Mine

UPDATE `creature_template` SET `class`='3' WHERE `subname`='Hunter Trainer';
UPDATE `creature_template` SET `class`='8' WHERE `subname`='Mage Trainer';
UPDATE `creature_template` SET `class`='5' WHERE `subname`='Priest Trainer';
UPDATE `creature_template` SET `class`='9' WHERE `subname`='Warlock Trainer';
UPDATE `creature_template` SET `class`='4' WHERE `subname`='Rogue Trainer';
UPDATE `creature_template` SET `class`='11' WHERE `subname`='Druid Trainer';