A class of issues where a database executes a query inefficiently due to the optimiser selecting an innapropriate query plan.

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optimize big sql query

My query has to return a statistics for example for march containing productname and price and its sidedishes (1:n relation) with the right price of each sidedish and the right tax for each sidedish ...
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Recommendation for mysql please :MySQLTuner [closed]

>> MySQLTuner 1.3.0 - Major Hayden <major@mhtx.net> >> Bug reports, feature requests, and downloads at http://mysqltuner.com/ >> Run with '--help' for additional options ...