doctrine/dbal — pull request #430 by deeky666 (2013-11-25 22:33:20+00:00)
Title: [DBAL-464] Fix dropping primary key with autoincrement column in MySQL

This PR fixes a table alteration scenario in MySQL, where a primary key is to be dropped that contains an autoincrement column. MySQL requires the autoincrement column attribute to be removed first before dropping the primary key. Otherwise the table alteration will fail.