# Changelog

 - 2026-04-06 v1.48.2:
     - Fix ABI mapping mismatch in the pre-update hook trampoline that caused silent truncation of large 64-bit RowIDs.
     - Ensure the Go trampoline signature correctly aligns with the public `sqlite3_preupdate_hook` C API, preventing data corruption for high-entropy keys (e.g., Snowflake IDs).
     - See [GitLab merge request #98](https://gitlab.com/cznic/sqlite/-/merge_requests/98), thanks Josh Bleecher Snyder!
     - Fix the memory allocator used in `(*conn).Deserialize`.
     - Replace `tls.Alloc` with `sqlite3_malloc64` to prevent internal allocator corruption. This ensures the buffer is safely owned by SQLite, which may resize or free it due to the `SQLITE_DESERIALIZE_RESIZEABLE` and `SQLITE_DESERIALIZE_FREEONCLOSE` flags.
     - Prevent a memory leak by properly freeing the allocated buffer if fetching the main database name fails before handing ownership to SQLite.
     - See [GitLab merge request #100](https://gitlab.com/cznic/sqlite/-/merge_requests/100), thanks Josh Bleecher Snyder!
     - Fix `(*conn).Deserialize` to explicitly reject `nil` or empty byte slices.
     - Prevent silent database disconnection and connection pool corruption caused by SQLite's default behavior when `sqlite3_deserialize` receives a 0-length buffer.
     - See [GitLab merge request #101](https://gitlab.com/cznic/sqlite/-/merge_requests/101), thanks Josh Bleecher Snyder!
     - Fix `commitHookTrampoline` and `rollbackHookTrampoline` signatures by removing the unused `pCsr` parameter.
     - Aligns internal hook callbacks accurately with the underlying SQLite C API, cleaning up the code to prevent potential future confusion or bugs.
     - See [GitLab merge request #102](https://gitlab.com/cznic/sqlite/-/merge_requests/102), thanks Josh Bleecher Snyder!
     - Fix `checkptr` instrumentation failures during `go test -race` when registering and using virtual tables (`vtab`).
     - Allocate `sqlite3_module` instances using the C allocator (`libc.Xcalloc`) instead of the Go heap. This ensures transpiled C code can safely perform pointer operations on the struct without tripping Go's pointer checks.
     - See [GitLab merge request #103](https://gitlab.com/cznic/sqlite/-/merge_requests/103), thanks Josh Bleecher Snyder!
     - Fix data race on `mutex.id` in the `mutexTry` non-recursive path.
     - Ensure consistent atomic writes (`atomic.StoreInt32`) to prevent data races with atomic loads in `mutexHeld` and `mutexNotheld` during concurrent execution.
     - See [GitLab merge request #104](https://gitlab.com/cznic/sqlite/-/merge_requests/104), thanks Josh Bleecher Snyder!
     - Fix resource leak in `(*Backup).Commit` where the destination connection was not closed on error.
     - Ensure `dstConn` is properly closed when `sqlite3_backup_finish` fails, preventing file descriptor, TLS, and memory leaks.
     - See [GitLab merge request #105](https://gitlab.com/cznic/sqlite/-/merge_requests/105), thanks Josh Bleecher Snyder!
     - Fix `Exec` to fully drain rows when encountering `SQLITE_ROW`, preventing silent data loss in DML statements.
     - Previously, `Exec` aborted after the first row, meaning `INSERT`, `UPDATE`, or `DELETE` statements with a `RETURNING` clause would fail to process subsequent rows. The execution path now correctly loops until `SQLITE_DONE` and properly respects context cancellations during the drain loop, fully aligning with native C `sqlite3_exec` semantics.
     - See [GitLab merge request #106](https://gitlab.com/cznic/sqlite/-/merge_requests/106), thanks Josh Bleecher Snyder!
     - Fix "Shadowed err value (stmt.go)".
     - See [GitLab issue #249](https://gitlab.com/cznic/sqlite/-/work_items/249), thanks Emrecan BATI!
     - Fix silent omission of virtual table savepoint callbacks by correctly setting the sqlite3_module version.
     - See [GitLab merge request #107](https://gitlab.com/cznic/sqlite/-/merge_requests/107), thanks Josh Bleecher Snyder!
     - Fix `vfsRead` to properly handle partial and fragmented reads from `io.Reader`.
     - Replace `f.Read` with `io.ReadFull` to ensure the buffer is fully populated, preventing premature `SQLITE_IOERR_SHORT_READ` errors on valid mid-stream partial reads. Unread tail bytes at EOF are now efficiently zero-filled using the built-in `clear` function.
     - See [GitLab merge request #108](https://gitlab.com/cznic/sqlite/-/merge_requests/108), thanks Josh Bleecher Snyder!
     - Refactor internal error formatting to safely handle uninitialized or closed database pointers.
     - Prevent a misleading "out of memory" error message when an operation fails and the underlying SQLite database handle is `NULL` (`db == 0`).
     - See [GitLab merge request #109](https://gitlab.com/cznic/sqlite/-/merge_requests/109), thanks Josh Bleecher Snyder!
     - Fix error handling in database backup and restore initialization (`sqlite3_backup_init`).
     - Ensure error codes and messages are accurately read from the destination database handle rather than hardcoding the source or remote handle. This prevents swallowed errors or mismatched "not an error" messages when a backup or restore operation fails to start.
     - See [GitLab merge request #111](https://gitlab.com/cznic/sqlite/-/merge_requests/111), thanks Josh Bleecher Snyder!
     - Fix database handle and C-heap memory leaks when `sqlite3_open_v2` fails.
     - Ensure `sqlite3_close_v2` is called on the partially allocated database handle during a failed open, and explicitly close `libc.TLS` in `newConn` to prevent resource leakage.
     - Prevent misleading "out of memory" error messages on failed connections by correctly extracting the exact error string from the allocated handle before it is closed.
     - See [GitLab merge request #112](https://gitlab.com/cznic/sqlite/-/merge_requests/112), thanks Josh Bleecher Snyder!

