SQL query that returns exclusive rows from groups

Question

I'm using modified scott/tiger data for this.
I've got two tables
DEPT_X
DEPTNO     DNAME             LOC     CODE_ID     SUB_DEPTNO
10     ACCOUNTING     NEW YORK 111     101
10     SALES             ATWN      111     102
10     SALES             BTWN      112     103
20     RESEARCH     DALLAS      111     201
20     RESEARCH     CTWN      111     202
30     SALES             CHICAGO      111     301
40     OPERATIONS     BOSTON      112     401and
BI_PD
CODE_ID     PD_TYPE     BI_TYPE
111          -1
112     -1     I want to write a query that joins the code_ids of the two tables and lists out either only the records from DEPT_X who's code_ids have a -1 in the PD_TYPE(112) column and none of the code_ids that have a -1 in the BI_TYPE(111) column for each department or if that department has code_ids for the BI_TYPE (111), list out those rows. So for Deptno 10 you'll only get the row with SUB_DEPTNO = 103. But if for that DEPTNO= 20 you'll get the rows for both SUB_DEPTNO = 201 and 202.
So the result should look like
DEPTNO   SUB_DEPTNO
10          103
20          201
20          202
30          301.
Basically I just want rows from each department that have code_ids = 111 not to show up if there are code_ids = 112.
What is the query to do this?
Message was edited by:
user623359
Message was edited by:
user623359
Message was edited by:
user623359
Message was edited by:
user623359
Message was edited by:
user623359

Answer 1

One way could be:
Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
SQL> with dept_x as (
  2      select 10 deptno, 'ACCOUNTING' dname, 'NEW YORK' loc, 111 code_id, 101 sub_deptno from dual
union all
  3      select 10, 'SALES', 'ATWN', 111, 102 from dual union all
  4      select 10, 'SALES', 'BTWN', 112, 103 from dual union all
  5      select 20, 'RESEARCH', 'DALLAS', 111, 201 from dual union all
  6      select 20, 'RESEARCH', 'CTWN', 111, 202 from dual union all
  7      select 30, 'SALES', 'CHICAGO', 111, 301 from dual union all
  8      select 40, 'OPERATIONS', 'BOSTON', 112, 401 from dual ),
  9  --
10  bi_pd as(
11      select 111 code_id, null pd_type, -1 bi_type from dual union all
12      select 112, -1, null from dual),
13  --
14  t as(
15      select a.deptno,a.sub_deptno from dept_x a, bi_pd b
16      where a.code_id = b.code_id and b.pd_type = -1)
17  --
18  select a.deptno,a.sub_deptno
19  from dept_x a, bi_pd b
20  where a.code_id = b.code_id and b.bi_type = -1 and 
21        (a.deptno) not in (select deptno from t)
22  union
23  select deptno,sub_deptno from t;
    DEPTNO SUB_DEPTNO
        10        103
        20        201
        20        202
        30        301
        40        401