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sql - TSQL strip date from datetime

What is the best way to strip the date from a DATETIME so only time is left to do a comparison?

I know I can do the following:

CONVERT(DATETIME, CONVERT(VARCHAR(8), GETDATE(),8))

But this involves convert and characters. If I wanted to check whether a time (including minutes) was between two other times stored in DATETIME columns, is there an elegant way to do this without having to rely on converting to character strings?

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If you're using SQL 2008

SELECT CAST(GETDATE() AS TIME)

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