information_schema 没有权限
Select 'SET FOREIGN_KEY_CHECKS = 0;' union Select CONCAT( 'drop table ', table_name, ';' ) FROM information_schema.tables Where table_name LIKE 'model_keyword_log_%' UNION Select 'SET FOREIGN_KEY_CHECKS = 1;'
information_schema 有权限
SET FOREIGN_KEY_CHECKS = 0; SET GROUP_CONCAT_MAX_LEN=32768; SET @tables = NULL; SELECT GROUP_CONCAT('`', table_name, '`') INTO @tables FROM information_schema.tables WHERE table_schema = (SELECT DATABASE()) and table_name like 'model\_keyword\_log\_%'; SELECT IFNULL(@tables,'dummy') INTO @tables; SET @tables = CONCAT('DROP TABLE IF EXISTS ', @tables); PREPARE stmt FROM @tables; EXECUTE stmt; DEALLOCATE PREPARE stmt; SET FOREIGN_KEY_CHECKS = 1;