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Re: Why is ORDER BY ASC is slow but ORDER DESC is fast ? and how can i fix it ?
Posted by: Rick James
Date: October 03, 2015 08:01PM

Interesting.

Please provide

SHOW CREATE TABLE

EXPLAIN SELECT (with ASC and with DESC)

And run this for each direction:
FLUSH STATUS;
SELECT ...
SHOW SESSION STATUS LIKE 'Handler%';

It would probably help to have the composite index:
INDEX(enabled, category)

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Re: Why is ORDER BY ASC is slow but ORDER DESC is fast ? and how can i fix it ?
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October 03, 2015 08:01PM


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