21 +303,22 @@ func (s *Stmt) bindRFC3339Nano(param int, value time.Time) error {
 	buf := util.View(s.c.mod, ptr, maxlen)
 	buf = value.AppendFormat(buf[:0], time.RFC3339Nano)
 
-	r := s.c.call(s.c.api.bindText,
+	r := s.c.call("sqlite3_bind_text64",
 		uint64(s.handle), uint64(param),
 		uint64(ptr), uint64(len(buf)),
-		uint64(s.c.api.destructor), _UTF8)
+		uint64(s.c.freer), _UTF8)
 	return s.c.error(r)
 }
 
 // BindPointer binds a NULL to the prepared statement, just like [Stmt.BindNull],
 // but it also associates ptr with that NULL value such that it can be retrieved
 // within an application-defined SQL function using [Value.Pointer].
+// The leftmost SQL parameter has an index of 1.
 //
-// https://www.sqlite.org/c3ref/bind_blob.html
+// https://sqlite.org/c3ref/bind_blob.html
 func (s *Stmt) BindPointer(param int, ptr any) error {
 	valPtr := util.AddHandle(s.c.ctx, ptr)
-	r := s.c.call(s.c.api.bindPointer,
+	r := s.c.call("sqlite3_bind_pointer_go",
 		uint64(s.handle), uint64(param), uint64(valPtr))
 	return s.c.error(r)
 }
@@ -265,25 +326,33 @@ func (s *Stmt) BindPointer(param int, ptr any) error {
 // BindJSON binds the JSON encoding of value to the prepared statement.
 // The leftmost SQL parameter has an index of 1.
 //
-// https://www.sqlite.org/c3ref/bind_blob.html
+// https://sqlite.org/c3ref/bind_blob.html
 func (s *Stmt) BindJSON(param int, value any) error {
 	data, err := json.Marshal(value)
 	if err != nil {
 		return err
 	}
-	ptr := s.c.newBytes(data)
-	r := s.c.call(s.c.api.bindText,
-		uint64(s.handle), uint64(param),
-		uint64(ptr), uint64(len(data)),
-		uint64(s.c.api.destructor), _UTF8)
+	return s.BindRawText(param, data)
+}
+
+// BindValue binds a copy of value to the prepared statement.
+// The leftmost SQL parameter has an index of 1.
+//
+// https://sqlite.org/c3ref/bind_blob.html
+func (s *Stmt) BindValue(param int, value Value) error {
+	if value.sqlite != s.c.sqlite {
+		return MISUSE
+	}
+	r := s.c.call("sqlite3_bind_value",
+		uint64(s.handle), uint64(param), uint64(value.handle))
 	return s.c.error(r)
 }
 
 // ColumnCount returns the number of columns in a result set.
 //
-// https://www.sqlite.org/c3ref/column_count.html
+// https://sqlite.org/c3ref/column_count.html
 func (s *Stmt) ColumnCount() int {
-	r := s.c.call(s.c.api.columnCount,
+	r := s.c.call("sqlite3_column_count",
 		uint64(s.handle))
 	return int(r)
 }
@@ -291,35 +360,48 @@ func (s *Stmt) ColumnCount() int {
 // ColumnName returns the name of the result column.
 // The leftmost column of the result set has the index 0.
 //
-// https://www.sqlite.org/c3ref/column_name.html
+// https://sqlite.org/c3ref/column_name.html
 func (s *Stmt) ColumnName(col int) string {
-	r := s.c.call(s.c.api.columnName,
+	r := s.c.call("sqlite3_column_name",
 		uint64(s.handle), uint64(col))
 
 	ptr := uint32(r)
 	if ptr == 0 {
 		panic(util.OOMErr)
 	}
-	return util.ReadString(s.c.mod, ptr, _MAX_STRING)
+	return util.ReadString(s.c.mod, ptr, _MAX_NAME)
 }
 
 // ColumnType returns the initial [Datatype] of the result column.
 // The leftmost column of the result set has the index 0.
 //
-// https://www.sqlite.org/c3ref/column_blob.html
+// https://sqlite.org/c3ref/column_blob.html
 func (s *Stmt) ColumnType(col int) Datatype {
-	r := s.c.call(s.c.api.columnType,
+	r := s.c.call("sqlite3_column_type",
 		uint64(s.handle), uint64(col))
 	return Datatype(r)
 }
 
