Driver savepoints.

driver/driver.go

@@ -269,6 +269,12 @@ func (c *conn) ExecContext(ctx context.Context, query string, args []driver.Name
 		return nil, driver.ErrSkip
 	}
 
+	if savept, ok := ctx.(*saveptCtx); ok {
+		// Called from driver.Savepoint.
+		savept.Savepoint = c.Savepoint()
+		return resultRowsAffected(-1), nil
+	}
+
 	old := c.Conn.SetInterrupt(ctx)
 	defer c.Conn.SetInterrupt(old)
 

driver/savepoint.go

@@ -0,0 +1,27 @@
+package driver
+
+import (
+	"database/sql"
+	"time"
+
+	"github.com/ncruces/go-sqlite3"
+)
+
+// Savepoint establishes a new transaction savepoint.
+//
+// https://www.sqlite.org/lang_savepoint.html
+func Savepoint(tx *sql.Tx) sqlite3.Savepoint {
+	var ctx saveptCtx
+	tx.ExecContext(&ctx, "")
+	return ctx.Savepoint
+}
+
+type saveptCtx struct{ sqlite3.Savepoint }
+
+func (*saveptCtx) Deadline() (deadline time.Time, ok bool) { return }
+
+func (*saveptCtx) Done() <-chan struct{} { return nil }
+
+func (*saveptCtx) Err() error { return nil }
+
+func (*saveptCtx) Value(key any) any { return nil }