Question

How to write this hierarchical request

Asked by: AYEB

I have a table cop_tab ( col 1 char(1),  col2 char(1), col3 char(1) , col4 char (1) );
on this table i insert
( 'A','B','B','B')
( 'A',A','A','A')
( 'A','B','C','C')
( 'A','B','D','D)
( 'A','B','C','D')
( 'A','B','D','E')
( 'A','B','C','E')

The rule  is
Level 1 if we have  A A  . .  
Level 2 if we have  A B B
Level 3 i fwe have  A B  C C
Level 3 if we have A  B  D  D
Level 4 if all columns are differents ( A B C D  or A B C E etc ...)

I would obtain :
Level  col1 col2 col3 col4
1         A      A     A   A
2         A       B     B    B
3         A       B     C    C
4         A       B     C    D
4         A       B     C    E
3         A       B     D    D
4         A       B     D    E

I know we should use the connect by but i dont know how

Thank a lot for your help

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Asked On
2008-11-20 at 07:04:38ID23921683
Tags

SQL

Topics

Oracle Database

,

Oracle 9.x

Participating Experts
2
Points
350
Comments
10

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Answers

 

by: sdstuberPosted on 2008-11-20 at 07:13:57ID: 23004434

try this...

if you have more columns, just expand the decode and the connect by level limit

  SELECT (SELECT COUNT(DISTINCT DECODE(
                                    n,
                                    1,
                                    col1,
                                    2,
                                    col2,
                                    3,
                                    col3,
                                    4,
                                    col4
                                ))
            FROM (    SELECT LEVEL n
                        FROM DUAL
                  CONNECT BY LEVEL <= 4))
             diffcnt, ct.*
    FROM cop_tab ct
ORDER BY 1

                                              
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:

Select allOpen in new window

 

by: AYEBPosted on 2008-11-20 at 08:32:30ID: 23005234

Thanks sdstuber that is grate but if i add a row 'B','B','B','B' and i run your request i have this :

diffcnt      col1      col2      col3      col4
1      A      A      A      A
1      B      B      B      B
2      A      B      B      B
3      A      B      C      C
3      A      B      D      D
4      A      B      C      D
4      A      B      D      E
4      A      B      C      E

and it should be:
diffcnt      col1      col2      col3      col4
1      A      A      A      A
2      A      B      B      B
3      A      B      C      C
4      A      B      C      D
4      A      B      C      E
3      A      B      D      D
4      A      B      D      E
1      B      B      B      B


 

by: sdstuberPosted on 2008-11-20 at 08:34:03ID: 23005257

change the order by clause.


looks like you want to orcer by col1,col2,col3,col4

so...

SELECT (SELECT COUNT(DISTINCT DECODE(
                                    n,
                                    1,
                                    col1,
                                    2,
                                    col2,
                                    3,
                                    col3,
                                    4,
                                    col4
                                ))
            FROM (    SELECT LEVEL n
                        FROM DUAL
                  CONNECT BY LEVEL <= 4))
             diffcnt, ct.*
    FROM cop_tab ct
ORDER BY col1,col2,col3,col4
                                              
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:

Select allOpen in new window

 

by: sdstuberPosted on 2008-11-20 at 08:35:46ID: 23005279

If you want to sort based on the order in which you insert the data, you can't.  Relational databases don't work that way.

You would have to create a sequence column in your table to enforce that.

 

by: SJT2003APosted on 2008-11-20 at 10:14:06ID: 23006478

Your provided example and rule does not necessarily sound a parent-children leveled SELECT.

If it is not in parent and children level/order, as I see it, it would be very simple using a simple ORDER BY clause in the SELECT statement.
SELECT col1, col2, col3, col4 FROM yourtable
ORDER BY col1, col2, col3, col4 ASC

Taking the columns from right to left, the leading one would be driver for the trailing ones.

Post your reply if I am mistaken and you want the result in parent and child leveled row output.
That can be achieved by START WITH and CONNECT BY clause.

Check it out.
Good luck :)

 

by: AYEBPosted on 2008-11-21 at 07:58:35ID: 23014034

Thanks A lot for all of you,
That is write but my client complicate a little bit more his request.
what he has in his table is not A,B,C,D, .... but a tree which is like this:
RULE:
if col1 and col2 are equal that is an entity
if col2 and col3 are equal that is a devision
if col3 and col4 are equal that is a resp_gestion
if all col1,col2,col3,col4 are different thet is a departement
he needs to order them by entity, devision , resp_gestion, departement ( not alphabetical ) but parent children
like this:
niveau      entite      division      resp_gestion      departement
1      enti1      enti1      enti1      enti1
2      enti1      div1      div1      div1
3      enti1      div1      resp1      resp1
4      enti1      div1      resp1      dept1
4      enti1      div1      resp1      dept3
3      enti1      div1      resp2      resp2
4      enti1      div1      resp2      dep1
2      enti1      div2      div2      div2
4      enti1      div2      resp2      depart4
4      enti1      div3      resp3      depart4
2      enti2      div2      div2      div2
4      enti2      div2      resp2      depart2
3      enti2      div2      resp3      resp3
4      enti2      div2      resp3      dept4
2      enti3      div3      div3      div3