+// ColumnDeclType returns the declared datatype of the result column.
+// The leftmost column of the result set has the index 0.
+//
+// https://sqlite.org/c3ref/column_decltype.html
+func (s *Stmt) ColumnDeclType(col int) string {
+	r := s.c.call("sqlite3_column_decltype",
+		uint64(s.handle), uint64(col))
+	if r == 0 {
+		return ""
+	}
+	return util.ReadString(s.c.mod, uint32(r), _MAX_NAME)
+}
+
 // ColumnBool returns the value of the result column as a bool.
 // The leftmost column of the result set has the index 0.
 // SQLite does not have a separate boolean storage class.
 // Instead, boolean values are retrieved as integers,
 // with 0 converted to false and any other value to true.
 //
-// https://www.sqlite.org/c3ref/column_blob.html
+// https://sqlite.org/c3ref/column_blob.html
 func (s *Stmt) ColumnBool(col int) bool {
 	if i := s.ColumnInt64(col); i != 0 {
 		return true
@@ -330,7 +412,7 @@ func (s *Stmt) ColumnBool(col int) bool {
 // ColumnInt returns the value of the result column as an int.
 // The leftmost column of the result set has the index 0.
 //
-// https://www.sqlite.org/c3ref/column_blob.html
+// https://sqlite.org/c3ref/column_blob.html
 func (s *Stmt) ColumnInt(col int) int {
 	return int(s.ColumnInt64(col))
 }
@@ -338,9 +420,9 @@ func (s *Stmt) ColumnInt(col int) int {
 // ColumnInt64 returns the value of the result column as an int64.
 // The leftmost column of the result set has the index 0.
 //
-// https://www.sqlite.org/c3ref/column_blob.html
+// https://sqlite.org/c3ref/column_blob.html
 func (s *Stmt) ColumnInt64(col int) int64 {
-	r := s.c.call(s.c.api.columnInteger,
+	r := s.c.call("sqlite3_column_int64",
 		uint64(s.handle), uint64(col))
 	return int64(r)
 }
@@ -348,9 +430,9 @@ func (s *Stmt) ColumnInt64(col int) int64 {
 // ColumnFloat returns the value of the result column as a float64.
 // The leftmost column of the result set has the index 0.
 //
-// https://www.sqlite.org/c3ref/column_blob.html
+// https://sqlite.org/c3ref/column_blob.html
 func (s *Stmt) ColumnFloat(col int) float64 {
-	r := s.c.call(s.c.api.columnFloat,
+	r := s.c.call("sqlite3_column_double",
 		uint64(s.handle), uint64(col))
 	return math.Float64frombits(r)
 }
@@ -358,7 +440,7 @@ func (s *Stmt) ColumnFloat(col int) float64 {
 // ColumnTime returns the value of the result column as a [time.Time].
 // The leftmost column of the result set has the index 0.
 //
-// https://www.sqlite.org/c3ref/column_blob.html
+// https://sqlite.org/c3ref/column_blob.html
 func (s *Stmt) ColumnTime(col int, format TimeFormat) time.Time {
 	var v any
 	switch s.ColumnType(col) {
@@ -383,7 +465,7 @@ func (s *Stmt) ColumnTime(col int, format TimeFormat) time.Time {
 // ColumnText returns the value of the result column as a string.
 // The leftmost column of the result set has the index 0.
 //
-// https://www.sqlite.org/c3ref/column_blob.html
+// https://sqlite.org/c3ref/column_blob.html
 func (s *Stmt) ColumnText(col int) string {
 	return string(s.ColumnRawText(col))
 }
@@ -392,7 +474,7 @@ func (s *Stmt) ColumnText(col int) string {
 // the value of the result column as a []byte.
 // The leftmost column of the result set has the index 0.
 //
-// https://www.sqlite.org/c3ref/column_blob.html
+// https://sqlite.org/c3ref/column_blob.html
 func (s *Stmt) ColumnBlob(col int, buf []byte) []byte {
 	return append(buf, s.ColumnRawBlob(col)...)
 }
@@ -402,9 +484,9 @@ func (s *Stmt) ColumnBlob(col int, buf []byte) []byte {
 // subsequent calls to [Stmt] methods.
 // The leftmost column of the result set has the index 0.
 //
-// https://www.sqlite.org/c3ref/column_blob.html
+// https://sqlite.org/c3ref/column_blob.html
 func (s *Stmt) ColumnRawText(col int) []byte {
-	r := s.c.call(s.c.api.columnText,
+	r := s.c.call("sqlite3_column_text",
 		uint64(s.handle), uint64(col))
 	return s.columnRawBytes(col, uint32(r))
 }
@@ -414,21 +496,21 @@ func (s *Stmt) ColumnRawText(col int) []byte {
 // subsequent calls to [Stmt] methods.
 // The leftmost column of the result set has the index 0.
 //
-// https://www.sqlite.org/c3ref/column_blob.html
+// https://sqlite.org/c3ref/column_blob.html
 func (s *Stmt) ColumnRawBlob(col int) []byte {
-	r := s.c.call(s.c.api.columnBlob,
+	r := s.c.call("sqlite3_column_blob",
 		uint64(s.handle), uint64(col))
 	return s.columnRawBytes(col, uint32(r))
 }
 
 func (s *Stmt) columnRawBytes(col int, ptr uint32) []byte {
 	if ptr == 0 {
-		r := s.c.call(s.c.api.errcode, uint64(s.c.handle))
+		r := s.c.call("sqlite3_errcode", uint64(s.c.handle))
 		s.err = s.c.error(r)
 		return nil
 	}
 
-	r := s.c.call(s.c.api.columnBytes,
+	r := s.c.call("sqlite3_column_bytes",
 		uint64(s.handle), uint64(col))
 	return util.View(s.c.mod, ptr, r)
 }
@@ -437,7 +519,7 @@ func (s *Stmt) columnRawBytes(col int, ptr uint32) []byte {
 // and stores it in the value pointed to by ptr.
 // The leftmost column of the result set has the index 0.
 //
-// https://www.sqlite.org/c3ref/column_blob.html
+// https://sqlite.org/c3ref/column_blob.html
 func (s *Stmt) ColumnJSON(col int, ptr any) error {
 	var data []byte
 	switch s.ColumnType(col) {
@@ -457,17 +539,16 @@ func (s *Stmt) ColumnJSON(col int, ptr any) error {
 	return json.Unmarshal(data, ptr)
 }
 
-// Return true if stmt is an empty SQL statement.
-// This is used as an optimization.
-// It's OK to always return false here.
-func emptyStatement(stmt string) bool {
-	for _, b := range []byte(stmt) {
-		switch b {
-		case ' ', '\n', '\r', '\t', '\v', '\f':
-		case ';':
-		default:
-			return false
-		}
+// ColumnValue returns the unprotected value of the result column.
+// The leftmost column of the result set has the index 0.
+//
+// https://sqlite.org/c3ref/column_blob.html
+func (s *Stmt) ColumnValue(col int) Value {
+	r := s.c.call("sqlite3_column_value",
+		uint64(s.handle), uint64(col))
+	return Value{
+		unprot: true,
+		sqlite: s.c.sqlite,
+		handle: uint32(r),
 	}
-	return true
 }

stmt_test.go

@@ -1,60 +0,0 @@
-package sqlite3
-
-import (
-	"testing"
-)
-
-func Test_emptyStatement(t *testing.T) {
-	t.Parallel()
-
-	tests := []struct {
-		name string
-		stmt string
-		want bool
-	}{
-		{"empty", "", true},
-		{"space", " ", true},
-		{"separator", ";\n ", true},
-		{"begin", "BEGIN", false},
-		{"select", "SELECT 1;", false},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			if got := emptyStatement(tt.stmt); got != tt.want {
-				t.Errorf("got %v, want %v", got, tt.want)
-			}
-		})
-	}
-}
-
-func Fuzz_emptyStatement(f *testing.F) {
-	f.Add("")
-	f.Add(" ")
-	f.Add(";\n ")
-	f.Add("; ;\v")
-	f.Add("BEGIN")
-	f.Add("SELECT 1;")
-
-	db, err := Open(":memory:")
-	if err != nil {
-		f.Fatal(err)
-	}
-	defer db.Close()
-
-	f.Fuzz(func(t *testing.T, sql string) {
-		// If empty, SQLite parses it as empty.
-		if emptyStatement(sql) {
-			stmt, tail, err := db.Prepare(sql)
-			if err != nil {
-				t.Errorf("%q, %v", sql, err)
-			}
-			if stmt != nil {
-				t.Errorf("%q, %v", sql, stmt)
-			}
-			if tail != "" {
-				t.Errorf("%q", sql)
-			}
-			stmt.Close()
-		}
-	})
-}

