Sourced from github.com/stephenafamo/bob's releases.

v0.43.0

Added

• Added PostgreSQL MERGE statement support with full syntax including:
  • MERGE INTO ... USING ... ON ... with table aliases and ONLY modifier
  • WHEN MATCHED, WHEN NOT MATCHED, WHEN NOT MATCHED BY SOURCE clauses
  • UPDATE, INSERT, DELETE, DO NOTHING actions
  • Support for AND condition in WHEN clauses
  • OVERRIDING SYSTEM VALUE and OVERRIDING USER VALUE for INSERT actions
  • RETURNING clause support (PostgreSQL 17+) (thanks @​atzedus)
  • Note: the SQL parser used for sql-to-code generation does not yet support MERGE statements
• Added psql.SetVersion, psql.GetVersion, and psql.VersionAtLeast functions for context-based PostgreSQL version management (thanks @​atzedus)
• Added Table.Merge() method for ORM-style MERGE operations with automatic RETURNING * for PostgreSQL 17+ (thanks @​atzedus)
• Added mm package with modifiers for building MERGE queries (mm.Into, mm.Using, mm.WhenMatched, mm.WhenNotMatched, mm.WhenNotMatchedBySource, etc.) (thanks @​atzedus)
• Added enum_format configuration option to control enum value identifier formatting. Options: "title_case" (default, e.g., InProgress) or "screaming_snake_case" (e.g., IN_PROGRESS).
• Added Unqualified() method to generated column structures that returns columns without table alias/prefix. (thanks @​atzedus)
• Added PreloadCount and ThenLoadCount to generate code for preloading and then loading counts for relationships. (thanks @​jacobmolby)
• MySQL support for insert queries executing loaders (e.g., InsertThenLoad, InsertThenLoadCount). (thanks @​jacobmolby)
• Added overwritable hooks that are run before the exec or scanning test of generated queries. This allows seeding data before the test runs.
• Added bob.Each function to iterate over query results (range-over-func). (thanks @​toqueteos)
• Added support for the VALUES statement in MySQL, PostgreSQL, and SQLite. (thanks @​manhrev)
• Added MariaDB compatibility check in gen/bobgen-mysql (thanks @​dumdev25)
• Added ALL, SOME, ANY expressions for MySQL and PostgreSQL dialects. Added EXISTS expression for all dialects. (thanks @​manhrev)
• Added a customizable MySQL and PostgreSQL driver image setting for bobgen-sql. (thanks @​manhrev)

Fixed

• Fix pgx driver Commit() returning nil instead of pgx.ErrTxClosed when the transaction is already closed (e.g., rolled back by context expiry). This prevented silent data loss by correctly propagating the error to the caller. (thanks @​wucm667)
• Fix self-referencing relationship back-references so generated preload/load helpers no longer create cyclic parent links. (thanks @​atzedus)
• Fix collisions for preloader alias generation. Replaced RandInt with NextUniqueInt (thanks @​atzedus)
• Fix an issue where the random function of aliased custom types were not being used in generated query tests.
• Properly recognize placeholders in LIMIT and OFFSET when generating queries for PostgreSQL.
• Throw an error on an empty SET clause during SQL generation rather than sending invalid syntax to database. (thanks @​Xaeroxe)
• Fix MySQL Insert().One()/All()/Cursor() using SELECT * instead of explicit model columns when re-fetching inserted rows, consistent with PostgreSQL/SQLite RETURNING. (thanks @​tak848)

New Contributors

• @​olafal0 made their first contribution in stephenafamo/bob#596
• @​toqueteos made their first contribution in stephenafamo/bob#607
• @​dumdev25 made their first contribution in stephenafamo/bob#614
• @​manhrev made their first contribution in stephenafamo/bob#613
• @​Xaeroxe made their first contribution in stephenafamo/bob#615
• @​aronsx made their first contribution in stephenafamo/bob#630
• @​fisayoafolayan made their first contribution in stephenafamo/bob#644
• @​Ocyss made their first contribution in stephenafamo/bob#646
• @​wucm667 made their first contribution in stephenafamo/bob#661

Full Changelog: stephenafamo/bob@v0.42.0...v0.43.0

Sourced from github.com/stephenafamo/bob's changelog.

