Oracle中查询同一个日期字段,格式不同的问题
数据库中某日期字段有如下数据,sql语句如下: select age, money, birthday from userinfo 仔细观察,日期字段有两种格式
数据库中某日期字段有如下数据,sql语句如下:
仔细观察,,日期字段有两种格式的内容,一种带时间的,一种不带时间的,在项目中很可能是由于需求变动导致格式调整引起,假如我们只想查询带有时间的这种数据如何来处理,真实想通过length函数判断长度,发现不能达到目的,不管那种内容返回的长度相同,于是想到如下解决办法,请看SQL。
结果如下:
这只是同事问我的时候我给出的临时方案,有更好的方法的达人回复我下,谢谢!

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