 - 2026-04-03 v1.48.1:
     - Fix memory leaks and double-free vulnerabilities in the multi-statement query execution path.
     - Ensure bind-parameter allocations are reliably freed via strict ownership transfer if an error occurs mid-loop or if multiple statements bind parameters.
     - Fix a resource leak where a subsequent statement's error could orphan a previously generated `rows` object without closing it, leaking the prepared statement handle.
     - See [GitLab merge request #96](https://gitlab.com/cznic/sqlite/-/merge_requests/96), thanks Josh Bleecher Snyder!

 - 2026-03-27 v1.48.0:
     - Add `_timezone` DSN query parameter to apply IANA timezones (e.g., "America/New_York") to both reads and writes.
     - Writes will convert `time.Time` values to the target timezone before formatting as a string.
     - Reads will interpret timezone-less strings as being in the target timezone.
     - Does not impact `_inttotime` integer values, which will always safely evaluate as UTC.
     - Add support for `_time_format=datetime` URI parameter to format `time.Time` values identically to SQLite's native `datetime()` function and `CURRENT_TIMESTAMP` (`YYYY-MM-DD HH:MM:SS`).
     - See [GitLab merge request #94](https://gitlab.com/cznic/sqlite/-/merge_requests/94) and [GitLab merge request #95](https://gitlab.com/cznic/sqlite/-/merge_requests/95), thanks Josh Bleecher Snyder!

 - 2026-03-17 v1.47.0: Add CGO-free version of the vector extensions from https://github.com/asg017/sqlite-vec. See `vec_test.go` for example usage. From the GitHub project page:
     - **Important:** sqlite-vec is a pre-v1, so expect breaking changes!
     - Store and query float, int8, and binary vectors in vec0 virtual tables
     - Written in pure C, no dependencies, runs anywhere SQLite runs (Linux/MacOS/Windows, in the browser with WASM, Raspberry Pis, etc.)
     - Store non-vector data in metadata, auxiliary, or partition key columns
     - See [GitLab merge request #93](https://gitlab.com/cznic/sqlite/-/merge_requests/93), thanks Zhenghao Zhang!

 - 2026-03-16 v1.46.2: Upgrade to  [SQLite 3.51.3](https://sqlite.org/releaselog/3_51_3.html).

 - 2026-02-17 v1.46.1:
     - Ensure connection state is reset if Tx.Commit fails. Previously, errors like SQLITE_BUSY during COMMIT could leave the underlying connection inside a transaction, causing errors when the connection was reused by the database/sql pool. The driver now detects this state and forces a rollback internally.
     - Fixes [GitHub issue #2](https://github.com/modernc-org/sqlite/issues/2), thanks Edoardo Spadolini!

 - 2026-02-17 v1.46.0:
     - Enable ColumnTypeScanType to report time.Time instead of string for TEXT columns declared as DATE, DATETIME, TIME, or TIMESTAMP via a new `_texttotime` URI parameter.
     - See [GitHub pull request #1](https://github.com/modernc-org/sqlite/pull/1), thanks devhaozi!

 - 2026-02-09  v1.45.0:
     - Introduce vtab subpackage (modernc.org/sqlite/vtab) exposing Module, Table, Cursor, and IndexInfo API for Go virtual tables.
     - Wire vtab registration into the driver: vtab.RegisterModule installs modules globally and each new connection calls sqlite3_create_module_v2.
     - Implement vtab trampolines for xCreate/xConnect/xBestIndex/xDisconnect/xDestroy/xOpen/xClose/xFilter/xNext/xEof/xColumn/xRowid.
     - Map SQLite’s sqlite3_index_info into vtab.IndexInfo, including constraints, ORDER BY terms, and constraint usage (ArgIndex → xFilter argv[]).
     - Add an in‑repo dummy vtab module and test (module_test.go) that validates registration, basic scanning, and constraint visibility.
     - See [GitLab merge request #90](https://gitlab.com/cznic/sqlite/-/merge_requests/90), thanks Adrian Witas!

