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Re: Is Union Queries run in Parallel form or not.
Posted by: Peter Brawley
Date: October 18, 2017 08:32AM

Assuming you mean by "parallel form" use of multipleprocessors if available, see https://dba.stackexchange.com/questions/5666/possible-to-make-mysql-use-more-than-one-core

The best way to improve query performance is to run Explain on it and use those results to optimise indexing for it.

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Re: Is Union Queries run in Parallel form or not.
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