Comma separated values in one column - SQL SERVER

Question

Customer Table
--------------
ID   Name
1   James
2   Peter

Order Table
---------------
OrderId  CustId
100     1
101     1
102     2

How can I w

Answer 1

Adding full details from Sheikh Haris' link.

Given this table:

To get output like:

Use the following SQL:

SELECT field1,
    Substring(convert(varchar(100),
    (
    SELECT (', ' + field2)
        FROM #test t2
        WHERE t1.field1 = t2.field1
        ORDER BY field1, field2
    FOR XML PATH( '' )
                    )), 3, 1000 )
FROM #test t1
GROUP BY field1

I added a convert function to the substring so that the WIDEMEMO field would be displayed (SQL Server)