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mysql中怎么判断某个字段是null还是not null
- WBOYOriginal
- 2016-06-13 10:46:171275browse
mysql中如何判断某个字段是null还是not null
用php 在 mysql中如何判断某个字段是null还是not null
------解决方案--------------------
isnull
------解决方案--------------------
用IS, 不能用=或者==
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