Question

SELECT 
  (SELECT COUNT(*) FROM votes WHERE votes.vote = 1) AS upvotes,
  (SELECT COUNT(*) FROM votes WHERE votes.vote = -1) AS downvotes,
FROM votes WHERE link = <linkid>

Straight up question; how could this be optimized? I can’t think of any better way to do it but I’m bad at MySQL.

Thanks for any responses!

EDIT: To make things clear: I want it to return one row with two columns; upvotes and downvotes

Answer 1

Try using SUM instead of COUNT:

SELECT 
  SUM(vote = 1) AS upvotes,
  SUM(vote = -1) AS downvotes
FROM votes WHERE link = <linkid>

Note that this does not give you the same result as the query you posted. I think the query you posted is wrong!