Query joining 3 tables

Question

I want to join 3 tables emp,dept,job
emp
cid pid dno div job open
1 1     10 A clerk     A
1 1     10 A manager     A
1 1     10 B manager     A
1 1     20 A salesman     A
1 1     30 C clerk     A
dept
cid pid dno div
1 1     10 A
1 1     10 B
1 1     20 A
1 1     20 B
1 1     30 C
jobtab
job      sal
clerk          100
manager          500
salesman      200
My required result is :
Result
cid pid dno div job     sal
1 1     10 A clerk 100
1 1     10 A manager 500
1 1     10 B manager 500
1 1     20 A salesman 200
1 1     20 B
1 1     30 C
My query is something like this :
select cid,pid,dno,div,job,sal
from emp e, dept d, jobtab j
where
(d.dno=e.dno and d.div=e.div)
and e.cid=d.cid
and e.pid=d.pid
and j.job=e.job
and e.open='A'
This query is not fully right. I need to use apprpriate join to get the records in dept table even if there is
no match in emp eg. the 20B and 30C rows.
Please modify the query to give the right one.

Answer 1

SQL> with emp as(
  2  select 1 as cid,1 as pid,10 as dno,'A' as div,'clerk' as job,'A' as open from dual
  3  union select 1,1,10,'A','manager','A' from dual
  4  union select 1,1,10,'B','manager','A' from dual
  5  union select 1,1,20,'A','salesman','A' from dual
  6  union select 1,1,30,'C','clerk','A' from dual),
  7  dept as(
  8  select 1 as cid,1 as pid,10 as dno,'A' as div from dual
  9  union select 1,1,10,'B' from dual
10  union select 1,1,20,'A' from dual
11  union select 1,1,20,'B' from dual
12  union select 1,1,30,'C' from dual),
13  jobtab as(
14  select 'clerk' as job,100 as sal from dual
15  union select 'manager',500 from dual
16  union select 'salesman',200 from dual)
17  select nvl(a.cid,b.cid),nvl(a.pid,b.pid),nvl(a.dno,b.dno),nvl(a.div,b.div),c.job,c.sal
18    from emp a full join dept b
19      on a.cid = b.cid and a.pid =b.pid and a.dno = b.dno and a.div = b.div
20    Left join jobtab c
21      on a.job = c.job and (a.dno,a.div) not in((20,'B'),(30,'C'))
22  order by 5,4;
NVL(A.CID,B.CID)  NVL(A.PID,B.PID)  NVL(A.DNO,B.DNO)  N  JOB             SAL
               1                 1                10  A  clerk           100
               1                 1                10  A  manager         500
               1                 1                10  B  manager         500
               1                 1                20  A  salesman        200
               1                 1                20  B  null      null
               1                 1                30  C  null      nullMessage was edited by:
Aketi Jyuuzou