err] 1241 - operand should contain 1 column(s) 1. 错误消息的含义 错误消息 "err] 1241 - operand should contain 1 column(s)" 是一个 MySQL 数据库错误,表示在 SQL 查询中,操作数(operand)应该只包含一列,但实际上包含了多于一列的数据。 2. 可能导致该错误的常见场
“ERROR 1241 (21000): Operand should contain 1 column(s)”是MySQL数据库中的一个常见错误。这个错误发生的原因通常是在你尝试在期望一个列值的地方使用了一个返回多
提示:"#1241 - Operand should contain 1 column(s)"错误 子查询有问题,改为: UPDATE ies_message set msgsendtype=3 where msgsendtype IN (SELECT msgsendtype FROM ies_message where msgsendtype=2) 例三: Attempting to insert some data with MySQL using a subquery like so: INSERT INTO dw_plyn...
SQL语句错误，提示："#1241 - Operand should contain 1 column(s)"错误，是因为操作的数据里查询结果没有列值，指明要查的列即可。工具/材料：以Management Studio为例。1、首先在桌面上，点击“Management Studio”图标。2、然后在该界面中，点击右上角“新建查询”选项。3、之后在该界面中，输入指...
错误:ERROR 1241 (21000): Operand should contain 1 column(s) 就是说操作数应该只有一列 我写的: select c_name from t_student where c_age in (select max(c_age),min(c_age) from t_student); 1 in后面是两列了,所以报错。 我想找出年龄最大和最小对应的人 ...
im only looking to return 1 post for each of the where's. SQLSTATE[21000]:Cardinalityviolation:1241Operandshould contain1column(s) select *from`posts`where(`created_at`= ( select *from`posts`order by`created_at`desc limit1) )or(`created_at`= ( select *from`posts`order by`created_at...
--根据报错来看 ，你下面的一个查询返回了两个值 cou_name as 最优秀课程,sco_score as 成绩--Operand should contain 1 column(s)(select cou_name as 最优秀课程,sco_score as 成绩 from cou,sco where cou.cou_id=sco.cou_id group by stu_id having sco_score=max(sco_score)),(...
1241 - Operand should contain 1 column(s) Akis Giannopoulos March 24, 2012 10:00AM Re: 1241 - Operand should contain 1 column(s) Rick James March 26, 2012 12:00AM Sorry, you can't reply to this topic. It has been closed.
SELECT * FROM ies_message where msgsendtype=2 查询出来的是几列,msgsendtype IN 后面只能跟一列.
#1241 - Operand should contain 1 column(s) problem is with first lines SELECT mobilenumber, message, datetime1 FROM readcsv WHERE mobilenumber IN without this it is working fine SELECT mobilenumber, message, datetime1 FROM readcsv WHERE mobilenumber IN ( SELECT node.nid AS ...