Sql datediff month

CREATE FUNCTION FullMonthsSeparation 
(
    @DateA DATETIME,
    @DateB DATETIME
)
RETURNS INT
AS
BEGIN
    DECLARE @Result INT

    DECLARE @DateX DATETIME
    DECLARE @DateY DATETIME

    IF(@DateA < @DateB)
    BEGIN
        SET @DateX = @DateA
        SET @DateY = @DateB
    END
    ELSE
    BEGIN
        SET @DateX = @DateB
        SET @DateY = @DateA
    END

    SET @Result = (
                    SELECT 
                    CASE 
                        WHEN DATEPART(DAY, @DateX) > DATEPART(DAY, @DateY)
                        THEN DATEDIFF(MONTH, @DateX, @DateY) - 1
                        ELSE DATEDIFF(MONTH, @DateX, @DateY)
                    END
                    )

    RETURN @Result
END
GO

SELECT dbo.FullMonthsSeparation('2009-04-16', '2009-05-15') as MonthSep -- =0
SELECT dbo.FullMonthsSeparation('2009-04-16', '2009-05-16') as MonthSep -- =1
SELECT dbo.FullMonthsSeparation('2009-04-16', '2009-06-16') as MonthSep -- =2

Source: stackoverflow.com

Similar codes

0 vote181 views1 answer
Select in select sql
SQL
2 votes229 views4 answers
Mysql select into new table
SQL
0 vote181 views1 answer
Make a socket server to detect changes in mysql
SQL
0 vote286 views1 answer
SQL query to verify the size of the table
SQL
2 votes217 views2 answers
Python escape string for sql
SQL
0 vote266 views1 answer
Last date for each user sql
SQL
0 vote184 views1 answer
Oracle sql developer closed connection
SQL
1 vote285 views1 answer
Mysql is odd
SQL
2 votes243 views4 answers
List databases in sql server
SQL
3 votes187 views4 answers
Show databases in sql server
SQL