MySQL :: Re: No other way than delete primary key to create partitions by single datetime columns?

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Re: No other way than delete primary key to create partitions by single datetime columns?

Posted by: Rick James
Date: August 24, 2015 12:36PM

An INDEX is unlikely to be "more powerful after the table is partitioned". A tiny advantage is that the BTree containing the index might be one level shallower. However, the pruning to pick the partition cost something -- probably as much as the BTree saves!

My blog contains the only 4 use cases I have found where PARTITIONing improves performance:
http://mysql.rjweb.org/doc.php/partitionmaint

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No other way than delete primary key to create partitions by single datetime columns?

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Sam Young

August 20, 2015 08:00PM

Re: No other way than delete primary key to create partitions by single datetime columns?

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Jonathan Stephens

August 21, 2015 02:53AM

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Sam Young

August 23, 2015 08:57PM

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Rick James

August 22, 2015 03:35PM

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Sam Young

August 23, 2015 09:23PM

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Rick James

August 24, 2015 12:36PM

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Sam Young

August 26, 2015 12:53AM

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Rick James

August 26, 2015 10:02AM

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Sam Young

August 26, 2015 07:42PM

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