tests/conn_test.go

@@ -75,8 +75,8 @@ func TestConn_Open_modeof(t *testing.T) {
 }
 
 func TestConn_Close(t *testing.T) {
-	var conn *sqlite3.Conn
-	conn.Close()
+	var db *sqlite3.Conn
+	db.Close()
 }
 
 func TestConn_Close_BUSY(t *testing.T) {

tests/db_test.go

@@ -15,6 +15,9 @@ import (
 //go:embed testdata/wal.db
 var waldb []byte
 
+//go:embed testdata/utf16be.db
+var utf16db []byte
+
 func TestDB_memory(t *testing.T) {
 	t.Parallel()
 	testDB(t, ":memory:")
@@ -34,19 +37,29 @@ func TestDB_nolock(t *testing.T) {
 
 func TestDB_wal(t *testing.T) {
 	t.Parallel()
-	wal := filepath.Join(t.TempDir(), "test.db")
-	err := os.WriteFile(wal, waldb, 0666)
+	tmp := filepath.Join(t.TempDir(), "test.db")
+	err := os.WriteFile(tmp, waldb, 0666)
 	if err != nil {
 		t.Fatal(err)
 	}
-	testDB(t, wal)
+	testDB(t, tmp)
+}
+
+func TestDB_utf16(t *testing.T) {
+	t.Parallel()
+	tmp := filepath.Join(t.TempDir(), "test.db")
+	err := os.WriteFile(tmp, utf16db, 0666)
+	if err != nil {
+		t.Fatal(err)
+	}
+	testDB(t, tmp)
 }
 
 func TestDB_vfs(t *testing.T) {
 	testDB(t, "file:test.db?vfs=memdb")
 }
 
-func testDB(t *testing.T, name string) {
+func testDB(t testing.TB, name string) {
 	db, err := sqlite3.Open(name)
 	if err != nil {
 		t.Fatal(err)
@@ -80,6 +93,9 @@ func testDB(t *testing.T, name string) {
 		id := stmt.ColumnInt(0)
 		name := stmt.ColumnText(1)
 
+		if row >= 3 {
+			continue
+		}
 		if id != ids[row] {
 			t.Errorf("got %d, want %d", id, ids[row])
 		}

tests/driver_test.go

@@ -72,6 +72,17 @@ func TestDriver(t *testing.T) {
 	}
 	defer rows.Close()
 
+	typs, err := rows.ColumnTypes()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if got := typs[0].DatabaseTypeName(); got != "INT" {
+		t.Errorf("got %s, want INT", got)
+	}
+	if got := typs[1].DatabaseTypeName(); got != "VARCHAR" {
+		t.Errorf("got %s, want INT", got)
+	}
+
 	row := 0
 	ids := []int{0, 1, 2}
 	names := []string{"go", "zig", "whatever"}

tests/ext_test.go

@@ -4,6 +4,7 @@ import (
 	"testing"
 
 	"github.com/ncruces/go-sqlite3"
+	_ "github.com/ncruces/go-sqlite3/embed"
 )
 
 func Test_base64(t *testing.T) {

tests/json_test.go

@@ -1,6 +1,7 @@
 package tests
 
 import (
+	"context"
 	"encoding/json"
 	"math"
 	"testing"
@@ -8,26 +9,36 @@ import (
 
 	"github.com/ncruces/go-sqlite3"
 	"github.com/ncruces/go-sqlite3/driver"
+	_ "github.com/ncruces/go-sqlite3/embed"
 	"github.com/ncruces/julianday"
 )
 
 func TestJSON(t *testing.T) {
 	t.Parallel()
 
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
 	db, err := driver.Open(":memory:", nil)
 	if err != nil {
 		t.Fatal(err)
 	}
 	defer db.Close()
 
-	_, err = db.Exec(`CREATE TABLE IF NOT EXISTS test (col)`)
+	conn, err := db.Conn(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer conn.Close()
+
+	_, err = conn.ExecContext(ctx, `CREATE TABLE IF NOT EXISTS test (col)`)
 	if err != nil {
 		t.Fatal(err)
 	}
 
 	reference := time.Date(2013, 10, 7, 4, 23, 19, 120_000_000, time.FixedZone("", -4*3600))
 
-	_, err = db.Exec(
+	_, err = conn.ExecContext(ctx,
 		`INSERT INTO test (col) VALUES (?), (?), (?), (?)`,
 		nil, 1, math.Pi, reference,
 	)
@@ -35,7 +46,7 @@ func TestJSON(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	_, err = db.Exec(
+	_, err = conn.ExecContext(ctx,
 		`INSERT INTO test (col) VALUES (?), (?), (?), (?)`,
 		sqlite3.JSON(math.Pi), sqlite3.JSON(false),
 		julianday.Format(reference), sqlite3.JSON([]string{}))
@@ -43,10 +54,11 @@ func TestJSON(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	rows, err := db.Query("SELECT * FROM test")
+	rows, err := conn.QueryContext(ctx, "SELECT * FROM test")
 	if err != nil {
 		t.Fatal(err)
 	}
+	defer rows.Close()
 
 	want := []string{
 		"null", "1", "3.141592653589793",

tests/parallel/parallel_test.go

@@ -11,7 +11,7 @@ import (
 
 	"github.com/ncruces/go-sqlite3"
 	_ "github.com/ncruces/go-sqlite3/embed"
-	_ "github.com/ncruces/go-sqlite3/vfs/memdb"
+	"github.com/ncruces/go-sqlite3/vfs/memdb"
 )
 
 func TestParallel(t *testing.T) {
@@ -96,7 +96,16 @@ func TestChildProcess(t *testing.T) {
 	testParallel(t, name, 1000)
 }
 
-func testParallel(t *testing.T, name string, n int) {
+func BenchmarkMemory(b *testing.B) {
+	memdb.Delete("test.db")
+	name := "file:/test.db?vfs=memdb" +
+		"&_pragma=busy_timeout(10000)" +
+		"&_pragma=journal_mode(memory)" +
+		"&_pragma=synchronous(off)"
+	testParallel(b, name, b.N)
+}
+
+func testParallel(t testing.TB, name string, n int) {
 	writer := func() error {
 		db, err := sqlite3.Open(name)
 		if err != nil {
@@ -174,7 +183,7 @@ func testParallel(t *testing.T, name string, n int) {
 	}
 }
 
