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Rewrite Your Complex MySQL Queries for Better Performance

Talkat FOSDEM 2021 · on Sunday, 2021-02-07· at 15:30· D.mysql· [databases, web-performance]

Shows how MySQL query optimizer can choose very different plans for equivalent SQL and demonstrates concrete rewrite techniques to get better performance. Covers transforming subqueries into more efficient forms, when to replace subqueries with window functions to speed up queries, and which of these rewrites MySQL 8.0 can perform automatically.

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