Sorting and Grouping -Two months in this query

Question

Hi All,
many thanks for jeneesh
i am doing project for construction company, i face this problem in grouping points according to relation between these points the
Relation is from 1 to 100. If the point between this rang that mean there is relation between these points.
this question already solve but the results not correct when the table has more data.
SQL - sorting and grouping.
from jeneesh and many thanks for him.
This example for more clarifications
for example i have these points
id   location         percentage   comments
1     loc 1,2          20%                that mean point  1 and 2 close to each other by 20%
2     loc 1,3          40%              that mean point 1 and 3 close to each other byy 40%
3     Loc 8,6          25%               that mean point 8 and 6 close to each other by 25%
4     Loc  6,10        20%
5     LOC 11,10        10 %
6     LOC 15,14         0%Also , we can see the relation between these points as follwoing
- points 1,2,3 in one group why becuase 1,2 has relation and 1,3 has relation that mean 1,3 also has hidden relation.
- Points 6,8,10,11 in second group there are relations between them .
- but no relation between 1 or 2 or 3 with any point of 6,8,9,10,11
- as well as no relation between 15, 14 that mean 14 in third group and 15 in fourth group.
whati need?
to group the points that has relation according to percentage value ascending
The most important part is to group the points. SO , the below query the gropuing is not correct.
I have the follwoing table with data
drop table temp_value;
create table temp_value(id number(10),location varchar2(20), percentage number(9));
insert into temp_value values  (1,'LOC 1,2',10);
insert into  temp_value values (2,'LOC 1,3',0);
insert into  temp_value values (3,'LOC 1,4',0);
insert into  temp_value values (4,'LOC 1,5',0);
insert into  temp_value values (5,'LOC 1,6',0);
insert into  temp_value values (6,'LOC 2,3',0);
insert into  temp_value  values(7,'LOC 2,4',0);
insert into  temp_value values (8,'LOC 2,5',30);
insert into  temp_value values (9,'LOC 2,6',0);
insert into  temp_value values (10,'LOC 3,4',0);
insert into  temp_value values (11,'LOC 3,5',0);
insert into  temp_value values (12,'LOC 4,5',40);
insert into  temp_value values (13,'LOC 4,6',0);
insert into  temp_value values (14,'LOC 6,7',40);
insert into  temp_value values (15,'LOC 7,2',0);
insert into  temp_value values (16,'LOC 8,2',60);
insert into  temp_value values (17,'LOC 8,3',0);
insert into  temp_value values (18,'LOC 3,1',0);
insert into  temp_value values (19,'LOC 9,6',30);
insert into  temp_value values (20,'LOC 11,2',0);
insert into  temp_value values (22,'LOC 12,3',10);
insert into  temp_value values (23,'LOC 19,3',0);
insert into  temp_value values (24,'LOC 17,3',0);
insert into  temp_value values (24,'LOC 20,3',0);when i used this query , the results is not correct
with t as
    (select percentage,loc1,loc2,sum(case when percentage = 0 then 1
                       when loc1 in (l1,l2) then 0
                   when loc2 in (l1,l2) then 0
                   when l1 is null and l2 is null then 0
                   else 1
              end) over(order by rn) sm
    from (     select id,location,percentage,
                       regexp_substr(location,'\d+',1,1) LOC1,
                      regexp_substr(location,'\d+',1,2)  LOC2,
                     lag(regexp_substr(location,'\d+',1,1))
                      over(order by percentage desc) l1,
                      lag(regexp_substr(location,'\d+',1,2))
                      over(order by percentage desc) l2,
              row_number() over(order by percentage desc) rn
      from temp_value
      order by percentage desc
   select loc,min(sm)+1 grp
     from(
       select loc,rownum rn,sm
       from(
       select percentage,decode(rn,1,loc1,loc2) loc,sm
       from t a,
            (select 1 rn from dual union all
             select 2 from dual ) b
       order by percentage desc,decode(rn,1,loc1,loc2) asc
    group by loc
   order by min(sm),min(rn);the results
SQL> /
LOC                         GRP
2                             1
8                             1
6                             2
7                             2
4                             3
5                             3
9                             4
1                             5
12                            6
3                             6
11                           13
LOC                         GRP
19                           14
17                           15
20                           22
14 rows selected.SQL>
but the correct is
Location        group No
2                  1
8                  1
4                  1
5                  1
1                  1
6                  2
7                  2
9                  2
12                 3
3                  3
19                 4
17                 5
20                 6many thanks in advance.
Edited by: Ayham on Nov 30, 2012 3:07 AM

Answer 1

Thanks,
i want the sorting for each group DESC not all groups to gather
when i used your query i get
SQL> with connects as (
  2  select distinct
  3   loc1
  4  ,loc2
  5  ,dense_rank() over (order by connect_by_root(loc1)) grp
  6  from temp_value
  7  start with
  8  percentage != 0
  9  connect by nocycle
10  (prior loc2 = loc1
11  or
12  prior loc1 = loc2
13  or
14  prior loc1 = loc1
15  or
16  prior loc2 = loc2)
17  and
18  percentage != 0
19  )
20  ,  got_grp AS
21  (
22     select
23      loc
24      ,dense_rank() over (order by grp) grp
25      from (
26      select
27       loc
28       ,max(grp) keep (dense_rank first order by grp) grp
29       from (
30       select
31        loc1 loc
32        ,grp
33        from connects
34        union
35        select
36         loc2
37         ,grp
38         from connects
39         )
40         group by
41         loc
42        )
43  )
44  SELECT       loc
45  ,    grp
46  FROM         got_grp
47  ORDER BY  COUNT (*) OVER (PARTITION BY grp)   DESC
48  ,            grp
49  ,    loc
50  ;The output is
LOC                         GRP
1                             1
2                             1
4                             1
5                             1
8                             1
6                             3
7                             3
9                             3
12                            2
3                             2
10 rows selected.but i want it like this
Loc  Grp
2      1
8      1
4      1
5      1
1      1
12    2
3      2
6      3
7      3
9      3So , the sorting for each group Separate based on the percentage column.
many thanks
Edited by: Ayham on Nov 30, 2012 9:43 AM