-func testIntegrity(t *testing.T, name string) {
+func testIntegrity(t testing.TB, name string) {
 	db, err := sqlite3.Open(name)
 	if err != nil {
 		t.Fatal(err)

tests/stmt_test.go

@@ -7,6 +7,7 @@ import (
 	"time"
 
 	"github.com/ncruces/go-sqlite3"
+	_ "github.com/ncruces/go-sqlite3/embed"
 )
 
 func TestStmt(t *testing.T) {
@@ -29,6 +30,10 @@ func TestStmt(t *testing.T) {
 	}
 	defer stmt.Close()
 
+	if got := stmt.ReadOnly(); got != false {
+		t.Error("got true, want false")
+	}
+
 	if got := stmt.BindCount(); got != 1 {
 		t.Errorf("got %d, want 1", got)
 	}
@@ -136,6 +141,10 @@ func TestStmt(t *testing.T) {
 	}
 	defer stmt.Close()
 
+	if got := stmt.ReadOnly(); got != true {
+		t.Error("got false, want true")
+	}
+
 	if stmt.Step() {
 		if got := stmt.ColumnType(0); got != sqlite3.INTEGER {
 			t.Errorf("got %v, want INTEGER", got)
@@ -585,4 +594,61 @@ func TestStmt_ColumnTime(t *testing.T) {
 			t.Errorf("want error")
 		}
 	}
+
+	if got := stmt.Status(sqlite3.STMTSTATUS_RUN, true); got != 1 {
+		t.Errorf("got %d, want 1", got)
+	}
+}
+
+func TestStmt_Error(t *testing.T) {
+	t.Parallel()
+
+	db, err := sqlite3.Open(":memory:")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	var blob [1e9 + 1]byte
+
+	_, _, err = db.Prepare(string(blob[:]))
+	if err == nil {
+		t.Errorf("want error")
+	} else {
+		t.Log(err)
+	}
+
+	stmt, _, err := db.Prepare(`SELECT ?`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer stmt.Close()
+
+	err = stmt.BindText(1, string(blob[:]))
+	if err == nil {
+		t.Errorf("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = stmt.BindBlob(1, blob[:])
+	if err == nil {
+		t.Errorf("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = stmt.BindRawText(1, blob[:])
+	if err == nil {
+		t.Errorf("want error")
+	} else {
+		t.Log(err)
+	}
+
+	err = stmt.BindZeroBlob(1, 1e9+1)
+	if err == nil {
+		t.Errorf("want error")
+	} else {
+		t.Log(err)
+	}
 }

tests/time_test.go

@@ -1,6 +1,7 @@
 package tests
 
 import (
+	"context"
 	"fmt"
 	"reflect"
 	"testing"
@@ -8,6 +9,7 @@ import (
 
 	"github.com/ncruces/go-sqlite3"
 	"github.com/ncruces/go-sqlite3/driver"
+	_ "github.com/ncruces/go-sqlite3/embed"
 )
 
 func TestTimeFormat_Encode(t *testing.T) {
@@ -129,13 +131,22 @@ func TestTimeFormat_Decode(t *testing.T) {
 func TestTimeFormat_Scanner(t *testing.T) {
 	t.Parallel()
 
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
 	db, err := driver.Open(":memory:", nil)
 	if err != nil {
 		t.Fatal(err)
 	}
 	defer db.Close()
 
-	_, err = db.Exec(
+	conn, err := db.Conn(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer conn.Close()
+
+	_, err = conn.ExecContext(ctx,
 		`CREATE TABLE IF NOT EXISTS test (col)`)
 	if err != nil {
 		t.Fatal(err)
@@ -143,13 +154,13 @@ func TestTimeFormat_Scanner(t *testing.T) {
 
 	reference := time.Date(2013, 10, 7, 4, 23, 19, 120_000_000, time.FixedZone("", -4*3600))
 
-	_, err = db.Exec(`INSERT INTO test VALUES (?)`, sqlite3.TimeFormat7TZ.Encode(reference))
+	_, err = conn.ExecContext(ctx, `INSERT INTO test VALUES (?)`, sqlite3.TimeFormat7TZ.Encode(reference))
 	if err != nil {
 		t.Fatal(err)
 	}
 
 	var got time.Time
-	err = db.QueryRow("SELECT * FROM test").Scan(sqlite3.TimeFormatAuto.Scanner(&got))
+	err = conn.QueryRowContext(ctx, "SELECT * FROM test").Scan(sqlite3.TimeFormatAuto.Scanner(&got))
 	if err != nil {
 		t.Fatal(err)
 	}

tests/tx_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	"github.com/ncruces/go-sqlite3"
+	_ "github.com/ncruces/go-sqlite3/embed"
 )
 
 func TestConn_Transaction_exec(t *testing.T) {

tests/vfs_test.go

@@ -5,7 +5,6 @@ import (
 	"testing"
 
 	"github.com/ncruces/go-sqlite3"
-	_ "github.com/ncruces/go-sqlite3/driver"
 	_ "github.com/ncruces/go-sqlite3/embed"
 	"github.com/ncruces/go-sqlite3/vfs/memdb"
 	"github.com/ncruces/go-sqlite3/vfs/readervfs"

time.go

@@ -15,12 +15,12 @@ import (
 // See the documentation for the [TimeFormatDefault] constant
 // for formats recognized by SQLite.
 //
-// https://www.sqlite.org/lang_datefunc.html
+// https://sqlite.org/lang_datefunc.html
 type TimeFormat string
 
 // TimeFormats recognized by SQLite to encode/decode time values.
 //
-// https://www.sqlite.org/lang_datefunc.html
+// https://sqlite.org/lang_datefunc.html#time_values
 const (
 	TimeFormatDefault TimeFormat = "" // time.RFC3339Nano
 
@@ -83,9 +83,9 @@ const (
 // a float64 for [TimeFormatJulianDay] and [TimeFormatUnixFrac],
 // or an int64 for the other numeric formats.
 //
-// https://www.sqlite.org/lang_datefunc.html
+// https://sqlite.org/lang_datefunc.html
 //
-// [collating sequence]: https://www.sqlite.org/datatype3.html#collating_sequences
+// [collating sequence]: https://sqlite.org/datatype3.html#collating_sequences
 func (f TimeFormat) Encode(t time.Time) any {
 	switch f {
 	// Numeric formats
@@ -136,7 +136,7 @@ func (f TimeFormat) Encode(t time.Time) any {
 // Unix timestamps before 1980 and after 9999 may be misinterpreted as julian day numbers,
 // or have the wrong time unit.
 //
-// https://www.sqlite.org/lang_datefunc.html
+// https://sqlite.org/lang_datefunc.html
 func (f TimeFormat) Decode(v any) (time.Time, error) {
 	switch f {
 	// Numeric formats

tx.go

@@ -12,14 +12,14 @@ import (
 
 // Tx is an in-progress database transaction.
 //
-// https://www.sqlite.org/lang_transaction.html
+// https://sqlite.org/lang_transaction.html
 type Tx struct {
 	c *Conn
 }
 
