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Re: Query execution plan
Posted by: Rick James
Date: May 15, 2012 07:22PM

I do not believe you get any "partition pruning" with the DIV function. I suggest you get rid of DIV and change to strict comparisons to the time values you have.

http://dev.mysql.com/doc/refman/5.6/en/partitioning-pruning.html
http://dev.mysql.com/doc/refman/5.6/en/partitioning-limitations-functions.html

You might get a more detailed answer on the PARTITION forum; one of the developers sometimes trolls there.

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