标签：套餐 format div you err comm check schema mys
1.如此执行语句不行，需要在 delimiter
IF not EXISTS ( SELECT * FROM information_schema. COLUMNS WHERE table_schema = ‘thc_rcm‘ AND table_name = ‘Cs_AccountBillDetail‘ AND column_name = ‘shopSetItemId‘ ) THEN ALTER TABLE `thc_rcm`.`Cs_AccountBillDetail` ADD COLUMN `shopSetItemId` varchar(64) DEFAULT NULL COMMENT ‘套餐的订单明细ID‘ AFTER `itemId`; END IF;
2.这样写也不行，因为这样的语句必须在存储过程里执行
DELIMITER // IF not EXISTS ( SELECT * FROM information_schema. COLUMNS WHERE table_schema = ‘thc_rcm‘ AND table_name = ‘Cs_AccountBillDetail‘ AND column_name = ‘shopSetItemId‘ ) THEN ALTER TABLE `thc_rcm`.`Cs_AccountBillDetail` ADD COLUMN `shopSetItemId` varchar(64) DEFAULT NULL COMMENT ‘套餐的订单明细ID‘ AFTER `itemId`; END IF; END// DELIMITER ;
3.OK
DELIMITER // CREATE PROCEDURE thc_rcm_change () BEGIN IF not EXISTS ( SELECT * FROM information_schema. COLUMNS WHERE table_schema = ‘thc_rcm‘ AND table_name = ‘Cs_AccountBillDetail‘ AND column_name = ‘shopSetItemId‘ ) THEN ALTER TABLE `thc_rcm`.`Cs_AccountBillDetail` ADD COLUMN `shopSetItemId` varchar(64) DEFAULT NULL COMMENT ‘套餐的订单明细ID‘ AFTER `itemId`; END IF; END// DELIMITER ; CALL thc_rcm_change (); DROP PROCEDURE IF EXISTS thc_rcm_change;
4.将添加字段变为删除字段则执行不通过，待解？？？？？？？？？？？
DELIMITER // CREATE PROCEDURE thc_rcm_change () BEGIN IF not EXISTS ( SELECT * FROM information_schema. COLUMNS WHERE table_schema = ‘thc_rcm‘ AND table_name = ‘Cs_AccountBillDetail‘ AND column_name = ‘shopSetItemId‘ ) THEN ALTER TABLE `thc_rcm`.`Cs_AccountBillDetail` drop COLUMN shopSetItemId; END IF; END// DELIMITER ; CALL thc_rcm_change (); DROP PROCEDURE IF EXISTS thc_rcm_change;
错误提示
Query execution failed
原因：
SQL 错误 [1064] [42000]: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘) THEN
ALTER TABLE `thc_rcm`.`Cs_AccountBillDetail` drop column setMealDetai‘ at line 1
Query execution failed
标签：套餐 format div you err comm check schema mys
原文地址：https://www.cnblogs.com/guchunchao/p/9861363.html