 // Begin starts a deferred transaction.
 //
-// https://www.sqlite.org/lang_transaction.html
+// https://sqlite.org/lang_transaction.html
 func (c *Conn) Begin() Tx {
 	// BEGIN even if interrupted.
 	err := c.txExecInterrupted(`BEGIN DEFERRED`)
@@ -31,7 +31,7 @@ func (c *Conn) Begin() Tx {
 
 // BeginImmediate starts an immediate transaction.
 //
-// https://www.sqlite.org/lang_transaction.html
+// https://sqlite.org/lang_transaction.html
 func (c *Conn) BeginImmediate() (Tx, error) {
 	err := c.Exec(`BEGIN IMMEDIATE`)
 	if err != nil {
@@ -42,7 +42,7 @@ func (c *Conn) BeginImmediate() (Tx, error) {
 
 // BeginExclusive starts an exclusive transaction.
 //
-// https://www.sqlite.org/lang_transaction.html
+// https://sqlite.org/lang_transaction.html
 func (c *Conn) BeginExclusive() (Tx, error) {
 	err := c.Exec(`BEGIN EXCLUSIVE`)
 	if err != nil {
@@ -56,14 +56,14 @@ func (c *Conn) BeginExclusive() (Tx, error) {
 //
 // This is meant to be deferred:
 //
-//	func doWork(conn *sqlite3.Conn) (err error) {
-//		tx := conn.Begin()
+//	func doWork(db *sqlite3.Conn) (err error) {
+//		tx := db.Begin()
 //		defer tx.End(&err)
 //
 //		// ... do work in the transaction
 //	}
 //
-// https://www.sqlite.org/lang_transaction.html
+// https://sqlite.org/lang_transaction.html
 func (tx Tx) End(errp *error) {
 	recovered := recover()
 	if recovered != nil {
@@ -94,7 +94,7 @@ func (tx Tx) End(errp *error) {
 
 // Commit commits the transaction.
 //
-// https://www.sqlite.org/lang_transaction.html
+// https://sqlite.org/lang_transaction.html
 func (tx Tx) Commit() error {
 	return tx.c.Exec(`COMMIT`)
 }
@@ -102,7 +102,7 @@ func (tx Tx) Commit() error {
 // Rollback rolls back the transaction,
 // even if the connection has been interrupted.
 //
-// https://www.sqlite.org/lang_transaction.html
+// https://sqlite.org/lang_transaction.html
 func (tx Tx) Rollback() error {
 	return tx.c.txExecInterrupted(`ROLLBACK`)
 }
@@ -110,7 +110,7 @@ func (tx Tx) Rollback() error {
 // Savepoint is a marker within a transaction
 // that allows for partial rollback.
 //
-// https://www.sqlite.org/lang_savepoint.html
+// https://sqlite.org/lang_savepoint.html
 type Savepoint struct {
 	c    *Conn
 	name string
@@ -118,7 +118,7 @@ type Savepoint struct {
 
 // Savepoint establishes a new transaction savepoint.
 //
-// https://www.sqlite.org/lang_savepoint.html
+// https://sqlite.org/lang_savepoint.html
 func (c *Conn) Savepoint() Savepoint {
 	// Names can be reused; this makes catching bugs more likely.
 	name := saveptName() + "_" + strconv.Itoa(int(rand.Int31()))
@@ -156,8 +156,8 @@ func saveptName() (name string) {
 //
 // This is meant to be deferred:
 //
-//	func doWork(conn *sqlite3.Conn) (err error) {
-//		savept := conn.Savepoint()
+//	func doWork(db *sqlite3.Conn) (err error) {
+//		savept := db.Savepoint()
 //		defer savept.Release(&err)
 //
 //		// ... do work in the transaction
@@ -198,7 +198,7 @@ func (s Savepoint) Release(errp *error) {
 // even if the connection has been interrupted.
 // Rollback does not release the savepoint.
 //
-// https://www.sqlite.org/lang_transaction.html
+// https://sqlite.org/lang_transaction.html
 func (s Savepoint) Rollback() error {
 	// ROLLBACK even if interrupted.
 	return s.c.txExecInterrupted(fmt.Sprintf("ROLLBACK TO %q;", s.name))

value.go

@@ -11,17 +11,50 @@ import (
 
 // Value is any value that can be stored in a database table.
 //
-// https://www.sqlite.org/c3ref/value.html
+// https://sqlite.org/c3ref/value.html
 type Value struct {
 	*sqlite
 	handle uint32
+	unprot bool
+	copied bool
+}
+
+func (v Value) protected() uint64 {
+	if v.unprot {
+		panic(util.ValueErr)
+	}
+	return uint64(v.handle)
+}
+
+// Dup makes a copy of the SQL value and returns a pointer to that copy.
+//
+// https://sqlite.org/c3ref/value_dup.html
+func (v Value) Dup() *Value {
+	r := v.call("sqlite3_value_dup", uint64(v.handle))
+	return &Value{
+		copied: true,
+		sqlite: v.sqlite,
+		handle: uint32(r),
+	}
+}
+
+// Close frees an SQL value previously obtained by [Value.Dup].
+//
+// https://sqlite.org/c3ref/value_dup.html
+func (dup *Value) Close() error {
+	if !dup.copied {
+		panic(util.ValueErr)
+	}
+	dup.call("sqlite3_value_free", uint64(dup.handle))
+	dup.handle = 0
+	return nil
 }
 
 // Type returns the initial [Datatype] of the value.
 //
-// https://www.sqlite.org/c3ref/value_blob.html
+// https://sqlite.org/c3ref/value_blob.html
 func (v Value) Type() Datatype {
-	r := v.call(v.api.valueType, uint64(v.handle))
+	r := v.call("sqlite3_value_type", v.protected())
 	return Datatype(r)
 }
 
@@ -30,7 +63,7 @@ func (v Value) Type() Datatype {
 // Instead, boolean values are retrieved as integers,
 // with 0 converted to false and any other value to true.
 //
-// https://www.sqlite.org/c3ref/value_blob.html
+// https://sqlite.org/c3ref/value_blob.html
 func (v Value) Bool() bool {
 	if i := v.Int64(); i != 0 {
 		return true
@@ -40,30 +73,30 @@ func (v Value) Bool() bool {
 
