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sql server unique约束能区分大小写吗?

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sql server unique约束能区分大小写吗?

最近客户说重传逻辑实现困难,结果需要数据库实现去重.自己坑自己的例子是:我用'h'代表小时平均值,'H'代表小时最大值.发现加约束不如意啊:'h' 'H'只接受一个了.数据库本身不能大改成区分大小写了,就这张表能动,请问有什么简单办法做到?


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做个触发器判断是否重复吧


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