判断指定年份是否为闰年

判断指定年份是否为闰年,Insus.NET也曾经写过2篇《判断是否是闰年https://www.cnblogs.com/insus/p/10865051.html

指定日期,判断其所属年份是否为闰年https://www.cnblogs.com/insus/p/10841868.html

 

 

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:      Insus.NET
-- Create date: 2019-07-01
-- Update date: 2019-07-01
-- Description: 指定年份是否为闰年
-- =============================================

CREATE FUNCTION [dbo].[svf_IsLeapYear] ( 
    @Year SMALLINT 
)
RETURNS BIT
AS
BEGIN
  DECLARE @rtv BIT = 0  

   IF (@Year >= YEAR([dbo].[svf_LowDate]()) AND @Year <= YEAR([dbo].[svf_HighDate]()))
   AND ((@Year % 4 = 0 AND @Year % 100 != 0) OR @Year % 400 = 0)
        SET @rtv = 1

    RETURN @rtv
END
GO
Source Code

 

上面函数中,还有另外2个自定义函数,可以参考这篇《MS SQL获取最大值或最小值日期的函数 https://www.cnblogs.com/insus/archive/2011/06/24/2088857.html

 MS SQL 最小年份为1753和最大年份为9999。

posted @ 2019-07-01 09:23 Insus.NET 阅读(...) 评论(...) 编辑 收藏