Question

I have an SQL query that currently displays all the people in table HOTEL that booked a hotel between $260 and $350. I’m using ORACLE

SELECT guest.guest_name "GUEST NAME", 
       Count(guest.guest_no), 
       guest.guest_no   "GUEST           NUMBER", 
       room.r_price     "ROOM PRICE" 
FROM   room, 
       guest, 
       booking 
WHERE  r_price >= 260 
       AND r_price <= 350 
       AND guest.guest_no = booking.guest_no 
GROUP  BY guest.guest_no, 
       guest.guest_name, 
       room.room_price 
ORDER  BY guest.guest_name; 

I thought that I could group by just GUEST.GUEST_NAME (so it puts all of the count under the one name rather than doubling up on the guest names).

EDIT: The current results of the query look like this:

    GUEST NAME    COUNT   GUEST_NO R_PRICE
    Jenny Freeman   2   G003    260
    Jenny Freeman   2   G003    295
    Jenny Freeman   2   G003    310
    Martin Ferguson 3   G006    260
    Martin Ferguson 3   G006    295
    Martin Ferguson 3   G006    310
    Paul Happy  3   G002    260
    Paul Happy  3   G002    295
    Paul Happy  3   G002    310
    Steve Kirkwood  3   G005    260
    Steve Kirkwood  3   G005    295
    Steve Kirkwood  3   G005    310
    Tina Duncan 2   G001    260
    Tina Duncan 2   G001    295
    Tina Duncan 2   G001    310
    Vanessa Horton  1   G007    260
    Vanessa Horton  1   G007    295
    Vanessa Horton  1   G007    310

But I’m expecting something like this:

    GUEST NAME    COUNT   GUEST_NO R_PRICE
    Jenny Freeman   6   G003    260
    Martin Ferguson 9   G006    310
    Paul Happy  9   G002    310
    Steve Kirkwood  9   G005    260
    Tina Duncan 6   G001    310
    Vanessa Horton  3   G007    260

Answer 1

Well, I think you just have to change in group by statement rest looks OK to me. Just don’t include Room price in Group By statement, i think that is creating problem for you if i am getting your question right…

 GROUP BY GUEST.GUEST_NO,
          GUEST.GUEST_NAME

and

 MAX(R_PRICE)