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Re: optimize request with order by and limit
Posted by: Rick James
Date: July 26, 2013 11:53PM

You have about 151048 rows with trkenv.EnvID IN ( 1,1,20 ) ?
Sounds like the performance cannot be solved without rearranging the fields in the tables.
The JOINs have to occur before the ORDER BY and LIMIT, so there is a lot of work that is subsequently thrown away.

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Re: optimize request with order by and limit
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July 26, 2013 11:53PM


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