从日期获取年，月或日

参考：

DECLARE @D DATETIME = GETDATE()

SELECT DATEPART(YEAR,@D) AS [YEAR], DATEPART(MONTH,@D) AS [MONTH], DATEPART(DAY,@D) AS [DAY] 

SELECT YEAR(@D) AS [YEAR], MONTH(@D) AS [MONTH], DAY(@D) AS [DAY]
Source Code
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原文地址：https://www.cnblogs.com/createwell/p/14021120.html