Mysql 테이블 전체 삭제

SET @tables = NULL;
 SELECT GROUP_CONCAT(table_schema, '.', table_name) INTO @tables
   FROM information_schema.tables 
   WHERE table_schema = 'timedealdb'; 
 SET @tables = CONCAT('DROP TABLE', @tables);
 PREPARE stmt FROM @tables;
 EXECUTE stmt;
 DEALLOCATE PREPARE stmt;