 - 2026-01-19 v1.44.3: Resolves [GitLab issue #243](https://gitlab.com/cznic/sqlite/-/issues/243).

 - 2026-01-18 v1.44.2: Upgrade to  [SQLite 3.51.2](https://sqlite.org/releaselog/3_51_2.html).

 - 2026-01-13 v1.44.0: Upgrade to SQLite 3.51.1.

 - 2025-10-10 v1.39.1: Upgrade to SQLite 3.50.4.

 - 2025-06-09 v1.38.0: Upgrade to SQLite 3.50.1.

 - 2025-02-26 v1.36.0: Upgrade to SQLite 3.49.0.

 - 2024-11-16 v1.34.0: Implement ResetSession and IsValid methods in connection

 - 2024-07-22 v1.31.0: Support windows/386.

 - 2024-06-04 v1.30.0: Upgrade to SQLite 3.46.0, release notes at
   https://sqlite.org/releaselog/3_46_0.html.

 - 2024-02-13 v1.29.0: Upgrade to SQLite 3.45.1, release notes at
   https://sqlite.org/releaselog/3_45_1.html.

 - 2023-12-14: v1.28.0: Add (*Driver).RegisterConnectionHook,
   ConnectionHookFn, ExecQuerierContext, RegisterConnectionHook.

 - 2023-08-03 v1.25.0: enable SQLITE_ENABLE_DBSTAT_VTAB.

 - 2023-07-11 v1.24.0: Add
   (*conn).{Serialize,Deserialize,NewBackup,NewRestore} methods, add Backup
   type.

 - 2023-06-01 v1.23.0: Allow registering aggregate functions.

 - 2023-04-22 v1.22.0: Support linux/s390x.

 - 2023-02-23 v1.21.0: Upgrade to SQLite 3.41.0, release notes at
   https://sqlite.org/releaselog/3_41_0.html.

 - 2022-11-28 v1.20.0: Support linux/ppc64le.

 - 2022-09-16 v1.19.0: Support frebsd/arm64.

 - 2022-07-26 v1.18.0: Add support for Go fs.FS based SQLite virtual
   filesystems, see function New in modernc.org/sqlite/vfs and/or TestVFS in
   all_test.go

 - 2022-04-24 v1.17.0: Support windows/arm64.

 - 2022-04-04 v1.16.0: Support scalar application defined functions written
   in Go. See https://www.sqlite.org/appfunc.html

 - 2022-03-13 v1.15.0: Support linux/riscv64.

 - 2021-11-13 v1.14.0: Support windows/amd64. This target had previously
   only experimental status because of a now resolved memory leak.

 - 2021-09-07 v1.13.0: Support freebsd/amd64.

 - 2021-06-23 v1.11.0: Upgrade to use sqlite 3.36.0, release notes at
   https://www.sqlite.org/releaselog/3_36_0.html.

 - 2021-05-06 v1.10.6: Fixes a memory corruption issue
   (https://gitlab.com/cznic/sqlite/-/issues/53).  Versions since v1.8.6 were
   affected and should be updated to v1.10.6.

 - 2021-03-14 v1.10.0: Update to use sqlite 3.35.0, release notes at
   https://www.sqlite.org/releaselog/3_35_0.html.

 - 2021-03-11 v1.9.0: Support darwin/arm64.

 - 2021-01-08 v1.8.0: Support darwin/amd64.

 - 2020-09-13 v1.7.0: Support linux/arm and linux/arm64.

 - 2020-09-08 v1.6.0: Support linux/386.

 - 2020-09-03 v1.5.0: This project is now completely CGo-free, including
   the Tcl tests.

 - 2020-08-26 v1.4.0: First stable release for linux/amd64.  The
   database/sql driver and its tests are CGo free.  Tests of the translated
   sqlite3.c library still require CGo.

 - 2020-07-26 v1.4.0-beta1: The project has reached beta status while
   supporting linux/amd64 only at the moment. The 'extraquick' Tcl testsuite
   reports

 - 2019-12-28 v1.2.0-alpha.3: Third alpha fixes issue #19.

 - 2019-12-26 v1.1.0-alpha.2: Second alpha release adds support for
   accessing a database concurrently by multiple goroutines and/or processes.
   v1.1.0 is now considered feature-complete. Next planed release should be a
   beta with a proper test suite.

 - 2019-12-18 v1.1.0-alpha.1: First alpha release using the new cc/v3,
   gocc, qbe toolchain. Some primitive tests pass on linux_{amd64,386}. Not
   yet safe for concurrent access by multiple goroutines. Next alpha release
   is planed to arrive before the end of this year.

 - 2017-06-10: Windows/Intel no more uses the VM (thanks Steffen Butzer).

 - 2017-06-05 Linux/Intel no more uses the VM (cznic/virtual).
