# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## [Unreleased]
## [0.28.0](https://github.com/pacman82/odbc-sys/compare/odbc-sys-v0.27.4...odbc-sys-v0.28.0) - 2025-11-30
### Added
- ConnectionAttribute is now a strict alias of `i32`. This has been done to support driver specific Connection Attributes. E.g. `SQL_COPT_SS_ACCESS_TOKEN` for Microsoft SQL Server. If you are migrating from the previous version of `odbc-sys` you will find that each variant of the former `ConnectionAttribute` enumeration has an equivalent constant. E.g. `ConnectionAttribute::PacketSize` is now `ConnectionAttribute::PACKET_SIZE`.
- unixODBC build script early exits on windows. This makes it easier to use the vendored unix-odbc feature, because we won't need a separate configuration for windows systems anymore. As on windows like platforms unixODBC will be an empty crate instead of one which does not build. On top of that it makes the Rust Analyzer work again for contributers to `odbc-sys` on windows platforms.
### Other
- Improve doc comment for `Numeric`
## [0.27.4](https://github.com/pacman82/odbc-sys/compare/odbc-sys-v0.27.3...odbc-sys-v0.27.4) - 2025-10-25
### Other
- updated the following local packages: unix-odbc
## [0.27.3](https://github.com/pacman82/odbc-sys/compare/odbc-sys-v0.27.2...odbc-sys-v0.27.3) - 2025-10-12
### Added
- unix-odbc crate, just does nothing than used with windows
- introduce compile time feature static_ltdl to allow for explicit
### Fixed
- [**breaking**] using the `static` feature flag no longer implies libltdl is
### Other
- Prevent recreating configure script for unixODBC during build
- formattig
- Remove superfluous unixODBC tar.gz
- build from unixODBC source included verbatum
- Vendor source for unixODBC verbatum
- update vendor script to include source verbatum
- remove the need for cargo:rerun-if-env-changed
- Re-fix #64
- formattig
- auto format on ci
- install unixodbc on empty features in macos and linux
- no unixodbc feature
- make the ci script both simpler and more exhaustive
- Fix issue with vendored unixODBC build not linking dynamically
- build vendored-unix-odbc on mac os
## [0.27.2](https://github.com/pacman82/odbc-sys/compare/odbc-sys-v0.27.1...odbc-sys-v0.27.2) - 2025-10-09
### Fixed
- An issue has been fixed which prevent the `vendored-unix-odbc` feature to build on Mac-OS
## [0.27.1](https://github.com/pacman82/odbc-sys/compare/odbc-sys-v0.27.0...odbc-sys-v0.27.1) - 2025-10-08
### Added
- Introduce vendored-unix-odbc flag. This enables building and linking against unixODBC as part of cargo build
## [0.27.0](https://github.com/pacman82/odbc-sys/compare/v0.26.3...v0.27.0) - 2025-09-08
### Fixed
- Remove `Send` from HStmt
## [0.26.3](https://github.com/pacman82/odbc-sys/compare/v0.26.2...v0.26.3) - 2025-09-05
### Added
- adds `HDesc::as_handle`
## [0.26.2](https://github.com/pacman82/odbc-sys/compare/v0.26.1...v0.26.2) - 2025-09-05
### Added
- adds HDesc::null()
## [0.26.1](https://github.com/pacman82/odbc-sys/compare/v0.26.0...v0.26.1) - 2025-09-05
### Added
- `HEnv`, `HDbc` and `HStmt` now have an `as_handle` method
## [0.26.0](https://github.com/pacman82/odbc-sys/compare/v0.25.1...v0.26.0) - 2025-09-05
### Added
- [**breaking**] Opaque types referenced by handles are no longer represented by empty enums. Instead handles are strict aliases of `c_void`.
- `HEnv`, `HDbc` and `HStmt` now implement Send.
## [0.25.1](https://github.com/pacman82/odbc-sys/compare/v0.25.0...v0.25.1) - 2025-08-16
### Other
- Install UnixODBC in test workflow
- Explain enum {} trick in handles
- extract handles into own module
## 0.25.0
### Added
- Automatically detect homebrew library path on Mac-OS
### Breaking
- Fix Typo `CDataType::TypeTimestampWithTimzone` is now `CDataType::TypeTimestampWithTimezone`
## 0.24.0
- New handle type `DBC_INFO_TOKEN`.
## 0.23.1
- Add `SQLSetPos`
## 0.23.0
- Add `InfoType::ActiveEnvironments`
- Fix Typo `InfoType::MaxDiverConnections` is now `InfoType::MaxDriverConnections`
Thanks to @lfrancke
## 0.22.0
- Extend `InfoType` to determine cursor capabilities. E.g. `InfoType::ScrollOptions`
## 0.21.4
- Add narrow `SQLForeignKeys`
## 0.21.3
- Add `SQLNumParams`
## 0.21.2
- Add `SQLColumns`. Previously only `SQLColumnsW` had been declared.
## 0.21.1
- Add `SQLColAttribute`. Previously only `SQLColAttributeW` had been declared.
## 0.21.0
- Add `SQLGetConnectAttr`. Previously only wide version had been declared.
- Removed `enum SqlAttributeStringLength` in favour of constants.
- Update edition to 2012
## 0.2## 0.0
- Add `StatementAttribute::MetadataId`
## 0.19.0
- Update to Rust edition 2018
## 0.18.4
- Check for overflow in `len_data_at_exec`.
