Subtract 24hrs in T-SQL from Today's Date

I'm looking for a way to Subtract 24hrs in T-SQL 开发者_开发知识库from Today's Date

Thanks!

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 SELECT GETDATE() - 1

The -1 substracts one day from current date (GETDATE())

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DECLARE @Now datetime, @Calc datetime

SET @Now = GetDate()
SET @Calc = DateAdd(hh, -24, @Now)

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select dateadd(d,-1,GETDATE())

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SELECT DATEADD(dd, -1, GETDATE()) AS yesterday