How to transform rows to columns

Question

I have a simple problem when querying the SQL Server 2005 database. I have tables called Customer and Products (1->M). One customer has most 2 products. Instead of output as

Answer 1

As others have mentioned, SQL 2005 has the PIVOT function which is probably the best for general use. In some cases, however, you can simply do something like this.

Select 
 Customer,
 Sum(Case When Product = 'Foo' Then 1 Else 0 End) Foo_Count,
 Sum(Case When Product = 'Bar' Then 1 Else 0 End) Bar_Count
From Customers_Products
Group By Customer