 // Int returns the value as an int.
 //
-// https://www.sqlite.org/c3ref/value_blob.html
+// https://sqlite.org/c3ref/value_blob.html
 func (v Value) Int() int {
 	return int(v.Int64())
 }
 
 // Int64 returns the value as an int64.
 //
-// https://www.sqlite.org/c3ref/value_blob.html
+// https://sqlite.org/c3ref/value_blob.html
 func (v Value) Int64() int64 {
-	r := v.call(v.api.valueInteger, uint64(v.handle))
+	r := v.call("sqlite3_value_int64", v.protected())
 	return int64(r)
 }
 
 // Float returns the value as a float64.
 //
-// https://www.sqlite.org/c3ref/value_blob.html
+// https://sqlite.org/c3ref/value_blob.html
 func (v Value) Float() float64 {
-	r := v.call(v.api.valueFloat, uint64(v.handle))
+	r := v.call("sqlite3_value_double", v.protected())
 	return math.Float64frombits(r)
 }
 
 // Time returns the value as a [time.Time].
 //
-// https://www.sqlite.org/c3ref/value_blob.html
+// https://sqlite.org/c3ref/value_blob.html
 func (v Value) Time(format TimeFormat) time.Time {
 	var a any
 	switch v.Type() {
@@ -84,7 +117,7 @@ func (v Value) Time(format TimeFormat) time.Time {
 
 // Text returns the value as a string.
 //
-// https://www.sqlite.org/c3ref/value_blob.html
+// https://sqlite.org/c3ref/value_blob.html
 func (v Value) Text() string {
 	return string(v.RawText())
 }
@@ -92,7 +125,7 @@ func (v Value) Text() string {
 // Blob appends to buf and returns
 // the value as a []byte.
 //
-// https://www.sqlite.org/c3ref/value_blob.html
+// https://sqlite.org/c3ref/value_blob.html
 func (v Value) Blob(buf []byte) []byte {
 	return append(buf, v.RawBlob()...)
 }
@@ -101,9 +134,9 @@ func (v Value) Blob(buf []byte) []byte {
 // The []byte is owned by SQLite and may be invalidated by
 // subsequent calls to [Value] methods.
 //
-// https://www.sqlite.org/c3ref/value_blob.html
+// https://sqlite.org/c3ref/value_blob.html
 func (v Value) RawText() []byte {
-	r := v.call(v.api.valueText, uint64(v.handle))
+	r := v.call("sqlite3_value_text", v.protected())
 	return v.rawBytes(uint32(r))
 }
 
@@ -111,9 +144,9 @@ func (v Value) RawText() []byte {
 // The []byte is owned by SQLite and may be invalidated by
 // subsequent calls to [Value] methods.
 //
-// https://www.sqlite.org/c3ref/value_blob.html
+// https://sqlite.org/c3ref/value_blob.html
 func (v Value) RawBlob() []byte {
-	r := v.call(v.api.valueBlob, uint64(v.handle))
+	r := v.call("sqlite3_value_blob", v.protected())
 	return v.rawBytes(uint32(r))
 }
 
@@ -122,14 +155,14 @@ func (v Value) rawBytes(ptr uint32) []byte {
 		return nil
 	}
 
-	r := v.call(v.api.valueBytes, uint64(v.handle))
+	r := v.call("sqlite3_value_bytes", v.protected())
 	return util.View(v.mod, ptr, r)
 }
 
 // Pointer gets the pointer associated with this value,
 // or nil if it has no associated pointer.
 func (v Value) Pointer() any {
-	r := v.call(v.api.valuePointer, uint64(v.handle))
+	r := v.call("sqlite3_value_pointer_go", v.protected())
 	return util.GetHandle(v.ctx, uint32(r))
 }
 

vfs/README.md

@@ -1,6 +1,6 @@
 # Go SQLite VFS API
 
-This package implements the SQLite [OS Interface](https://www.sqlite.org/vfs.html) (aka VFS).
+This package implements the SQLite [OS Interface](https://sqlite.org/vfs.html) (aka VFS).
 
 It replaces the default SQLite VFS with a pure Go implementation.
 

vfs/api.go

@@ -7,7 +7,7 @@ import "net/url"
 //
 // Use sqlite3.ErrorCode or sqlite3.ExtendedErrorCode to return specific error codes to SQLite.
 //
-// https://www.sqlite.org/c3ref/vfs.html
+// https://sqlite.org/c3ref/vfs.html
 type VFS interface {
 	Open(name string, flags OpenFlag) (File, OpenFlag, error)
 	Delete(name string, syncDir bool) error
@@ -18,7 +18,7 @@ type VFS interface {
 // VFSParams extends VFS with the ability to handle URI parameters
 // through the OpenParams method.
 //
-// https://www.sqlite.org/c3ref/uri_boolean.html
+// https://sqlite.org/c3ref/uri_boolean.html
 type VFSParams interface {
 	VFS
 	OpenParams(name string, flags OpenFlag, params url.Values) (File, OpenFlag, error)
@@ -29,7 +29,7 @@ type VFSParams interface {
 // Use sqlite3.ErrorCode or sqlite3.ExtendedErrorCode to return specific error codes to SQLite.
 // In particular, sqlite3.BUSY is necessary to correctly implement lock methods.
 //
-// https://www.sqlite.org/c3ref/io_methods.html
+// https://sqlite.org/c3ref/io_methods.html
 type File interface {
 	Close() error
 	ReadAt(p []byte, off int64) (n int, err error)
@@ -47,7 +47,7 @@ type File interface {
 // FileLockState extends File to implement the
 // SQLITE_FCNTL_LOCKSTATE file control opcode.
 //
-// https://www.sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntllockstate
+// https://sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntllockstate
 type FileLockState interface {
 	File
 	LockState() LockLevel
@@ -56,7 +56,7 @@ type FileLockState interface {
 // FileSizeHint extends File to implement the
 // SQLITE_FCNTL_SIZE_HINT file control opcode.
 //
-// https://www.sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlsizehint
+// https://sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlsizehint
 type FileSizeHint interface {
 	File
 	SizeHint(size int64) error
@@ -65,7 +65,7 @@ type FileSizeHint interface {
 // FileHasMoved extends File to implement the
 // SQLITE_FCNTL_HAS_MOVED file control opcode.
 //
-// https://www.sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlhasmoved
+// https://sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlhasmoved
 type FileHasMoved interface {
 	File
 	HasMoved() (bool, error)
@@ -74,7 +74,7 @@ type FileHasMoved interface {
 // FileOverwrite extends File to implement the
 // SQLITE_FCNTL_OVERWRITE file control opcode.
 //
-// https://www.sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntloverwrite
+// https://sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntloverwrite
 type FileOverwrite interface {
 	File
 	Overwrite() error
@@ -83,7 +83,7 @@ type FileOverwrite interface {
 // FilePowersafeOverwrite extends File to implement the
 // SQLITE_FCNTL_POWERSAFE_OVERWRITE file control opcode.
 //
-// https://www.sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlpowersafeoverwrite
+// https://sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlpowersafeoverwrite
 type FilePowersafeOverwrite interface {
 	File
 	PowersafeOverwrite() bool
@@ -93,7 +93,7 @@ type FilePowersafeOverwrite interface {
 // FilePowersafeOverwrite extends File to implement the
 // SQLITE_FCNTL_COMMIT_PHASETWO file control opcode.
 //
-// https://www.sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlcommitphasetwo
+// https://sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlcommitphasetwo
 type FileCommitPhaseTwo interface {
 	File
 	CommitPhaseTwo() error
@@ -103,7 +103,7 @@ type FileCommitPhaseTwo interface {
 // SQLITE_FCNTL_BEGIN_ATOMIC_WRITE, SQLITE_FCNTL_COMMIT_ATOMIC_WRITE
 // and SQLITE_FCNTL_ROLLBACK_ATOMIC_WRITE file control opcodes.
 //
-// https://www.sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlbeginatomicwrite
+// https://sqlite.org/c3ref/c_fcntl_begin_atomic_write.html#sqlitefcntlbeginatomicwrite
 type FileBatchAtomicWrite interface {
 	File
 	BeginAtomicWrite() error

