Pivoting Data Works In One Db But Not Another

In the following code examples I got to learn PIVOT, I found an error for SUM. However when this is ran against the AdventureWorks db it works fine. Notice it is using a table variable and not an actual table. What do I need to do to my db to get this to work?

Thanks!




declare @sales table
(
[Year] int,
Quarter char(2),
Amount float
)

insert into @sales values(2001, 'Q1', 70)
insert into @sales values(2001, 'Q1', 150)
insert into @sales values(2002, 'Q1', 20)
insert into @sales values(2001, 'Q2', 15)
insert into @sales values(2002, 'Q2', 25)
insert into @sales values(2001, 'Q3', 50)
insert into @sales values(2002, 'Q3', 20)
insert into @sales values(2001, 'Q4', 90)
insert into @sales values(2001, 'Q4', 80)
insert into @sales values(2002, 'Q4', 35)

select * from @sales
PIVOT (
SUM(Amount)
for Quarter in (Q1, Q2, Q3, Q4)) as p

Yields...
Incorrect syntax near 'SUM'.