Fetching Records Based on Condition

Question

hi all,
i am having some problem in getting the records from three tables.could anybody there to help me out of this.....
there are three tables SUB,TICKETS and INDTICKETS.
In the first table SUB(master table)which contains the masters.
In the second table TICKET(detail table) which contains the tickets belongs to the subscriber in the master(SUB)table.
So if we want to see the tickets(2 each) of one subscriber belongs to which routeid we can combine the 2 tables and get it since routeid is in the SUB master table.
Sometimes all tickets wouldnt belongs to the same routeid whatever specified in the SUB master.So i created the another INDTICKET table which will save the routeid ticketid wise.So the INDTICKET Table will contains tickets which are only having routeid is been changed.
DESC SUB
SUBNO SUBNAME ROUTEID
1 SMITH 01
2 SCOTT 02
DESC TICKETS
SUBNO TICKETID AMOUNT
1 01 1000
1 02 2000
2 09 4000
2 10 7000
DESC INDTICKET
SUBNO TICKETID ROUTEID
1 02 02
2 10 01
Now i need a query which will fetch only the tickets
1 . belongs to 01 routeid in the SUB master table and not in the INDTICKET table of other routeid
2 . and the ticketid belongs to the 01 routeid in the INDTICKET table.
So from the above example the query should fetch like this
=== Tickets in routeid '01' ===
SUBNO SUBNAME TICKETID AMOUNT
1 SMITH 01 1000
2 SCOTT 10 7000
thanks in advance
regrds,
punith

Answer 1

In the future, it would be much more helpful if you could post the DDL to create and populate these tables instead of DESC and query output. It would greatly increase the chances of having your question answered.
I would probably have put the routeid override as an additional column in the tickets table instead of creating a new table just for the override, but with your current layout:
sql>select * from sub;
    SUBNO SUBNAME                          ROUTEID
        1 Smith                                  1
        2 Scott                                  2
2 rows selected.
sql>select * from tickets;
    SUBNO  TICKETID    AMOUNT
        1         1      1000
        1         2      2000
        2         9      4000
        2        10      7000
4 rows selected.
sql>select * from indticket;
    SUBNO  TICKETID   ROUTEID
        1         2         2
        2        10         1
2 rows selected.
sql>select s.subno, s.subname, t.ticketid, t.amount
  2    from sub s, tickets t
  3   where s.routeid = 1
  4     and t.subno = s.subno
  5     and not exists (select null
  6                       from indticket it
  7                      where it.subno = s.subno
  8                        and it.ticketid = t.ticketid)
  9  union all
10  select s.subno, s.subname, it.ticketid, t.amount
11    from indticket it, sub s, tickets t
12   where it.routeid = 1
13     and s.subno = it.subno
14     and t.subno = s.subno
15     and t.ticketid = it.ticketid;                       
    SUBNO SUBNAME                         TICKETID    AMOUNT
        1 Smith                                  1      1000
        2 Scott                                 10      7000
2 rows selected.