Issue #1923406 by stefan.r, yannickoo: Use ASCII character set on alphanumeric fields so we can index all 255 characters

Issue #2389455 by hussainweb, AjitS, Mile23, subhojit777, tibbsa, Ayesh: Clean-up system module test members - ensure property definition and use of camelCase naming convention

Issue #1668644 by Island Usurper, phayes, daffie, Brandonian, gease: PostgreSQL: Impossible to change a field to serial, bigserial, or numeric

Issue #1013034 by bzrudi71, jaredsmith, andypost, alexpott, dbcollies, ncl, jhedstrom, kathyh: PostgreSQL constraints do not get renamed by db_rename_table()

Issue #2232425 followup by danblack, stefan.r: Fixed Database Schema field/column default value is not properly quoted via PDO::quote().

Issue #2297993 by cilefen, marthinal, ivanjaros: Fixed MySQL column and table comments are not truncated properly.

Issue #697760 by sun: Replace getInfo() in tests with native phpDoc + annotations (following PHPUnit).

Issue #2232425 by danblack: Database Schema field/column default value is not properly quoted via PDO::quote().

Issue #2080295 by mcrittenden: Remove Unused local variable  from /core/modules/system/lib/Drupal/system/Tests/Database/SchemaTest.php.

Issue #1431658 by Albert Volkman, kid_icarus, ChinggizKhan, xjm, rgristroph, connork: Clean up API docs for many system tests

Initial move and rename of database classes to PSR-0 namespaces.  So far only MySQL has been converted.

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.

#973314 by tekante, Damien Tournoud: Fixed PDO exception when attempting to add a new not null field with initial value

#927828 by Damien Tournoud, LaurentAjdnik, boombatower: Fixed contrib can't specify custom schema types. Should fix Date module. Yay.

#500866 by boombatower, solotandem: Remove t() from assertion messages in SimpleTest, so translators do not get 1000s of bogus strings.

- Patch #728338 by sun, Crell: standardize on 'field' in function names. 'It has to get worse before it can get better.'

#522786 by stormsweeper: Fixed Postgres numeric check needs to happen after precision check in schema generation.