Possible Duplicate:
Simulating group_concat MySQL function in MS SQL Server 2005?
The following is my employees table
EmployeeId BossId Name
======================================
1 5 John
2 5 Jane
3 4 Smith
4 4 Marie
And I want to get the following output
BossId Employees
====================
5 John, Jane
4 Smith, Marie
How can we do this in one group by query?