MySQL存储过程插入问题
以下情况适用:MySQL存储过程插入问题,mysql,sql,sql-server,stored-procedures,Mysql,Sql,Sql Server,Stored Procedures,以下情况适用: CREATE TEMPORARY TABLE IF NOT EXISTS `smth_table` ( `login` VARCHAR(20), `password` VARCHAR(20), `type` INT(11), `account_state` DECIMAL(12,4) ); PREPARE Selection FROM "INSERT INTO `smth_table` (SELECT ta.`login`, ta.`passwor
CREATE TEMPORARY TABLE IF NOT EXISTS `smth_table` (
`login` VARCHAR(20),
`password` VARCHAR(20),
`type` INT(11),
`account_state` DECIMAL(12,4)
);
PREPARE Selection FROM
"INSERT INTO `smth_table`
(SELECT ta.`login`, ta.`password`, ta.`type`, ta.`account_state`
FROM tableA ta
INNER JOIN tableB tb ON tb.id_client = ta.id_client
WHERE tb.id_lot = ? AND ta.`type` MOD 2 = 0
AND ta.first_use = '0000-00-00 00:00:00'
AND ta.account_state = 0
LIMIT ?)";
SET @WHERE = var1;
SET @LIMIT = var2;
EXECUTE Selection USING @WHERE, @LIMIT;
DEALLOCATE PREPARE Selection;
DECLARE curs CURSOR FOR
SELECT `password` FROM `smth_table`;
DECLARE CONTINUE HANDLER
FOR NOT FOUND SET v_finished = 1;
OPEN pin_curs;
get_pass: LOOP
FETCH curs INTO pass;
IF v_finished = 1 THEN
LEAVE get_pass;
END IF;
UPDATE tableA ta INNER JOIN tableB tb
ON tb.id_client = ta.id_client
SET `type` = `type` | 1,
`account_state` = `account_state` + 5
WHERE tb.id_lot = var1
AND `password` = pass;
END LOOP get_pass;
CLOSE curs;
END
为什么在运行此存储过程时,临时表中填充的内容超过了限制?请记住,我通过过程中传递的in变量设置了限制,顺便说一句,它是10。但是当我运行这个过程时,它在temp表中插入了100多行,我不明白为什么,它应该只插入10行。解决了强> 问题在于,我没有在再次创建表时删除它,从而一次又一次地插入相同的值
DROP TABLE IF EXISTS `smth_table`;
这将在创建之前插入,并且查询将平滑运行:-)