DROP PROCEDURE IF EXISTS add_migration;
delimiter ??
CREATE PROCEDURE `add_migration`()
BEGIN
DECLARE v INT DEFAULT 1;
SET v = (SELECT COUNT(*) FROM `migrations` WHERE `id`='20200316170243');
IF v=0 THEN
INSERT INTO `migrations` VALUES ('20200316170243');
-- Add your query below.


-- Update quest status for players who have already done the Naxx attunement quests.
INSERT INTO character_queststatus (guid,quest,status,rewarded)
SELECT a.guid,9378,1,1 FROM character_queststatus a WHERE a.quest IN(9121) AND NOT EXISTS (SELECT b.quest FROM character_queststatus b WHERE a.guid=b.guid AND b.quest IN(9378));
INSERT INTO character_queststatus (guid,quest,status,rewarded)
SELECT a.guid,9378,1,1 FROM character_queststatus a WHERE a.quest IN(9122) AND NOT EXISTS (SELECT b.quest FROM character_queststatus b WHERE a.guid=b.guid AND b.quest IN(9378));
INSERT INTO character_queststatus (guid,quest,status,rewarded)
SELECT a.guid,9378,1,1 FROM character_queststatus a WHERE a.quest IN(9123) AND NOT EXISTS (SELECT b.quest FROM character_queststatus b WHERE a.guid=b.guid AND b.quest IN(9378));


-- End of migration.
END IF;
END??
delimiter ; 
CALL add_migration();
DROP PROCEDURE IF EXISTS add_migration;