Nate Lampton authored Oct 30, 2011 and catch committed Nov 01, 2011

Issue #22336 by quicksketch, scor, boombatower, and rfay. Move all core Drupal files under a core subdirectory.

Issue #561422 follow-up by Damien Tournoud, lyricnz, chx: Fixed SQLite support for faster db prefixes.

#850852 by Damien Tournoud, dmitrig01, chx: Fixed transaction failure and allow concurrent testing on SQLite

- Patch #878198 by pwolanin, Damien Tournoud: add back a method to the DB driver interface that reports the server version.

- Patch #878198 by pwolanin: add back a method to the DB driver interface that reports the server version.

- Patch #669794 by andypost, Josh Waihi, aspilicious, moshe weitzman, catch: use savepoints for nested transactions.

- Patch #754192 by andypost, Damien Tournoud: critical bug: fixed transaction support for old sqlite versions.

- Patch #279851 by catch, David Strauss, Damien Tournoud, asimmonds, c960657, JohnAlbin, drawk, pwolanin, robertDouglass, coltrane: replace LOWER() with db_select() and LIKE() where possible.

#714994 by Damien Tournoud: Fixed SQLite should not forcefully convert numeric strings into numbers.

#550124 by c960657, catch, and Crell: Remove prepared statement caching, which was a nice idea, but uses up tons of memory without any tangible performance benefits.

#633678 by Josh Waihi, chx, Crell, David Strauss, and Damien Tournoud: Make sequence API work on non-MySQL databases.

#564394 by Berdir and Crell: Removed database BC layer. nah nah nah nah... hey hey hey... gooood byeeee...

#464878 by chx: Fix SQLite abstraction layer to accept arrays of placeholder values without leading :, for compatibility with PDO.

- Patch #349500 by Damien Tournoud et al: made db_query_temporary() generate its own temporary table names.

- Patch #342693 by Damien Tournoud et al: DatabaseStatement Prefect iterator did not implement a proper forward-only one cursor.

- Patch #342366 by John Morahan, Dave Reid, Damien Tournoud: fixed replacement of unnamed placeholders in SQLite.