The first beta release of SQLAlchemy 0.7 is now available. This release features the past year's worth of new features, improvements, and usage patterns, including an all-new, unified event model, new extensions including so-called "hybrid" attributes as well as a new system of tracking changes on "mutable" scalar values, extensive performance improvements, new dialects, and a large number of other features and bug fixes. A full catalog of changes can be reviewed at 07Migration. Download SQLAlchemy 0.7 beta1 on the download page.
SQLAlchemy 0.7 is in active development and close to beta releases, featuring an all new unified event model as well as a host of other ORM and SQL engine features and improvements. The "Whats New" page for SQLAlchemy 0.7 is under construction at 07Migration.
SQLAlchemy 0.6 is now released. This release is the culmination of well over a year of effort towards restructuring and enhancements. Highlights of SQLAlchemy 0.6 include:
- Support for Python 2.4+, Python 3, and Jython
- Decouping of DBAPI adapters and database dialects allow any number of DBAPIs to be cleanly supported.
- Support for Sybase, mxODBC, pg8000, py-postgresql, OurSQL, MySQL-Connector-Python, zxjdbc is added, including new options and capabilities for many dialects (see the compatibility chart).
- Enhancements to "eager loading", including a new "subquery" eagerload that loads all collections using a maximally efficient query-per-relationship scheme.
- An entirely new unit of work system which runs more effectively and simply, using less memory and CPU.
- A flexible SQL compiler and execution system, now supporting RETURNING clauses when available, clause constructs for DDL elements (i.e. CREATE TABLE) and type objects, stricter SQL standard compliance where needed, and an extension system allowing the creation of new SQL constructs and open-ended extension to those provided.
- Query result caching capability, including an example illustrating integration with Beaker.
SQLAlchemy 0.6 has already been in production usage for several months and has been tested by hundreds. Be sure to review the full list of whats new at 06Migration.
The sprinting continues today in Atlanta after a week where at least a dozen people got involved, some new to SQLAlchemy, some veterans. New things coming out include our all-new buildbot, as well as several new dialects which are Python 3 compatible - PyPostgreql, OurSQL, MySQL-connector-Python. Python 3 tests are passing 100% for pg8000 and OurSQL, so Postgresql and MySQL are now covered for Python 3. We also have mxODBC for MSSQL in the works and have made a great leap forward in getting real Sybase support. Plus documentation updates galore, new declarative features, and a whole host of fixes and enhancements elsewhere. We'll soon be posting links to SQLAlchemy related talks and tutorials from Pycon 2010 as they become available. Thanks to everyone for the huge amount of involvement and stay tuned for SQLAlchemy 0.6 !