UPDATE IGNORE `npc_trainer` SET `spell`=48045 WHERE `spell`=49821;
UPDATE `npc_trainer` SET `spellcost`=8500 WHERE `spell`=48045;
INSERT INTO `npc_trainer` VALUES
(3046,48045,8500,0,0,75),
(3600,48045,8500,0,0,75);
DELETE FROM `npc_trainer` WHERE `spell`=49821;