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Ordered-set aggregate syntax.

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Nuno Cruces
2025-01-11 19:22:04 +00:00
parent aef7f051a8
commit aa4357a78f
6 changed files with 21 additions and 5 deletions
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10
embed/bcw2/README.md
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@@ -1,13 +1,19 @@
# Embeddable Wasm build of SQLite
This folder includes an embeddable Wasm build of SQLite, including the experimental
This folder includes an alternative embeddable Wasm build of SQLite,
which includes the experimental
[`BEGIN CONCURRENT`](https://sqlite.org/src/doc/begin-concurrent/doc/begin_concurrent.md) and
[Wal2](https://sqlite.org/cgi/src/doc/wal2/doc/wal2.md) patches.
It also enables the optional
[`UPDATE … ORDER BY … LIMIT`](https://sqlite.org/lang_update.html#optional_limit_and_order_by_clauses) and
[`DELETE … ORDER BY … LIMIT`](https://sqlite.org/lang_delete.html#optional_limit_and_order_by_clauses) clauses,
and the [`WITHIN GROUP ORDER BY`](https://sqlite.org/compile.html#enable_ordered_set_aggregates) aggregate syntax.
> [!IMPORTANT]
> This package is experimental.
> It is built from the `bedrock` branch of SQLite,
> since that is _currently_ the most stable, maintained branch to include both features.
> since that is _currently_ the most stable, maintained branch to include these features.
> [!CAUTION]
> The Wal2 journaling mode creates databases that other versions of SQLite cannot access.

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embed/bcw2/bcw2.wasm
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8
embed/bcw2/bcw2_test.go
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@@ -5,6 +5,7 @@ import (
"testing"
"github.com/ncruces/go-sqlite3/driver"
"github.com/ncruces/go-sqlite3/ext/stats"
"github.com/ncruces/go-sqlite3/vfs"
)
@@ -15,7 +16,7 @@ func Test_bcw2(t *testing.T) {
tmp := filepath.ToSlash(filepath.Join(t.TempDir(), "test.db"))
db, err := driver.Open("file:" + tmp + "?_pragma=journal_mode(wal2)&_txlock=concurrent")
db, err := driver.Open("file:"+tmp+"?_pragma=journal_mode(wal2)&_txlock=concurrent", stats.Register)
if err != nil {
t.Fatal(err)
}
@@ -37,6 +38,11 @@ func Test_bcw2(t *testing.T) {
t.Fatal(err)
}
_, err = tx.Exec(`SELECT median() WITHIN GROUP (ORDER BY col) FROM test`)
if err != nil {
t.Fatal(err)
}
err = tx.Commit()
if err != nil {
t.Fatal(err)

5
embed/bcw2/build.sh
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@@ -18,9 +18,10 @@ curl -# https://sqlite.org/src/tarball/sqlite.tar.gz?r=ec5d7025 | tar xz
cd sqlite
if [[ "$OSTYPE" == "msys" || "$OSTYPE" == "cygwin" ]]; then
MSYS_NO_PATHCONV=1 nmake /f makefile.msc sqlite3.c OPTS=-DSQLITE_ENABLE_UPDATE_DELETE_LIMIT
MSYS_NO_PATHCONV=1 nmake /f makefile.msc sqlite3.c "OPTS=-DSQLITE_ENABLE_UPDATE_DELETE_LIMIT -DSQLITE_ENABLE_ORDERED_SET_AGGREGATES"
else
sh configure --enable-update-limit && make sqlite3.c
sh configure --enable-update-limit
OPTS=-DSQLITE_ENABLE_ORDERED_SET_AGGREGATES make sqlite3.c
fi
cd ~-

1
embed/bcw2/go.mod
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@@ -8,6 +8,7 @@ require github.com/ncruces/go-sqlite3 v0.21.3
require (
github.com/ncruces/julianday v1.0.0 // indirect
github.com/ncruces/sort v0.1.2 // indirect
github.com/tetratelabs/wazero v1.8.2 // indirect
golang.org/x/sys v0.29.0 // indirect
)

2
embed/bcw2/go.sum
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@@ -2,6 +2,8 @@ github.com/ncruces/go-sqlite3 v0.21.3 h1:hHkfNQLcbnxPJZhC/RGw9SwP3bfkv/Y0xUHWsr1
github.com/ncruces/go-sqlite3 v0.21.3/go.mod h1:zxMOaSG5kFYVFK4xQa0pdwIszqxqJ0W0BxBgwdrNjuA=
github.com/ncruces/julianday v1.0.0 h1:fH0OKwa7NWvniGQtxdJRxAgkBMolni2BjDHaWTxqt7M=
github.com/ncruces/julianday v1.0.0/go.mod h1:Dusn2KvZrrovOMJuOt0TNXL6tB7U2E8kvza5fFc9G7g=
github.com/ncruces/sort v0.1.2 h1:zKQ9CA4fpHPF6xsUhRTfi5EEryspuBpe/QA4VWQOV1U=
github.com/ncruces/sort v0.1.2/go.mod h1:vEJUTBJtebIuCMmXD18GKo5GJGhsay+xZFOoBEIXFmE=
github.com/tetratelabs/wazero v1.8.2 h1:yIgLR/b2bN31bjxwXHD8a3d+BogigR952csSDdLYEv4=
github.com/tetratelabs/wazero v1.8.2/go.mod h1:yAI0XTsMBhREkM/YDAK/zNou3GoiAce1P6+rp/wQhjs=
golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=