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Re: Join by date range unacceptably slow
Posted by: Peter Brawley
Date: May 15, 2017 05:55PM

MySQL version?

Run Explain on the query, then have a look at to see of you can find an index configuration that helps.

If you can't, or if you have an older version, you may have to accumulate the counts in a temp table, then do the updates from that.

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Re: Join by date range unacceptably slow
May 15, 2017 05:55PM

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