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mysql - sql中的in与not in,exists与not exists的区别？为什么not in 没有用到索引？
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PHP中文网 2017-04-17 16:45:17
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阿神
阿神2017-04-17 16:47:17 1 floor

You can read this blog post to briefly talk about the difference between in and not in, exists and not exists in sql

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