Fixed

• Improve the check if a connection is still working in our connection pool implementation by actually loading the response
• Improve mapping of SQL error states to diesel database error kinds for PostgreSQL 18 and newer

New Contributors

• @ajesipow made their first contribution in #293
• @DhineshKrishnan1206 made their first contribution in #294

Full Changelog: v0.9.1...v0.9.2

You can support the development of Diesel by:

• Contributing Code, Documentation or Guides. Checkout the planing for Diesel 2.4 for open tasks.
• Providing knowledge and help to maintain the MySQL/MariaDB backend. This is currently the only in-tree backend that is not used by any maintainers, so having someone around that actually uses this backend would be very helpful for the Diesel project.
• Answering questions in our discussion forum
• Reporting bugs in our issue tracker
• Helping triaging issues in our issue tracker
• Sponsoring the maintainers.

• Improve the check if a connection is still working in our connection pool implementation by actually loading the response
• Improve mapping of SQL error states to diesel database error kinds for PostgreSQL 18 and newer

Fixed

• Correctly check if a connection is a broken state (e.g. has an open transaction) for the mobc pool implementation

Full Changelog: v0.9.1...v0.9.1

You can support the development of Diesel by:

• Contributing Code, Documentation or Guides. Checkout the planing for Diesel 2.4 for open tasks.
• Providing knowledge and help to maintain the MySQL/MariaDB backend. This is currently the only in-tree backend that is not used by any maintainers, so having someone around that actually uses this backend would be very helpful for the Diesel project.
• Answering questions in our discussion forum
• Reporting bugs in our issue tracker
• Helping triaging issues in our issue tracker
• Sponsoring the maintainers.

• Correctly check if a connection is a broken state (e.g. has an open transaction) for the mobc pool implementation

Changes

• Change all transaction related functions to accept an real async closure instead of
  the scoped boxed variant. This change requires adujsting all call sides of transaction
  based functions from conn.transaction(|conn| async move {/* your code */}.scoped_boxed())
  to conn.transaction(async |conn| /* your code */)

Fixed

• Fixed an unsound access to padding values while deserializing Date/Time values in the mysql backend
  Thanks to @paolobarbolini for finding this issue.

You can support the development of Diesel by:

• Contributing Code, Documentation or Guides. Checkout the planing for Diesel 2.4 for open tasks.
• Providing knowledge and help to maintain the MySQL/MariaDB backend. This is currently the only in-tree backend that is not used by any maintainers, so having someone around that actually uses this backend would be very helpful for the Diesel project.
• Answering questions in our discussion forum
• Reporting bugs in our issue tracker
• Helping triaging issues in our issue tracker
• Sponsoring the maintainers.

Full Changelog: v0.8.0...v0.9.0

• Change all transaction related functions to accept an real async closure instead of the scoped boxed variant. This change requires adujsting all call sides of transaction based functions from conn.transaction(|conn| async move {/* your code */}.scoped_boxed()) to conn.transaction(async |conn| /* your code */)
• Fixed an unsound access to padding values while deserializing Date/Time values in the mysql backend Thanks to Paolo Barbolini for finding this issue.

What's Changed

• Added support for UpdateAndFetchResults for SyncConnectionWrapper, allowing to use save_changes
• Bumped supported deadpool version to 0.13
• Fixed a bug with postgres query pipelining that can cause panics
• Fixed a bug with the SyncConnectionWrapper that can cause panics if the future is dropped before completion

You can support the development of Diesel by:

• Contributing Code, Documentation or Guides. Checkout the planing for Diesel 2.4 for open tasks.
• Providing knowledge and help to maintain the MySQL/MariaDB backend. This is currently the only in-tree backend that is not used by any maintainers, so having someone around that actually uses this backend would be very helpful for the Diesel project.
• Answering questions in our discussion forum
• Reporting bugs in our issue tracker
• Helping triaging issues in our issue tracker
• Sponsoring the maintainers.

