Using GO TO in SQL

CREATE TABLE [dbo].[Employee](
	[First_Name] [varchar](50) NULL,
	[City] [varchar](50) NULL
)

 INSERT Employee (First_Name, City)
 VALUES('Ashu' , 'Delhi')

DECLARE @FName varchar(50)
DECLARE @CName varchar(50)
 SET @FName = 'Ashu'
 SET @CName = 'Delhi'
 IF EXISTS (SELECT First_Name FROM Employee WHERE First_Name = @FName)
 BEGIN
    GOTO DuplicateInsert
 END
 INSERT Employee (First_Name, City)
 VALUES(@FName , @CName)
 DuplicateInsert:
 PRINT @FName + ' Already Exists In Employee Table'