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解决mysql使用not in 包含null值的问题
这篇文章主要介绍了解决mysql使用not in 包含null值的问题,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧 注意!!! select * from user where uid not in (a,b,c,null); 这个sql不回返回任何结果。要避免not in的list中出现null的情况。 另外: –如果null ...
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