Function Returning Month Name in SQL Server

Hello to everyone,

In this article, I will try to give information about the use of the month name function in SQL Server.

In SQL Server, in some cases, you may want to get the month name from the month number. There are other solutions to this, but let’s create our own function.

You can do this easily using the code below.

CREATE FUNCTION fnMonthInfoFunction
(
    @MonthNumber INT
)
RETURNS VARCHAR(10)
AS
BEGIN
    DECLARE @MonthName VARCHAR(10);
    SELECT @MonthName = CASE
                        WHEN @MonthNumber = 1 THEN
                            'January'
                        WHEN @MonthNumber = 2 THEN
                            'February'
                        WHEN @MonthNumber = 3 THEN
                            'March'
                        WHEN @MonthNumber = 4 THEN
                            'April'
                        WHEN @MonthNumber = 5 THEN
                            'May'
                        WHEN @MonthNumber = 6 THEN
                            'June'
                        WHEN @MonthNumber = 7 THEN
                            'July'
                        WHEN @MonthNumber = 8 THEN
                            'August'
                        WHEN @MonthNumber = 9 THEN
                            'September'
                        WHEN @MonthNumber = 10 THEN
                            'October'
                        WHEN @MonthNumber = 11 THEN
                            'November'
                        WHEN @MonthNumber = 12 THEN
                            'December'
                    END;
    RETURN @MonthName;
END;

--Kullanımı 

SELECT dbo.fnMonthInfoFunction(6) AS MonthNameInfo;
SELECT dbo.fnMonthInfoFunction(3) AS MonthNameInfo;
SELECT dbo.fnMonthInfoFunction(12) AS MonthNameInfo;

When you create the above function and run the code, you will see a result similar to the one below.

As you can see, when the month number is entered, the month name information is sent to us as a text.

Good luck to everyone in business and life.