Here Some examples of requesting the table:
SELECT ent.entite, ent.division, ent.resp_gestion, ent.departement
  FROM tcg_cop_organisation ent
 WHERE ent.division = ent.entite

ENTITE      DIVISION      RESP_GESTION      DEPARTEMENT
enti1      enti1      enti1      enti1


SELECT div.entite, div.division, div.resp_gestion, div.departement
  FROM tcg_cop_organisation div
 WHERE div.division <> div.entite
   AND div.resp_gestion = div.division
 
ENTITE      DIVISION      RESP_GESTION      DEPARTEMENT
enti1      div1      div1      div1
enti1      div2      div2      div2
enti2      div2      div2      div2
enti3      div3      div3      div3

SELECT res.entite, res.division, res.resp_gestion, res.departement
  FROM tcg_cop_organisation res
 WHERE res.division <> res.entite
   AND res.resp_gestion <> res.division
   AND res.departement = res.resp_gestion

ENTITE      DIVISION      RESP_GESTION      DEPARTEMENT
enti1      div1      resp1      resp1
enti1      div1      resp2      resp2
enti2      div2      resp3      resp3
13335      19514      1401      1401

SELECT dep.entite, dep.division, dep.resp_gestion, dep.departement
  FROM tcg_cop_organisation dep
 WHERE dep.division <> dep.entite
   AND dep.resp_gestion <> dep.division
   AND dep.departement <> dep.resp_gestion

ENTITE      DIVISION      RESP_GESTION      DEPARTEMENT
enti2      div2      resp2      depart2
enti1      div2      resp2      depart4
enti1      div3      resp3      depart4
enti1      div1      resp2      dep1
enti1      div1      resp1      dept3
enti2      div2      resp3      dept4
enti1      div1      resp1      dept1

 

by: sdstuberPosted on 2008-11-21 at 09:19:59ID: 23015006

this seems like a new question

 

by: sdstuberPosted on 2008-11-21 at 09:27:42ID: 23015107

please close this question and open a new one providing inputs of your col1,col2,col3, col4 table
and expected outputs.

 

