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Re: Bad order by performance (5.7.12 under Aurora)
Posted by: Frederic Descamps
Date: November 26, 2019 01:46PM

Ciao Nicola,

the temp table might not involve slowness, it depends if it goes to disk or not.

However it might be good to have also the tables definitions too.

I also recommend you to try MySQL 8 where you can benefit from many optimizer improvements.

We also have now explain format=tree and explain analyze !

Regards,

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Re: Bad order by performance (5.7.12 under Aurora)
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November 26, 2019 01:46PM


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