Question

如何循环查询的结果集，并在循环中结果集获取数据库中的列值和触发插入查询。

以下是我的SP：

Input parameter listvalues and value is 1,2,3,4,5

SET @t1 = CONCAT("SELECT ID FROM interest WHERE ID IN(",listvalues,")");
PREPARE stmt1 FROM @t1;
EXECUTE stmt1;
DEALLOCATE PREPARE stmt1;

然后如何循环stmt1以将所有ID值插入另一个表中。

我的SP：

BEGIN 
INSERT INTO `registration`(`FirstName`,`LastName`,`EMail`,`PhoneNumber`,`Gender`,`State`,`City`,`ImagePath`,`IsDeleted`,`CreatedDate`,`ModifiedDate`)
VALUES(FirstName,LastName,EMail,PhoneNumber,Gender,State,City,ImagePath,0,NOW(),NOW());

SET @RegID = LAST_INSERT_ID();

SET @t1 = CONCAT("INSERT INTO `userinterest` (`InterestId` , `UserId`) VALUES((SELECT ID FROM interest WHERE ID IN(",InterestList,")),",@RegID,")");
PREPARE stmt3 FROM @t1;
EXECUTE stmt3;
DEALLOCATE PREPARE stmt3;

END

但是它会给出错误子查询返回超过1行

Answer 1

最后我将存储过程写为：

BEGIN 
INSERT INTO `registration`(`FirstName`,`LastName`,`EMail`,`PhoneNumber`,`Gender`,`State`,`City`,`ImagePath`,`IsDeleted`,`CreatedDate`,`ModifiedDate`)
VALUES(FirstName,LastName,EMail,PhoneNumber,Gender,State,City,ImagePath,0,NOW(),NOW());

SET @RegID = LAST_INSERT_ID();

SET @t1 = CONCAT("INSERT INTO `userinterest` (`InterestId` , `UserId`) SELECT ID AS InterestId, ",@RegID," AS UserId FROM interest WHERE ID IN(",InterestList,")");
PREPARE stmt3 FROM @t1;
EXECUTE stmt3;
DEALLOCATE PREPARE stmt3;

END

Answer 2

在查询中执行INSERT：

SET @t1 = CONCAT("INSERT INTO otherTable (interest_id)
                  SELECT ID FROM interest WHERE ID IN(",listvalues,")");

在MYSQL存储过程中循环选择查询结果集

2 个答案: