Re: Partition by Date Column
You can use any function or expression that returns an integer type. Currently, however, optimisation is limited to TO_DAYS() and YEAR().
For partitioning by KEY(), you can use DATE/TIME/DATETIME columns directly and the performance should be about the same as with any other column type.
Jon Stephens
MySQL Documentation Team @ Oracle
Orlando, Florida, USA
MySQL Dev Zone
MySQL Server Documentation
Oracle
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