Optimise & improve performance of this MYSQL query
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by
David
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Published on 2012-04-13T16:58:25Z
Indexed on
2012/04/13
17:30 UTC
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Hit count: 208
SELECT u.id, u.honour, COUNT(*) + 1 AS rank
FROM user_info u
INNER JOIN user_info u2
ON u.honour < u2.honour
WHERE u.id = '$id'
AND u2.status = 'Alive'
AND u2.rank != '14'
This query is currently utterly raping my server. It works out based on your honour what rank you are within the 'user_info' table which stores it out of all our users.
Screenshot for explain.
http://cl.ly/370z0v2Y3v2X1t1r1k2A
SELECT u.id, u.honour, COUNT(*)+1 as rank
FROM user_info u
USE INDEX (prestigeOptimiser)
INNER JOIN user_info u2
ON u.honour < u2.honour
WHERE u.id='3'
AND u2.status='Alive'
AND u2.rank!='14'
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