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mysql 数据库存日期一般用什么类型？
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我之前用的 date ，但是在做日期减法，或者前端传来的范围时间查找，总是要去转换成时间戳，然后再转换成 date 类型，然后才能查询，所以我在想能不能直接存 int 类型的时间戳会比较好。
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