In this article, I will try to give information about the function that makes the e-mail address compatible in SQL Server.

In SQL Server, in some cases, Turkish characters may be entered in the e-mail addresses or it may be necessary to correct the e-mail addresses before entering the e-mail addresses.

You can easily do this using the function below.

CREATE FUNCTION dbo.EPosta_Adresi_Duzelt (@EMAIL NVARCHAR(200))
RETURNS NVARCHAR(200)
AS
BEGIN
	DECLARE @TempString NVARCHAR(200)
	SET @TempString = @EMAIL
	IF NULLIF(@TempString, '') IS NOT NULL
	BEGIN
		IF @TempString LIKE '%@%'
		BEGIN
			SET @TempString = REPLACE(@TempString, ' ', '')
			SET @TempString = REPLACE(@TempString, 'Ü', 'u')
			SET @TempString = REPLACE(@TempString, 'ü', 'u')
			SET @TempString = REPLACE(@TempString, 'Ğ', 'g')
			SET @TempString = REPLACE(@TempString, 'ğ', 'g')
			SET @TempString = REPLACE(@TempString, 'Ç', 'c')
			SET @TempString = REPLACE(@TempString, 'ç', 'c')
			SET @TempString = REPLACE(@TempString, 'Ş', 's')
			SET @TempString = REPLACE(@TempString, 'ş', 's')
			SET @TempString = REPLACE(@TempString, 'İ', 'i')
			SET @TempString = REPLACE(@TempString, 'I', 'i')
			SET @TempString = REPLACE(@TempString, 'ı', 'i')
			SET @TempString = REPLACE(@TempString, 'Ö', 'o')
			SET @TempString = REPLACE(@TempString, 'ö', 'o')
			SET @TempString = LOWER(@TempString)
		END
		ELSE
		BEGIN
			SET @TempString = 'Geçersiz E-Mail Adresi';
		END
	END
	ELSE
	BEGIN
		SET @TempString = 'Boş E-Mail Adresi';
	END
	RETURN @TempString
END
GO

--Using the Function

SELECT
	dbo.EPosta_Adresi_Duzelt('Sqlservereğitimleri@sqlservereğitimleri.com')

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

As you can see, we have made the e-mail address compatible.

Good luck to everyone in business and life.

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