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Re: Optimizing a query with UNION
Posted by: Peter Brawley
Date: March 14, 2013 09:08PM

The Explain result says the performance killer is Order By on the Union. Did you try adding ID to the reply.question_id index

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Optimizing a query with UNION
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Matthew Devine
March 14, 2013 03:28PM
Re: Optimizing a query with UNION
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Peter Brawley
March 14, 2013 09:08PM
Re: Optimizing a query with UNION
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Rick James
March 14, 2013 10:41PM
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Matthew Devine
March 15, 2013 09:13AM
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Rick James
March 15, 2013 11:32PM
Re: Optimizing a query with UNION
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Matthew Devine
March 16, 2013 05:29AM


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