Using COALESCE function to make values separated with commas

Question

I have a table (EMP) I know that using the COALESCE function we can get the values of any column in this way

23,23,45,34

SELECT          


        

Answer 1

Isnull Function will also give us the same result

DECLARE @List VARCHAR(8000)

SELECT @List = ISNULL(@List + ',', '') + CAST(OfferID AS VARCHAR)
FROM   Emp
WHERE  EmpID = 23

SELECT @List