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## SQLite Release 3.1.0 On 2005 January 21 (3.1.0 ALPHA)

Changes associated with this release include the following:

- Autovacuum support added
- CURRENT_TIME, CURRENT_DATE, and CURRENT_TIMESTAMP added
- Support for the EXISTS clause added.
- Support for correlated subqueries added.
- Added the ESCAPE clause on the LIKE operator.
- Support for ALTER TABLE ... RENAME TABLE ... added
- AUTOINCREMENT keyword supported on INTEGER PRIMARY KEY
- Many SQLITE_OMIT_ macros inserts to omit features at compile-time and reduce the library footprint.
- The REINDEX command was added.
- The engine no longer consults the main table if it can get all the information it needs from an index.
- Many nuisance bugs fixed.

A complete list of SQLite releases in a single page is also available. A detailed history of every check-in is available at http://www.sqlite.org/src/timeline.