Create view...very very difficult....

Question

I have this view:
CREATE OR REPLACE VIEW ANAGR ( SITE_ID,
COD_ID, NOP, ADDRESS, PROP) AS
SELECT SITE.SITE_ID, COD_IMM.COD_ID,
'AA',
SITE.ADDRESS1, LS.PROPRIETA
FROM LS, COD_IMM, SITE, RM, DP
WHERE RM.LS_ID = COD_IMM.LS_ID
AND SITE.SITE_ID = COD_IMM.SITE_ID
AND LS.LS_ID = RM.LS_ID
AND SITE.SITE_ID = RM.SITE_ID
AND RM.DV_ID = DP.DV_ID
AND RM.DP_ID = DP.DP_ID
AND (DP.FLAG_GR='2' OR
(DP.FLAG_GR='1' AND COD_IMM.ADMIN IN ('AAAA','TTTT')))
GROUP BY SITE.SITE_ID, COD_IMM.COD_ID,
'AA',
SITE.ADDRESS1,
LS.PROPRIETA
TABLE cod_imm is create every night with a stored procedure:
(INSERT INTO COD_IMM (COD_ID,LS_ID,BL_ID,SITE_ID,ADMIN)
                         SELECT BL.COD_CONV_BL||'-'||RM.LS_ID COD_ID ,RM.LS_ID,RM.BL_ID,RM.SITE_ID, BL.AMMINISTRATORE
                         FROM RM,BL
                         WHERE RM.BL_ID=BL.BL_ID
                         AND BL.COD_CONV_BL IS NOT NULL
                         AND RM.SITE_ID IS NOT NULL
                         AND RM.LS_ID IS NOT NULL
                         GROUP BY BL.COD_CONV_BL,RM.LS_ID,RM.BL_ID,RM.SITE_ID, BL.AMMINISTRATORE;
                         COMMIT;
COD_ID...........LS_ID........BL_ID.......SITE_ID.......ADMIN
A00-0-000001.....000001........000022......000002........AAAA
A00-1-000001.....000001........000023......000002........AAAA
A00-2-000001.....000001........000024......000002........AAAA
A00-3-000001.....000001........000025......000002........AAAA
B00-0-123456.....123456........123111......000009........AAAA
B00-1-123456.....123456........123112......000009........AAAA
S00-0-567890.....567890........222222......567890........AAAA
T01-0-567888.....567888........222233......567890........AAAA
T01-1-567888.....567888........222234......567890........AAAA
R01-0-111111.....111111........000003......999999........AAAA
R01-1-111111.....111111........000004......999999........AAAA
R01-2-111111.....111111........000008......999999........AAAA
Z01-0-333333.....333333........333333......333333........AAAA
the cod xxx-y is a autoincrement for each bl_id
TABLE SITE:
SITE_ID PRIMARY KEY
TABLE LS
LS_ID PRIMARY KEY
TABLE DP:
DV_ID PRIMARY KEY
DV_ID
COR
DOM
TEM
FEN
ALA
ALB
ACE
TABLE RM (25000 RECORDS):
RM_ID PRIMARY KEY
BL_ID FK ON BL
SITE_ID FK ON SITE
LS_ID FK ON LS
DV_ID FK ON DP
RM_ID......BL_ID.......SITE_ID.........LS_ID.......DV_ID
0001.......000022.......000002.........000001.......COR
0002.......000023.......000002.........000001.......DOM
0003.......000024.......000002.........000001.......INT
0004.......000025.......000002.........000001.......TEM
0009.......123111.......000009.........123456.......COR
0010.......123112.......000009.........123456.......FEN
0020.......123113.......000009.........123456.......DOM
0031.......222222.......567890.........567890.......TEM
0035.......222233.......567888.........567888.......TEM
0036.......222234.......567888.........567888.......FEN
0037.......000003.......999999.........111111.......ALB
0038.......000004.......999999.........111111.......ACE
0042.......000008.......999999.........111111.......ALA
0055.......333333.......333333.........333333.......FEN
in my view I have these values:
COD_ID...........SITE_ID...NOP.....ADDRESS.....PROP
A00-0-000001.....000002....AA......SSSSSS.......XX
A00-1-000001.....000002....AA......NNNNNN.......XX
A00-2-000001.....000002....AA......CCCCCC.......YY
A00-3-000001.....000002....AA......CVVVVV.......DD
B00-0-123456.....000009....AA......RRRRRR.......XX
B00-1-123456.....000009....AA......RRRRRR.......XX
S00-0-567890.....567890....AA......RRRRRR.......XX
T01-0-567888.....567890....AA......RRRRRR.......VV
T01-1-567888.....567890....AA......RRRRRR.......BB
R01-0-111111.....999999....AA......RRRRRR.......XX
R01-1-111111.....999999....AA......FFFFFF.......XX
R01-2-111111.....999999....AA......RRRRRR.......XX
Z01-0-333333.....333333....AA......RRRRRR.......XX
BUT I'D LIKE TO GET THESE VALUES:
COD_ID...........SITE_ID...NOP.....ADDRESS.....PROP
A00-0-000001.....000002....EMS......SSSSSS.......XX
A00-1-000001.....000002....EMS......NNNNNN.......XX
A00-2-000001.....000002....EMS......CCCCCC.......YY
A00-3-000001.....000002....EMS......CVVVVV.......DD
B00-0-123456.....000009....EMS......RRRRRR.......XX
B00-1-123456.....000009....EMS......RRRRRR.......XX
S00-0-567890.....567890....TIM......RRRRRR.......XX
T01-0-567888.....567890....FIN......RRRRRR.......VV
T01-1-567888.....567890....FIN......RRRRRR.......BB
R01-0-111111.....999999....EMS......RRRRRR.......XX
R01-1-111111.....999999....EMS......FFFFFF.......XX
R01-2-111111.....999999....EMS......RRRRRR.......XX
Z01-0-333333.....333333....FIN......RRRRRR.......XX
I'd like to get these values in col NOP:
- IF cod_id has DV_ID <> 'FEN' AND DV_ID <> 'TEM' THEN NOP='EMS' (111111)
- IF cod_id has just DV_ID=FEN THEN NOP='FIN' (333333)
- IF cod_id has just DV_ID='TEM' then NOP='TIM' (567890)
- if cod_id has DV_ID='TEM' or DV_ID='FEN' or DV_ID in ('FEN','TEM') but in this cod_id
exists at least an other DV_ID <> from 'FEN' and 'TEM' then NOP='EMS' (000001), (123456)
- if cod_id has just DV_ID='TEM' and DV_ID='FEN' then NOP='FIN' (567888)
I tried with this code but it doesn't run correctly:
CREATE OR REPLACE VIEW ANAGR ( SITE_ID,
COD_ID, NOP, ADDRESS, PROP) AS
SELECT SITE.SITE_ID, COD_IMM.COD_ID,
case when DP.dv_id <> 'FEN' and DP.dv_id <> 'TEM' then 'EMS'
               WHEN DP.dv_id = 'TEM' AND COUNT(DISTINCT DP.dv_id)=1 then 'TIM'
               WHEN DP.dv_id = 'FEN' AND COUNT(DISTINCT DP.dv_id)=1 then 'FIN'
               WHEN DP.dv_id = 'FEN' and DP.dv_id = 'TEM' THEN 'FIN'
               WHEN DP.dv_id = 'FEN' OR DP.dv_id = 'TEM' AND COUNT(DISTINCT DP.dv_id)> 1 THEN 'EMS'
                    ELSE 'EMS' END,
SITE.ADDRESS1, LS.PROPRIETA
FROM LS, COD_IMM, SITE, RM, DP
WHERE RM.LS_ID = COD_IMM.LS_ID
AND SITE.SITE_ID = COD_IMM.SITE_ID
AND LS.LS_ID = RM.LS_ID
AND SITE.SITE_ID = RM.SITE_ID
AND RM.DV_ID = DP.DV_ID
AND RM.DP_ID = DP.DP_ID
AND (DP.FLAG_GR='2' OR
(DP.FLAG_GR='1' AND COD_IMM.ADMIN IN ('AAAA','TTTT')))
GROUP BY SITE.SITE_ID, COD_IMM.COD_ID,
dp.dv_id,
SITE.ADDRESS1,     
LS.PROPRIETA
Create this view is very difficult for me....
Could you help me?
Thank you very much!!!

