@@ERROR in SQL SERVER

@@ERROR returns zero if the last executed statement did not throw an error, else it will return an error number.

The below shows a error message with error number when an Divide by Zero is encountered.

CREATE PROCEDURE ErrorNumber
AS
BEGIN
DECLARE @ErrorNumber varchar(20)
SELECT 1/0
SET @ErrorNumber = @@ERROR
PRINT 'Error Generated : ' + @ErrorNumber
END

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