New Contributors

• @epompeii made their first contribution in #272
• @Hao2203 made their first contribution in #273
• @766974616c79 made their first contribution in #275
• @TheNeikos made their first contribution in #279
• @dav-wolff made their first contribution in #283

Full Changelog: v0.7.4...v0.8.0

• Added support for UpdateAndFetchResults for SyncConnectionWrapper, allowing to use save_changes
• Bumped supported deadpool version to 0.13
• Fixed a bug with postgres query pipelining that can cause panics
• Fixed a bug with the SyncConnectionWrapper that can cause panics if the future is dropped before completion

What's Changed

• Keep track of mysql statements to close by @weiznich in #271

Full Changelog: v0.7.3...v0.7.4

You can support the development of Diesel by:

• Contributing Code, Documentation or Guides. Checkout the planing for Diesel 2.4 for open tasks.
• Providing knowledge and help to maintain the MySQL/MariaDB backend. This is currently the only in-tree backend that is not used by any maintainers, so having someone around that actually uses this backend would be very helpful for the Diesel project.
• Answering questions in our discussion forum
• Reporting bugs in our issue tracker
• Helping triaging issues in our issue tracker
• Sponsoring the maintainers.

• Fixed an issue with dropping uncached mysql statements

• Another attempt to fix the docs.rs build by @paolobarbolini

Full Changelog: v0.7.2...v0.7.3

• Another docs.rs build fix

• Fix versions shown in the readme

Full Changelog: v0.7.1...v0.7.2

• Fix versions in the Readme

• Fix the docs.rs build

• Fix the docs.rs build

New features

• Support for diesel 2.3
• Added support for running migrations via AsyncMigrationHarness
• Improved ergonomics of using query pipelining with AsyncPgConnection
• Added the ability to cancel queries using AsyncMysqlConnection::cancel_token

I would like to sincerely thank all my generous sponsors who have contributed to make this release possible.

Nevertheless is the Diesel project always looking for support. You can help by:

• Contributing Code, Documentation or Guides. Checkout the planing for Diesel 2.4 for open tasks.
• Providing knowledge and help to maintain the MySQL/MariaDB backend. This is currently the only in-tree backend that is not used by any maintainers, so having someone around that actually uses this backend would be very helpful for the Diesel(-async) project.
• Answering questions in our discussion forum
• Reporting bugs in our issue tracker
• Helping triaging issues in our issue tracker
• Sponsoring the maintainers.

Full Changelog: v0.6.0...v0.7.0

• Support for diesel 2.3
• Added support for running migrations via AsyncMigrationHarness
• Improved ergonomics of using query pipelining with AsyncPgConnection
• Added the ability to cancel queries using AsyncMysqlConnection::cancel_token

What's Changed

• Fix building with different feature combinations

You can support the development of diesel-async by contributions or by sponsoring the project on GitHub.

Full Changelog: v0.6.0...v0.6.1

• Fix features for some dependencies

• Allow to control the statement cache size
• Minimize dependencies features
• Bump minimal supported mysql_async version to 0.36.0
• Fixing a bug in how we tracked open transaction that could lead to dangling transactions is specific cases

• Fixed an issue around transaction cancellation that could lead to connection pools containing connections with dangling transactions

• Add crate feature pool for extending connection pool implements through external crate
• Implement Deref and DerefMut for AsyncConnectionWrapper to allow using it in an async context as well

• Added type diesel_async::pooled_connection::mobc::PooledConnection
• MySQL/MariaDB now use CLIENT_FOUND_ROWS capability to allow consistent behaviour with PostgreSQL regarding return value of UPDATe commands.
• The minimal supported rust version is now 1.78.0
• Add a SyncConnectionWrapper type that turns a sync connection into an async one. This enables SQLite support for diesel-async
• Add support for diesel::connection::Instrumentation to support logging and other instrumentation for any of the provided connection impls.
• Bump minimal supported mysql_async version to 0.34

• Fixed feature flags for docs.rs

• Add a AsyncConnectionWrapper type to turn a diesel_async::AsyncConnection into a diesel::Connection. This might be used to execute migrations via diesel_migrations.
• Add some connection pool configurations to specify how connections in the pool should be checked if they are still valid

• Fix TinyInt serialization
• Check for open transactions before returning the connection to the pool

• Minor readme fixes
• Add a missing UpdateAndFetchResults impl

• Compatibility with diesel 2.1

• Dependency updates for mysql-async to allow newer versions

• Dependency updates for mobc and mysql-async to allow newer versions as well
• Extend the README
• Improve the version constraint for diesel so that we do not end up using a newer diesel version that's incompatible

• #38 Relax the requirements for borrowed captures in the transaction closure
• #41 Remove GAT workarounds from various traits (Raises the MSRV to 1.65)
• #42 Add an additional AsyncDieselConnectionManager constructor that allows to specify a custom connection setup method to allow setting up postgres TLS connections
• Relicense the crate under the MIT or Apache 2.0 License

Fixes

• Fix prepared statement leak for the mysql backend implementation

• Initial release