-- DB update 2021_06_30_00 -> 2021_07_06_00 DROP PROCEDURE IF EXISTS `updateDb`; DELIMITER // CREATE PROCEDURE updateDb () proc:BEGIN DECLARE OK VARCHAR(100) DEFAULT 'FALSE'; SELECT COUNT(*) INTO @COLEXISTS FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'version_db_characters' AND COLUMN_NAME = '2021_06_30_00'; IF @COLEXISTS = 0 THEN LEAVE proc; END IF; START TRANSACTION; ALTER TABLE version_db_characters CHANGE COLUMN 2021_06_30_00 2021_07_06_00 bit; SELECT sql_rev INTO OK FROM version_db_characters WHERE sql_rev = '1625236840920068800'; IF OK <> 'FALSE' THEN LEAVE proc; END IF; -- -- START UPDATING QUERIES -- INSERT INTO `version_db_characters` (`sql_rev`) VALUES ('1625236840920068800'); UPDATE `character_skills` SET `value` = 300, `max` = 300 WHERE `skill` = 762 AND `value` > 300 AND `max` > 300; -- -- END UPDATING QUERIES -- UPDATE version_db_characters SET date = '2021_07_06_00' WHERE sql_rev = '1625236840920068800'; COMMIT; END // DELIMITER ; CALL updateDb(); DROP PROCEDURE IF EXISTS `updateDb`;