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Re: Using indexes for "IN" clauses with composite values
Posted by: Peter Brawley
Date: April 14, 2014 01:11PM

Ah, sorry, I misread the query, it's not a semijoin.

I think row constructor optimisation came in with 5.7.3, see https://dev.mysql.com/doc/refman/5.7/en/range-optimization.html#row-constructor-range-optimization.

So try it with standard syntax.

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Re: Using indexes for "IN" clauses with composite values
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April 14, 2014 01:11PM


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