vfs/const.go

@@ -3,12 +3,12 @@ package vfs
 import "github.com/ncruces/go-sqlite3/internal/util"
 
 const (
-	_MAX_STRING          = 512 // Used for short strings: names, error messages…
+	_MAX_NAME            = 512 // Used for short strings: names, error messages…
 	_MAX_PATHNAME        = 512
 	_DEFAULT_SECTOR_SIZE = 4096
 )
 
-// https://www.sqlite.org/rescode.html
+// https://sqlite.org/rescode.html
 type _ErrorCode uint32
 
 func (e _ErrorCode) Error() string {
@@ -49,7 +49,7 @@ const (
 
 // OpenFlag is a flag for the [VFS] Open method.
 //
-// https://www.sqlite.org/c3ref/c_open_autoproxy.html
+// https://sqlite.org/c3ref/c_open_autoproxy.html
 type OpenFlag uint32
 
 const (
@@ -78,7 +78,7 @@ const (
 
 // AccessFlag is a flag for the [VFS] Access method.
 //
-// https://www.sqlite.org/c3ref/c_access_exists.html
+// https://sqlite.org/c3ref/c_access_exists.html
 type AccessFlag uint32
 
 const (
@@ -89,7 +89,7 @@ const (
 
 // SyncFlag is a flag for the [File] Sync method.
 //
-// https://www.sqlite.org/c3ref/c_sync_dataonly.html
+// https://sqlite.org/c3ref/c_sync_dataonly.html
 type SyncFlag uint32
 
 const (
@@ -100,7 +100,7 @@ const (
 
 // LockLevel is a value used with [File] Lock and Unlock methods.
 //
-// https://www.sqlite.org/c3ref/c_lock_exclusive.html
+// https://sqlite.org/c3ref/c_lock_exclusive.html
 type LockLevel uint32
 
 const (
@@ -146,7 +146,7 @@ const (
 
 // DeviceCharacteristic is a flag retuned by the [File] DeviceCharacteristics method.
 //
-// https://www.sqlite.org/c3ref/c_iocap_atomic.html
+// https://sqlite.org/c3ref/c_iocap_atomic.html
 type DeviceCharacteristic uint32
 
 const (
@@ -167,7 +167,7 @@ const (
 	IOCAP_BATCH_ATOMIC          DeviceCharacteristic = 0x00004000
 )
 
-// https://www.sqlite.org/c3ref/c_fcntl_begin_atomic_write.html
+// https://sqlite.org/c3ref/c_fcntl_begin_atomic_write.html
 type _FcntlOpcode uint32
 
 const (

vfs/memdb/README.md

@@ -1,6 +1,6 @@
 # Go `"memdb"` SQLite VFS
 
-This package implements the [`"memdb"`](https://www.sqlite.org/src/file/src/memdb.c)
+This package implements the [`"memdb"`](https://sqlite.org/src/file/src/memdb.c)
 SQLite VFS in pure Go.
 
 It has some benefits over the C version:

vfs/memdb/api.go

@@ -36,6 +36,12 @@ func Create(name string, data []byte) {
 	db := new(memDB)
 	db.size = int64(len(data))
 
+	// Convert data from WAL to rollback journal.
+	if len(data) >= 20 && data[18] == 2 && data[19] == 2 {
+		data[18] = 1
+		data[19] = 1
+	}
+
 	sectors := divRoundUp(db.size, sectorSize)
 	db.data = make([]*[sectorSize]byte, sectors)
 	for i := range db.data {

vfs/memdb/memdb_test.go

@@ -0,0 +1,28 @@
+package memdb
+
+import (
+	"testing"
+
+	_ "embed"
+
+	"github.com/ncruces/go-sqlite3"
+	_ "github.com/ncruces/go-sqlite3/embed"
+)
+
+//go:embed testdata/wal.db
+var walDB []byte
+
+func Test_wal(t *testing.T) {
+	Create("test.db", walDB)
+
+	db, err := sqlite3.Open("file:/test.db?vfs=memdb")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	err = db.Exec(`CREATE TABLE IF NOT EXISTS users (id INT, name VARCHAR(10))`)
+	if err != nil {
+		t.Fatal(err)
+	}
+}

vfs/os_std_access.go

@@ -7,12 +7,6 @@ import (
 	"os"
 )
 
-const (
-	_S_IREAD  = 0400
-	_S_IWRITE = 0200
-	_S_IEXEC  = 0100
-)
-
 func osAccess(path string, flags AccessFlag) error {
 	fi, err := os.Stat(path)
 	if err != nil {
@@ -22,12 +16,18 @@ func osAccess(path string, flags AccessFlag) error {
 		return nil
 	}
 
