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Re: Horrible MySql performance?
Posted by: Peter Brawley
Date: March 24, 2017 12:52AM

select count(*) without a Where clause is slow in innodb.

See http://stackoverflow.com/questions/19267507/how-to-optimize-count-performance-on-innodb-by-using-index for discussion and some tricks to keep innodb stats up-to-date.

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Re: Horrible MySql performance?
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