SQL日期时间更新时间为00 :00:00 from all other time values

Question

有没有一种方法可以更新表中的所有列

2010-12-31 23:59:59.000

至

2010-12-31 00:00:00.000

这样的事情？

UPDATE t1
SET [Posting Date] = [Posting Date] with ms = 00:00:00.000
WHERE ms = other than 00:00:00.000
GO

Answer 1

UPDATE t1
SET [Posting Date] = cast([Posting Date] as date)
WHERE cast([Posting Date] as time) > '00:00'