Question

this is my database

database schema http://slashdir.com/php/blogg/images/bloggdb.png

What i want to do, is, for a given userid, show the total times he has been reported.
I have read various other questions on the matter, but I’m still stumped.

The latest query i tried was

select
   sum(posts.timesreported + comments.timesreported) AS total_reports
FROM 
  posts 
  INNER JOIN comments ON (posts.userid = comments.userid) 
WHERE posts.userid=5 AND comments.userid=5;

But this must be wrong as the number i get is much too high

Thanks!

Answer 1

SELECT 
 CASE WHEN NULL
      THEN 0
      ELSE (select sum(posts.timesreported) AS total_posts_reports
            FROM  posts  INNER JOIN users ON (posts.userid = users.id) 
            WHERE posts.userid=5) 
      END 
 +
 CASE WHEN NULL
      THEN 0
      ELSE (select sum(comments.timesreported) AS total_comments_reports
            FROM  comments  INNER JOIN users ON (comments.userid = users.id) 
            WHERE comments.userid=5) 
      END
FROM DUAL;