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Re: partioning question
Posted by: Rick James
Date: May 24, 2009 09:29AM

p0, p1, etc, represent separate files containing portions of the data. Certain operations can act on individual partitions; eg, ALTER. You must have a PRIMARY KEY on your table, and (in for your example) it must include the field 'joined'.

If you have under, say, a million rows, partitioning does not buy much.

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