Re: Partitioning Table - GPS Data
Posted by:
Rick James
Date: December 03, 2011 10:26AM
> KEY `IDX_DDL_PTP_IDR` (`VEI_ID`,`COORDINATE_DATE `,`PTP_IDR`),
is very efficient for doing
> WHERE COORDINATE_DATE between SUBDATE(#currentCoordinateDate#,2) AND #currentCoordinateDate#
> AND vei_id = #vehicleID#
The addition of PARTITIONing does not help anything for that SELECT.
Your previous attempt at PARTITIONing actually made _that_ SELECT worse. Your current PARTITIONing has no impact on the speed of _that_ SELECT.
You may be other reasons for PARTITIONing. For example, do you delete data that is over 11 months old by monthly DROPping and recreating the oldest partition?
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