Table of Contents [+/-]
SELECT
and Other Statements [+/-]EXPLAIN
SELECT
QueriesWHERE
Clause OptimizationIS NULL
OptimizationLEFT JOIN
and RIGHT JOIN
OptimizationORDER BY
OptimizationGROUP BY
OptimizationDISTINCT
OptimizationIN
/=ANY
SubqueriesLIMIT
Optimizationoptimizer_switch
to Control the
OptimizerINFORMATION_SCHEMA
OptimizationINSERT
StatementsUPDATE
StatementsDELETE
StatementsMyISAM
Key CacheMyISAM
Index Statistics CollectionOptimization is a complex task because ultimately it requires understanding of the entire system to be optimized. Although it may be possible to perform some local optimizations with little knowledge of your system or application, the more optimal you want your system to become, the more you must know about it.
This chapter explains different ways to optimize MySQL and provides examples. Remember, however, that there are always additional ways to make the system even faster, although they may require increasing effort to achieve.
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