[v0.43.0] - 2026-04-29

Added

• Added PostgreSQL MERGE statement support with full syntax including:
  • MERGE INTO ... USING ... ON ... with table aliases and ONLY modifier
  • WHEN MATCHED, WHEN NOT MATCHED, WHEN NOT MATCHED BY SOURCE clauses
  • UPDATE, INSERT, DELETE, DO NOTHING actions
  • Support for AND condition in WHEN clauses
  • OVERRIDING SYSTEM VALUE and OVERRIDING USER VALUE for INSERT actions
  • RETURNING clause support (PostgreSQL 17+) (thanks @​atzedus)
  • Note: the SQL parser used for sql-to-code generation does not yet support MERGE statements
• Added psql.SetVersion, psql.GetVersion, and psql.VersionAtLeast functions for context-based PostgreSQL version management (thanks @​atzedus)
• Added Table.Merge() method for ORM-style MERGE operations with automatic RETURNING * for PostgreSQL 17+ (thanks @​atzedus)
• Added mm package with modifiers for building MERGE queries (mm.Into, mm.Using, mm.WhenMatched, mm.WhenNotMatched, mm.WhenNotMatchedBySource, etc.) (thanks @​atzedus)
• Added enum_format configuration option to control enum value identifier formatting. Options: "title_case" (default, e.g., InProgress) or "screaming_snake_case" (e.g., IN_PROGRESS).
• Added Unqualified() method to generated column structures that returns columns without table alias/prefix. (thanks @​atzedus)
• Added PreloadCount and ThenLoadCount to generate code for preloading and then loading counts for relationships. (thanks @​jacobmolby)
• MySQL support for insert queries executing loaders (e.g., InsertThenLoad, InsertThenLoadCount). (thanks @​jacobmolby)
• Added overwritable hooks that are run before the exec or scanning test of generated queries. This allows seeding data before the test runs.
• Added bob.Each function to iterate over query results (range-over-func). (thanks @​toqueteos)
• Added support for the VALUES statement in MySQL, PostgreSQL, and SQLite. (thanks @​manhrev)
• Added MariaDB compatibility check in gen/bobgen-mysql (thanks @​dumdev25)
• Added ALL, SOME, ANY expressions for MySQL and PostgreSQL dialects. Added EXISTS expression for all dialects. (thanks @​manhrev)
• Added a customizable MySQL and PostgreSQL driver image setting for bobgen-sql. (thanks @​manhrev)

Fixed

• Fix pgx driver Commit() returning nil instead of pgx.ErrTxClosed when the transaction is already closed (e.g., rolled back by context expiry). This prevented silent data loss by correctly propagating the error to the caller. (thanks @​wucm667)
• Fix self-referencing relationship back-references so generated preload/load helpers no longer create cyclic parent links. (thanks @​atzedus)
• Fix collisions for preloader alias generation. Replaced RandInt with NextUniqueInt (thanks @​atzedus)
• Fix an issue where the random function of aliased custom types were not being used in generated query tests.
• Properly recognize placeholders in LIMIT and OFFSET when generating queries for PostgreSQL.
• Throw an error on an empty SET clause during SQL generation rather than sending invalid syntax to database. (thanks @​Xaeroxe)
• Fix MySQL Insert().One()/All()/Cursor() using SELECT * instead of explicit model columns when re-fetching inserted rows, consistent with PostgreSQL/SQLite RETURNING. (thanks @​tak848)

• bd793b0 Update CHANGELOG.md for v0.43.0
• cd5e547 Merge pull request #661 from wucm667/fix/pgx-tx-commit-error
• eaaea91 fix(pgx): return ErrTxClosed from Commit instead of swallowing it
• febd197 Merge pull request #660 from atzedus/refactor/merge-when-chain-api
• e822e6e refactor(psql/mm): replace WHEN clause mods with fluent chain API
• f7bbde2 Merge pull request #623 from atzedus/merge-psql-operation
• 90236b9 docs(changelog): note missing MERGE support in sql-to-code parser
• 2305e36 Merge branch 'main' into merge-psql-operation
• 049ae7a Merge pull request #659 from atzedus/bugfix-658
• d8410bc docs(changelog): add entry for self-referencing back-reference fix
• Additional commits viewable in compare view

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)