## 0.18.3
- Improved documentation connection pooling.
## 0.18.2
- Add `SQLParamData`
## 0.18.1
- Add `DATA_AT_EXEC`
- Add `fn len_data_at_exec`
## 0.18.0
- Type of `NTS` and `NTSL` is now `isize`.
## 0.17.2
- Introduce `iodbc` feature for linking against iodbc on OS-X.
## 0.17.1
- Fix: `SqlReturn::INVALID_HANDLE` is now correctly set to `-2`.
## 0.17.0
- Remove constants and types specific to Microsoft SQL Server.
- `SS_LENGTH_UNLIMITED`
- `SsTime2`
- `SsTimestampOffset`
- `SS_VARIANT`
- `SS_UDT`
- `SS_XML`
- `SS_TABLE`
- `SS_TIME_2`
- `SS_TIMESTAMP_OFFSET`
- Renames `CDataType::UTinyInty` into `CDataType::UTinyInt`.
- Renames `Nullable` into `Nullability`.
## 0.16.0
- `ULen` is now a type alias for `usize`.
- `Len` is now a type alias for `isize`.
Both changes do not change binary size of these on any platform, but are more likely to result in portable downstream code.
## 0.15.0
- `SQLDescribeParam` signature changed. The type of the last parameter has been changed to `*mut Nullable`.
- `CDataType` has new Variants `Ard` and `Apd`.
## 0.14.0
- `field_identifier` parameter type in `SQLSetDescField` and `SQLSetDescFieldW` changed to `Desc`.
## 0.13.1
- Adds function `SQLSetDescFieldW`.
## 0.13.0
- Rewrites enumeration `StatementAttribute`.
- Adds function `SQLGetStmtAttr`.
- Adds function `SQLSetDescField`.
## 0.12.5
- `Numeric` members now all public.
## 0.12.4
- Derive `Default` for `Numeric`.
## 0.12.3
- Derive `Debug`, `PartialEq`, `Eq`, `Clone` and `Copy` for `Numeric`.
## 0.12.2
- Adds `SQLPutData`.
- Adds `Numeric`.
## 0.12.1
- A type alias for `SChar`.
## 0.12.0
- *Breaking Change*: `SqlDataType` has been converted from an enumeration into a newtype integer.
## 0.11.0
*Breaking Changes*:
- `SQLColAttributeW`: `field_identifier` parameter type has been changed to the new `Desc` enumeration.
- `Desc` has been renamed to `Description`.
## 0.1## 0.0
*Breaking Changes*:
- Enum variant names have been shortend and use now idiomatic CamelCasing.
- Type Names now also use idiomatic CamelCasing.
- The `SQL` prefix has been dropped from most type names.
- `InputOutput` has been renamed to `ParamType`. As the names of the enumeration should be derived of the Prefix of the associated constants in the C Headers.
- Enumerations which have been casted from integers are now newtypes in order to prevent undefined behaviour in case the enum is not complete or the driver/driver manager is not ODBC conform.
- `SqlReturn` is now a newtype i16 with predifined constants and is now named `Return`.
- `Nullable` is now a newtype i16 with predefined constants.
- `interval_type` in `IntervalStruct` has been changed from `Interval` to `c_int`.
## 0.9.0
- Adds `attributes::SQL_ATTR_CONNECTION_POOLING` and `attributes::SQL_ATTR_CP_MATCH` enums
- Implements Default trait for attribute values
- *Breaking Change*: `SQL_ATTR_APPLICATION_KEY` constant removed because it is not part of the ODBC standard.
If there is any software that depends on this constant defined, users are encouraged to open an
issue report
- *Breaking Change*: `SQL_OV_ODBC_2` constant removed because odbc-sys does not support OBDC versions < 3.## 0.
- *Breaking Change*: Enum OdbcVersion renamed to `SQL_ATTR_ODBC_VERSION` to better reflect it's intended use as a value
for environment attribute to be used with `SQLSetEnvAttr` and `SQLGetEnvAttr` functions
## 0.8.2
- Adds support for static linking
## 0.8.1
- Fix: Move `SQL_ATTR_ASYNC_STMT_EVENT` is now part of the `SqlStatementAttribute` enumeration.
## 0.8.0
- Adds `InfoType::SQL_ASYNC_MODE`
- Adds `InfoType::SQL_MAX_ASYNC_CONCURRENT_STATEMENTS`
- Adds `InfoType::SQL_ASYNC_DBC_FUNCTIONS`,
- Adds `InfoType::SQL_DRIVER_AWARE_POOLING_SUPPORTED`,
- Adds `InfoType::SQL_ASYNC_NOTIFICATION`
- Adds `SqlConnectionAttribute::SQL_ATTR_ASYNC_STMT_EVENT`
- Adds `SqlConnectionAttribute::SQL_ATTR_ASYNC_DBC_EVENT`
## 0.7.0
- Adds `SqlDataType::SQL_EXT_TIME_OR_TIME_INTERVAL`
- Adds `SqlDataType::SQL_EXT_TIMESTAMP`
- Adds `SqlAttributesStringLength`
- Adds `SqlConnectionAttribute::SQL_ATTR_ASYNC_ENABLE`
- Adds `SqlGetTypeInfo`
## 0.6.3
- Fix missing `SQLConnect`
## 0.6.2
- yanked due to missing `SQLConnect`
- add `SqlRowCount`
## 0.6.1
- Fix: `InputOutput` is now representend as `i16` instead of `u16` in C code.