by: AYEBPosted on 2008-11-21 at 09:35:14ID: 23015174

This is a very bad solution we found:
/* Formatted on 2008/11/21 18:25 (Formatter Plus v4.8.8) */
SELECT   entite, division, resp_gestion, departement,niveau
    FROM ((SELECT entite, division, resp_gestion, departement,
                  ROWNUM numlgent, 0 numlgdiv, 0 numlgres, 0 numlgdep,
                  1 niveau
             FROM (SELECT   ent.entite, ent.division, ent.resp_gestion,
                            ent.departement
                       FROM tcg_cop_organisation ent
                      WHERE ent.division = ent.entite
                   ORDER BY ent.entite,
                            ent.division,
                            ent.resp_gestion,
                            ent.departement))
          UNION
          (SELECT v1.entite, v1.division, v1.resp_gestion, v1.departement,
                  v2.numlgent, ROWNUM numlgdiv, 0 numlgres, 0 numlgdep,
                  2 niveau
             FROM (SELECT   div.entite, div.division, div.resp_gestion,
                            div.departement
                       FROM tcg_cop_organisation div
                      WHERE div.division <> div.entite
                        AND div.resp_gestion = div.division
                   ORDER BY div.entite,
                            div.division,
                            div.resp_gestion,
                            div.departement) v1,
                  (SELECT entite, division, resp_gestion, departement,
                          ROWNUM numlgent
                     FROM (SELECT   ent.entite, ent.division,
                                    ent.resp_gestion, ent.departement
                               FROM tcg_cop_organisation ent
                              WHERE ent.division = ent.entite
                           ORDER BY ent.entite,
                                    ent.division,
                                    ent.resp_gestion,
                                    ent.departement)) v2
            WHERE v1.entite = v2.entite)
          UNION
          (SELECT v3.entite, v3.division, v3.resp_gestion, v3.departement,
                  v4.numlgent, v4.numlgdiv, ROWNUM numlgres, 0 numlgdep,
                  3 niveau
             FROM (SELECT   res.entite, res.division, res.resp_gestion,
                            res.departement
                       FROM tcg_cop_organisation res
                      WHERE res.division <> res.entite
                        AND res.resp_gestion <> res.division
                        AND res.departement = res.resp_gestion
                   ORDER BY res.entite,
                            res.division,
                            res.resp_gestion,
                            res.departement) v3,
                  (SELECT v1.entite, v1.division, v1.resp_gestion,
                          v1.departement, v2.numlgent, ROWNUM numlgdiv
                     FROM (SELECT   div.entite, div.division,
                                    div.resp_gestion, div.departement
                               FROM tcg_cop_organisation div
                              WHERE div.division <> div.entite
                                AND div.resp_gestion = div.division
                           ORDER BY div.entite,
                                    div.division,
                                    div.resp_gestion,
                                    div.departement) v1,
                          (SELECT entite, division, resp_gestion, departement,
                                  ROWNUM numlgent
                             FROM (SELECT   ent.entite, ent.division,
                                            ent.resp_gestion, ent.departement
                                       FROM tcg_cop_organisation ent
                                      WHERE ent.division = ent.entite
                                   ORDER BY ent.entite,
                                            ent.division,
                                            ent.resp_gestion,
                                            ent.departement)) v2
                    WHERE v1.entite = v2.entite) v4
            WHERE v3.entite = v4.entite AND v3.division = v4.division)
          UNION
          (SELECT v5.entite, v5.division, v5.resp_gestion, v5.departement,
                  v6.numlgent, v6.numlgdiv, v6.numlgres, ROWNUM numlgdep,
                  4 niveau
             FROM (SELECT   dep.entite, dep.division, dep.resp_gestion,
                            dep.departement
                       FROM tcg_cop_organisation dep
                      WHERE dep.division <> dep.entite
                        AND dep.resp_gestion <> dep.division
                        AND dep.departement <> dep.resp_gestion
                   ORDER BY dep.entite,
                            dep.division,
                            dep.resp_gestion,
                            dep.departement) v5,
                  (SELECT v3.entite, v3.division, v3.resp_gestion,
                          v3.departement, v4.numlgent, v4.numlgdiv,
                          ROWNUM numlgres
                     FROM (SELECT   res.entite, res.division,
                                    res.resp_gestion, res.departement
                               FROM tcg_cop_organisation res
                              WHERE res.division <> res.entite
                                AND res.resp_gestion <> res.division
                                AND res.departement = res.resp_gestion
                           ORDER BY res.entite,
                                    res.division,
                                    res.resp_gestion,
                                    res.departement) v3,
                          (SELECT v1.entite, v1.division, v1.resp_gestion,
                                  v1.departement, v2.numlgent,
                                  ROWNUM numlgdiv
                             FROM (SELECT   div.entite, div.division,
                                            div.resp_gestion, div.departement
                                       FROM tcg_cop_organisation div
                                      WHERE div.division <> div.entite
                                        AND div.resp_gestion = div.division
                                   ORDER BY div.entite,
                                            div.division,
                                            div.resp_gestion,
                                            div.departement) v1,
                                  (SELECT entite, division, resp_gestion,
                                          departement, ROWNUM numlgent
                                     FROM (SELECT   ent.entite, ent.division,
                                                    ent.resp_gestion,
                                                    ent.departement
                                               FROM tcg_cop_organisation ent
                                              WHERE ent.division = ent.entite
                                           ORDER BY ent.entite,
                                                    ent.division,
                                                    ent.resp_gestion,
                                                    ent.departement)) v2
                            WHERE v1.entite = v2.entite) v4
                    WHERE v3.entite = v4.entite AND v3.division = v4.division) v6
            WHERE v5.entite = v6.entite
              AND v5.division = v6.division
              AND v5.resp_gestion = v6.resp_gestion))
ORDER BY numlgent, numlgdiv, numlgres, numlgdep

RESULT:
ENTITE      DIVISION      RESP_GESTION      DEPARTEMENT      NIVEAU
enti1      enti1      enti1      enti1      1
enti1      div1      div1      div1      2
enti1      div1      resp1      resp1      3
enti1      div1      resp1      dept1      4
enti1      div1      resp1      dept3      4
enti1      div1      resp2      resp2      3
enti1      div1      resp2      dep1      4
enti1      div2      div2      div2      2
enti2      enti2      enti2      enti2      1
enti2      div2      div2      div2      2
enti2      div2      resp3      resp3      3
enti2      div2      resp3      dept4      4

 

by: AYEBPosted on 2008-11-21 at 09:38:03ID: 31518715

For this question the solution is ok Please have a lok to my next question
I will open a new one.
Thanks.

20120131-EE-VQP-002

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