DELIMITER $$
CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `tmp`.`clean`()
BEGIN
	DECLARE vTableName VARCHAR(255);
	DECLARE vDone BOOL;

	DECLARE cur CURSOR FOR
		SELECT TABLE_NAME
			FROM information_schema.TABLES
			WHERE TABLE_SCHEMA = 'tmp'
				AND CREATE_TIME < TIMESTAMPADD(DAY, 1, util.VN_NOW());

	DECLARE CONTINUE HANDLER FOR NOT FOUND SET vDone = TRUE;

	OPEN cur;
	l: LOOP
		SET vDone = FALSE;
		FETCH cur INTO vTableName;

		IF vDone THEN
			LEAVE l;
		END IF;

		CALL util.exec(CONCAT('DROP TABLE `tmp`.`', vTableName, '`'));
	END LOOP;
	CLOSE cur;
END$$
DELIMITER ;