Re: Subquery with range uses filesort
Posted by:
Rick James
Date: November 17, 2013 07:42PM
WHERE (a,b) = (c,d)
is not well optimized
Turn it into a JOIN, not a subquery.
If that does not help, then let's revisit it.
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November 16, 2013 02:42PM
Re: Subquery with range uses filesort
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