返回当月天数
1 CREATE function [dbo].[返回当月天数] 2 ( 3 @yearmonth varchar(6) --参数格式：年月 4 ) 5 returns int 6 as 7 begin 8 return (datediff(d,@yearmonth+'01',dateadd(mm,1,@yearmonth+'01'))) 9 end
1 CREATE function [dbo].[返回当月天数] 2 ( 3 @yearmonth varchar(6) --参数格式：年月 4 ) 5 returns int 6 as 7 begin 8 return (datediff(d,@yearmonth+'01',dateadd(mm,1,@yearmonth+'01'))) 9 end