5.4.1

CHANGES:

Added

• Added a child-process regression test covering the exec callback and
  concurrent statement preparation/finalization on a shared FULLMUTEX
  connection.

Changed

• Removed the clib:pthread OPAM tag, keeping only clib:sqlite3 as package
  classification metadata.
• Bumped ocamlformat to version 0.29.0.

Fixed

• Released the OCaml runtime lock around more explicit SQLite API calls that can
  contend on SQLite connection or statement mutexes, reducing the risk of
  deadlocks in multi-threaded code.

5.4.0

CHANGES:

Added

• column_is_null function in the low-level column API. Thanks to Alexander
  Keleshev for the contribution.
• Makefile support for generating compile_commands.json and improved
  generation for better LSP support in editors.

Changed

• Updated GitHub Actions actions/checkout from version 4 to version 6.
• Bumped ocamlformat version.
• Strengthened tests for column_is_null to cover both NULL and non-NULL
  values.

5.3.1

CHANGES:

• Made reference counting of database handles atomic for thread-safety. Thanks
  to Christoph Wintersteiger for the suggestion, and to o3-mini-high for
  finding a reference counting bug when handling exceptions.
• Fixed collation link freeing bug. Thanks to o3-mini-high for suggesting the
  fix without even being prompted (minus-shot).
• Removed obsolete compiler flags. OCaml already passes optimization flags, and
  flags for position-independent code should not be necessary. Thanks to Jonah
  Beckford for the contribution.

5.3.0

CHANGES:

Added

• Collation support. Thanks to Gusted.

Changed

• Builds now respect $PKG_CONFIG. Thanks to Antonio Nuno Monteiro.

5.2.0

CHANGES:

• Support MSVC compiler (Jonah Beckford)

• Add extended_errcode_int function (Petter A. Urkedal)

• Fix memory alloc in caml_sqlite3_backup_init()
  (Mark Elvers, Pierre Boutillier, and Benjamin Canou)

• Add Github CI (Yilin Wei)

• Detect pkgconf on Windows/mingw (Mark Elvers, reviewed by Shon Feder)

• Fixed shadowing of agg_ctx when using sizeof.

• Formatted sources using ocamlformat and clang-format.

• Fixed switch syntax error flagged by cppcheck.

• Added .editorconfig.

• Removed superfluous macro conditions.

• Improved API documentation formatting.

• Improved README, license file, copyright notices, and changelog format.

5.1.0

CHANGES:

• Added let&-operator for implicit closing of an opened database.

  Thanks to Yawar Amin yawar.amin@gmail.com for this contribution!

5.0.3

CHANGES:

• Fixed missing GC registration of init values in aggregate functions.

  • Fixed call to final aggregate function when no step function was called.

  • Fixed incorrect required minimum OCaml version (now 4.12).

5.0.2

CHANGES:

• Added missing dune-configurator dependency.

  • Removed redundant build dependencies.

  • Use caml_alloc_initialized_string wherever possible.

  • Fixed documentation typos and wording.

  • Added support for const char strings in stubs due to stricter handling
    in newer OCaml runtimes. This eliminates C-compiler warnings.

5.0.1

CHANGES:

• Added missing :with-test declaration in Dune project file.

  • Improved portability to older SQLite3 versions.

5.0.0

CHANGES:

• Breaking change:

  * `Data.to_string` is now `Data.to_string_coerce` to more clearly reflect
    that non-string data will be converted to strings.
  

  • Added support for SQLite3 window functions.

  • Added Sqlite3.Rc.check and Sqlite3.Rc.is_success for easier return
    code checking.

  • Added Sqlite3.prepare_or_reset for reusing prepared statements in loops.

  • Added Sqlite3.iter and Sqlite3.fold for more convenient handling of
    row data.

  • Added more data conversion functions, also for direct access to column data.

  • Added more data binding functions.

  • Improved closing behavior of database using new SQLite3 API.

  • Improved testing framework using ppx_inline_test.

  • Each test case now has its own database for parallel testing.

  • Switched from caml_alloc_custom to caml_alloc_custom_mem.

  • Switched to OPAM file generation via dune-project.

  • Improved compatibility with older OCaml versions. Thanks to Simon Cruanes
    for this patch!

  Thanks to Shawn shawnw.mobile@gmail.com and Ted Spence tspence@fb.com
  for their work on many of these contributions!