-	var want fs.FileMode = _S_IREAD
+	const (
+		S_IREAD  = 0400
+		S_IWRITE = 0200
+		S_IEXEC  = 0100
+	)
+
+	var want fs.FileMode = S_IREAD
 	if flags == ACCESS_READWRITE {
-		want |= _S_IWRITE
+		want |= S_IWRITE
 	}
 	if fi.IsDir() {
-		want |= _S_IEXEC
+		want |= S_IEXEC
 	}
 	if fi.Mode()&want != want {
 		return fs.ErrPermission

vfs/readervfs/example_test.go

@@ -18,7 +18,7 @@ import (
 var testDB string
 
 func Example_http() {
-	readervfs.Create("demo.db", httpreadat.New("https://www.sanford.io/demo.db"))
+	readervfs.Create("demo.db", httpreadat.New("https://sanford.io/demo.db"))
 	defer readervfs.Delete("demo.db")
 
 	db, err := sql.Open("sqlite3", "file:demo.db?vfs=reader")
@@ -34,8 +34,8 @@ func Example_http() {
 	}
 	rows, err := db.Query(`
 		SELECT period, data_value, magntude, units FROM csv
-			WHERE period > '2010'
-			LIMIT 10`)
+		WHERE period > '2010'
+		LIMIT 10`)
 	if err != nil {
 		log.Fatal(err)
 	}

vfs/readervfs/reader.go

@@ -7,7 +7,6 @@ import (
 
 type readerVFS struct{}
 
-// Open implements the [vfs.VFS] interface.
 func (readerVFS) Open(name string, flags vfs.OpenFlag) (vfs.File, vfs.OpenFlag, error) {
 	if flags&vfs.OPEN_MAIN_DB == 0 {
 		return nil, flags, sqlite3.CANTOPEN
@@ -20,17 +19,14 @@ func (readerVFS) Open(name string, flags vfs.OpenFlag) (vfs.File, vfs.OpenFlag,
 	return nil, flags, sqlite3.CANTOPEN
 }
 
-// Delete implements the [vfs.VFS] interface.
 func (readerVFS) Delete(name string, dirSync bool) error {
 	return sqlite3.IOERR_DELETE
 }
 
-// Access implements the [vfs.VFS] interface.
 func (readerVFS) Access(name string, flag vfs.AccessFlag) (bool, error) {
 	return false, nil
 }
 
-// FullPathname implements the [vfs.VFS] interface.
 func (readerVFS) FullPathname(name string) (string, error) {
 	return name, nil
 }

vfs/registry.go

@@ -12,7 +12,7 @@ var (
 // If there is no match, nil is returned.
 // If name is empty, the default VFS is returned.
 //
-// https://www.sqlite.org/c3ref/vfs_find.html
+// https://sqlite.org/c3ref/vfs_find.html
 func Find(name string) VFS {
 	if name == "" || name == "os" {
 		return vfsOS{}
@@ -24,7 +24,7 @@ func Find(name string) VFS {
 
 // Register registers a VFS.
 //
-// https://www.sqlite.org/c3ref/vfs_find.html
+// https://sqlite.org/c3ref/vfs_find.html
 func Register(name string, vfs VFS) {
 	if name == "" || name == "os" {
 		return
@@ -39,7 +39,7 @@ func Register(name string, vfs VFS) {
 
 // Unregister unregisters a VFS.
 //
-// https://www.sqlite.org/c3ref/vfs_find.html
+// https://sqlite.org/c3ref/vfs_find.html
 func Unregister(name string) {
 	vfsRegistryMtx.Lock()
 	defer vfsRegistryMtx.Unlock()

vfs/tests/mptest/mptest_test.go

@@ -102,7 +102,7 @@ func Test_config01(t *testing.T) {
 	cfg := config(ctx).WithArgs("mptest", name, "config01.test")
 	mod, err := rt.InstantiateModule(ctx, module, cfg)
 	if err != nil {
-		t.Error(err)
+		t.Fatal(err)
 	}
 	mod.Close(ctx)
 }
@@ -120,7 +120,7 @@ func Test_config02(t *testing.T) {
 	cfg := config(ctx).WithArgs("mptest", name, "config02.test")
 	mod, err := rt.InstantiateModule(ctx, module, cfg)
 	if err != nil {
-		t.Error(err)
+		t.Fatal(err)
 	}
 	mod.Close(ctx)
 }
@@ -135,7 +135,7 @@ func Test_crash01(t *testing.T) {
 	cfg := config(ctx).WithArgs("mptest", name, "crash01.test")
 	mod, err := rt.InstantiateModule(ctx, module, cfg)
 	if err != nil {
-		t.Error(err)
+		t.Fatal(err)
 	}
 	mod.Close(ctx)
 }
@@ -150,7 +150,7 @@ func Test_multiwrite01(t *testing.T) {
 	cfg := config(ctx).WithArgs("mptest", name, "multiwrite01.test")
 	mod, err := rt.InstantiateModule(ctx, module, cfg)
 	if err != nil {
-		t.Error(err)
+		t.Fatal(err)
 	}
 	mod.Close(ctx)
 }
@@ -163,7 +163,7 @@ func Test_config01_memory(t *testing.T) {
 		"--timeout", "1000")
 	mod, err := rt.InstantiateModule(ctx, module, cfg)
 	if err != nil {
-		t.Error(err)
+		t.Fatal(err)
 	}
 	mod.Close(ctx)
 }
@@ -180,7 +180,7 @@ func Test_multiwrite01_memory(t *testing.T) {
 		"--timeout", "1000")
 	mod, err := rt.InstantiateModule(ctx, module, cfg)
 	if err != nil {
-		t.Error(err)
+		t.Fatal(err)
 	}
 	mod.Close(ctx)
 }

vfs/tests/mptest/testdata/build.sh

@@ -23,7 +23,7 @@ WASI_SDK="$ROOT/tools/wasi-sdk-20.0/bin"
 	-DSQLITE_THREADSAFE=0 -DSQLITE_OMIT_LOAD_EXTENSION \
 	-D_WASI_EMULATED_GETPID -lwasi-emulated-getpid
 
-"$BINARYEN/wasm-opt" -g --strip -c -O3 \
+"$BINARYEN/wasm-opt" -g --strip --strip-producers -c -O3 \
 	mptest.wasm -o mptest.tmp \
 	--enable-simd --enable-mutable-globals --enable-multivalue \
 	--enable-bulk-memory --enable-reference-types \