Concat field value to string in SQL Server

Question

I need a similar function to Oracle WM_CONCAT in SQL Server, which returns a comma separated list of whatever field you pass it as argument. For example, in Ora

Answer 1

The actual answer:

SELECT
   SUBSTRING(buzz, 2, 2000000000)
FROM
    (
    SELECT 
        firstname
    FROM 
        employee
    WHERE
        State = 'CA'
    FOR XML PATH (',')
    ) fizz(buzz)

A common question here. Some searches:

• FOR XML PATH

• concat rows csv [sql-server]