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

Description

dknaack solution has some drawbacks when text contains some XML caracters like <, which are html-entitized as <. This can be solved using the TYPE directive which sends the response as xml, then extract the raw value as string.

There are plenty more solutions to the problem in this article : Concatenating Row Values in T-SQL

Sample

SELECT STUFF((
    select ','+ cast(OfferID as nvarchar(255)) 
    from Emp b
    WHERE a.EmpID= b.EmpID
    FOR XML PATH(''), TYPE
    ).value('.', 'varchar(max)')
    ,1,1,'') AS COLUMN2
FROM Emp a
GROUP BY a.EmpID