Re: Update query Crashes the server
Posted by:
Rick James
Date: April 10, 2013 10:01PM
PLEASE file bugs in both places mentioned in the log.
Meanwhile, "IN ( SELECT ... )" is terribly inefficient until 5.6; suggest something more like:
UPDATE `news`
JOIN
( SELECT DISTINCT gallery_id
FROM gallery
WHERE app_status IN ('A', 'N') ) x
ON x.gallery_id = news.guid
SET news.`app_status` = 'D',
news.`load_status` = 'D'
WHERE news.feed_id !=21
news needs an index on guid if it does not already have one.
Is DISTINCT really needed? If not, then the query can be further simplified (and optimized).
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April 09, 2013 09:44AM
Re: Update query Crashes the server
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April 10, 2013 10:01PM
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