摘要:
DROP temporary TABLE IF EXISTS Temporary_T; create temporary table if not exists Temporary_T(id int ); IF NOT EXISTS:是说如果你的临时表如‘Temporary_T’不存在就创建临时表 alter table Temporary_T add d0 DECIMAL 添加一个字段USE `jj`;DROP procedure IF EXISTS `Day`;DELIMITER $$USE `jj`$$CREATE DEFINER=`root`@`localhost` ... 阅读全文