How to pivot in SQL

Question

I am not sure if this would be called pivoting.

Data in my SQL 2005 table [CustromerRoles] is as such:

CustId  RoleId
2        4
2           


        

Answer 1

Try this:

SELECT 
    CustId, 
    SUM(ISNULL(Admin,0)) AS Admin, 
    SUM(ISNULL(Manager,0)) AS Manager, 
    SUM(ISNULL(Support,0)) AS Support, 
    SUM(ISNULL(Assistant,0)) AS Assistant
FROM
(
    SELECT cr.CustId, cr.RoleId, Role, 1 AS a
    FROM CustromerRoles cr
    INNER JOIN Roles r ON cr.RoleId = r.RoleId
) up
PIVOT (MAX(a) FOR Role IN (Admin, Manager, Support, Assistant)) AS pvt
GROUP BY CustId

Tested. It gives the same result you want.