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Re: Compound index (pkey) not used when it should be
Posted by: Peter Brawley
Date: November 29, 2017 04:21PM

https://dev.mysql.com/doc/refman/5.5/en/innodb-buffer-pool.html may be useful.

InnoDB seems to have decided that using the data file will be just as fast. What's the performance without the Limit clause? Did you try Force Index, and if so with what result?

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Compound index (pkey) not used when it should be
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Dan Parker
November 29, 2017 01:39PM
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November 29, 2017 04:21PM
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November 29, 2017 04:38PM
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November 29, 2017 05:16PM
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November 29, 2017 05:25PM
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November 29, 2017 06:13PM
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November 29, 2017 06:23PM
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November 29, 2017 07:46PM
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November 30, 2017 10:31AM
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December 01, 2017 11:02AM
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December 01, 2017 11:05AM
Re: Compound index (pkey) not used when it should be
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Peter Brawley
December 01, 2017 11:19AM
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Dan Parker
December 01, 2017 11:26AM
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Peter Brawley
December 01, 2017 01:04PM
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December 01, 2017 05:01PM
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Øystein Grøvlen
December 01, 2017 10:10AM
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Dan Parker
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