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Re: Query slow on Windows, fast on Ubuntu
Posted by: Øystein Grøvlen
Date: January 23, 2018 09:11AM

I think default for innodb_buffer_pool_size in 5.5 was 128M. How large is your database?

Without moving the predicates to WHERE, I do not think there is much the optimizer can do to improve this query.

I also recommend upgrading to MySQL 5.7. It will in many cases use query plans with a better join order. (You still need to have the predicates in WHERE, but straight_join should not be necessary.)

Øystein Grøvlen,
Senior Principal Software Engineer,
MySQL Group, Oracle,
Trondheim, Norway

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Written By
January 22, 2018 09:24AM
Re: Query slow on Windows, fast on Ubuntu
January 23, 2018 09:11AM

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