Question

I want to combine multiple tables result count in one result with column wise using MySql (see the result required) but i am confuse about this if you have any query or optimize way regarding this please answer me or helps are definitely appreciated also i was tried myself this Query with Union but seriously not success (see the Query Example)

Result required

post  post_comment_likes  post_comments  post_likes
2     0                   3              0

Query

SELECT COUNT(*) AS `post` FROM post WHERE user_id = "123456" UNION
SELECT COUNT(*) AS `post_comment_likes` FROM post_comment_likes WHERE user_id = "123456" UNION 
SELECT COUNT(*) AS `post_comments` FROM post_comments WHERE user_id = "123456" UNION
SELECT COUNT(*) AS `post_likes` FROM post_likes WHERE user_id = "123456" 

Answer 1

set @post = 0;
set @post_comment_likes = 0;
set @post_comments = 0;
Set @post_likes = 0;


 select count(*) into @post from .......;
 select count(*) into @post_comment_likes from ......;
 select count(*) into @post_comments from ......;
 select count(*) into @post_likes from ......;

select (@post + @post_comment_likes + @post_comments + @post_likes) ;

In the above code @post , @post_comment_likes , @post_comments , @post_likes are session variables , you prefix them with ‘@’ character
Using the above code you have access to count of each table.