Calculate fiscal year in SQL Server

Question

How would you calculate the fiscal year from a date field in a view in SQL Server?

Answer 1

Here's my version which returns fiscal year as FYyyyy - fiscal year begins 7/1

i.e. 6/1/2015 -> FY1415, 7/1/2015 -> FY1516

String functions could be better...

        CREATE FUNCTION [dbo].[FY](@DATE DATETIME)
        RETURNS char(6)
        AS
        BEGIN
            DECLARE @Answer     char(6)
            SET @Answer =    
            CASE WHEN MONTH(@DATE) < 7 
                 THEN 'FY' + RIGHT(CAST(YEAR(@DATE) - 1 AS VARCHAR(11)), 2) + RIGHT(CAST(YEAR(@DATE) AS VARCHAR(11)), 2) 
                 ELSE 'FY' + RIGHT(CAST(YEAR(@DATE) AS VARCHAR(11)), 2) + RIGHT(CAST(YEAR(@DATE) + 1 AS VARCHAR(11)), 2) END
            RETURN @Answer
        END