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本章主要介绍了MySQL中支持的各种运算符。这些运算符可以帮助用户完成算术、比较、逻辑和位逻辑操作，读者在使用时要注意运算符的优先级。另外，在使用比较运算符时要保证比较的操作数类型是一致的，这样可以避免由于操作数类型的不一致而得出错误的数据。

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