Deadly Sins of MySQL Operations
Deadly Sins of MySQL Operations
Deadly Sins of MySQL Operations
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Detec8ng Duplicate Indexes • Use pt-duplicate-key-checker to report: # ################################################################# test.Foo# ################################################################# x is a left-prefix <strong>of</strong> x_2# Key definitions:# KEY `x` (`x`),# KEY `x_2` (`x`,`y`),# Column types:# `x` int(11) default null# `y` int(11) default null# To remove this duplicate index, execute:ALTER TABLE `test`.`Foo` DROP INDEX `x`;
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