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Re: Can not partition existings tables
Posted by: Rick James
Date: June 04, 2010 08:22PM

Around 30 values? And it is a BIGINT?

You will probably have to give up your AUTO_INCREMENT.

A Partitioned table MUST _either_
* Have no PRIMARY KEY, nor UNIQUE key; _or_
* Have the partition key in EVERY PRIMARY KEY and UNIQUE key.

Without those constraints, it is too costly to assure that an INSERT does not violate UNIQUEness.

Note: All those extra indexes are pretty useless once you Partition the table -- any query that wants to use any of them would have to touch every partition. That is, Partition "pruning" cannot be used to speed things up (in those cases).

What is your goal in Partitioning? I ask this because there are some goals for which Partitioning does not help as much as one would hope.

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Re: Can not partition existings tables
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June 04, 2010 08:22PM


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