BEGIN AND END INSIDE TRY BLOCK

First of all you can implement this without the BEGIN TRY\ END TRY blocks.. I dont get what is meant by (CHECK IF VALUES EXISTS) ?

IF EXISTS , should have some subquery to test..otherwise EXISTS the following code block works

DECLARE @C INT=10
BEGIN TRY
        IF @C='FF'
                BEGIN
                        PRINT 'RIGHT'
                END
        
END TRY
BEGIN CATCH
PRINT 'VALUE IS DIFFERENT'
END CATCH

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Thanks, hsbal