Help with Pivot Table

Question

I'm trying to create an airplane seat map.  2 tables boarding and seats, boarding has the seat assignment (seatid) and seats has the id as well as row (eg 1) and position (eg A, B,C).  I'm trying to pivot the two together so I see which seat
is taken and which is open (1-taken, 0-open).  Result should look like this:
Row |A|B|C|
___1|1 0 1
___2|0 0 0
___3|0 0 0
___4|1 0 0
Using SQL server, run a below query get error "incorrect synatx near 'PIVOT'
SELECT *
FROM (SELECT s.row, s.position,
CASE when b.seatid is null
then 0
else 1
end seat_free
from seats s
left outer join 
boarding b 
on (b.seatid=s.id)
PIVOT (max (seat_free)
FOR position in ('A' as A, 'B' as B, 'C' as C))
Order by s.row
Thanks for the help!

Answer 1

Hi, 
in addition to pivot solutions posted by RSingh and Latheesh, you can use another solution without pivot:
select roww,MAX([A]) as [B],MAX([B]) as [A],MAX([C]) as [C]
from (
select roww ,
[A] = CASE
when position = 'A' and not ISNULL(boarding.seatid, '0') = '0' then 1
else 0
END,
[B] = CASE
when position = 'B' and not ISNULL(boarding.seatid, '0') = '0' then 1
else 0
END,
[C] = CASE
when position = 'C' and not ISNULL(boarding.seatid, '0') = '0' then 1
else 0
END
from seat
left join boarding on seat.id = boarding.seatid
) T
group by roww
Hope this is helpful :-)
[Personal Site] [Blog] [Facebook]