Answer 1

You've posted something like this before haven't you. To be honest it seems a bit like gibberish to me, but then we all understand our own system's business requirements best.
Given that I'm not quite sure what it is you want, I think some variation on what I show below may or may not be what you're looking for.
Good luck, APC
SQL> CREATE TABLE g1 (cod number, dv_id VARCHAR2(3))
  2  /
Table created.
SQL> INSERT INTO g1 VALUES (1, 'APC')
  2  /
1 row created.
SQL> INSERT INTO g1 VALUES (2, 'FEN')
  2  /
1 row created.
SQL> INSERT INTO g1 VALUES (3, 'TEM')
  2  /
1 row created.
SQL> INSERT INTO g1 VALUES (4, 'APC')
  2  /
1 row created.
SQL> INSERT INTO g1 VALUES (4, 'FEN')
  2  /
1 row created.
SQL> INSERT INTO g1 VALUES (5, 'APC')
  2  /
1 row created.
SQL> INSERT INTO g1 VALUES (5, 'TEM')
  2  /
1 row created.
SQL> INSERT INTO g1 VALUES (6, 'TEM')
  2  /
1 row created.
SQL> INSERT INTO g1 VALUES (6, 'FEN')
  2  /
1 row created.
SQL>
SQL> CREATE OR REPLACE VIEW v1 AS
  2  SELECT cod, sum(decode(dv_id, 'FEN', 1, 'TEM', 2, 4)) AS r
  3  FROM   g1
  4  GROUP  BY cod
  5  /
View created.
SQL>
SQL> SELECT g1.cod, g1.dv_id, decode(v1.r, 4, 'EMS'
  2                                      , 1, 'FIN'
  3                                      , 2, 'TIM'
  4                                      , 5, 'EMS'
  5                                      , 6, 'EMS'
  6                                      , 3, 'FIN'
  7                                      , 'DEF' ) AS nop
  8  FROM   v1, g1
  9  WHERE  g1.cod = v1.cod
10  /
       COD DV_ NOP
         1 APC EMS
         2 FEN FIN
         3 TEM TIM
         4 APC EMS
         4 FEN EMS
         5 APC EMS
         5 TEM EMS
         6 TEM FIN
         6 FEN FIN
9 rows selected.
SQL>