Question

I am trying to store sub-query result in session variable using MySQL, but the issue is when I execute this Query like this (see the Query below) the error message will be show like this (see the Error message below).

I don’t know how to solve this issue.

(0 row(s) affected)
Execution Time : 00:00:00:343
Transfer Time  : 00:00:00:000
Total Time     : 00:00:00:343

Error Code : 1222
The used SELECT statements have a different number of columns

Execution Time : 00:00:00:000
Transfer Time  : 00:00:00:000
Total Time     : 00:00:00:000

Query

SET @post := 0;

SELECT user_name,
(SELECT COUNT(*) INTO @post  FROM post WHERE user_id = '23332'),
@post 
FROM `user_fans` WHERE user_id = '23332';

Answer 1

SET @post := 0;

SELECT  user_name,
        @post := (SELECT COUNT(*) FROM post WHERE user_id = '23332'),
        @post 
FROM    `user_fans`
WHERE   user_id = '23332';