How to make addition of few records in query

Question

Hello.
Hope you will understand this.
We have one view with select on 5 different tables.
We get a lot of records from this query. Some of those records are special. And we have to sum those records and present them as one.
Example.:
Now the query results looks like:
project, parameter, value
12, '2', 5
20, '742', 0
20, '743', 1
30, '5', 1
20, '744', 1
I want this result:
12, '2', 5
20, 'addition of 742, 743, 744', 2
30, '5', 1
How can we do that?
Thanks.

Answer 1

with t as (
           select 12 project, '2' parameter, 5 value from dual union all
           select 20, '742', 0 from dual union all
           select 20, '743', 1 from dual union all
           select 30, '5', 1 from dual union all
           select 20, '744', 1 from dual
select  project, case when cpt>1  then 'addition of  '||  res else res end  res,
            value,cpt
from t
model
return updated rows
partition by ( project )
dimension by ( row_number() over (partition by project ORDER BY parameter asc) as position )
measures ( cast( parameter as varchar2(1000) ) as res,
                    sum(value)over(partition by project)  value,
count(parameter)over(partition by project) cpt )
rules
upsert
iterate( 1000 )
until ( presentv(res[iteration_number+2],1,0) = 0 )
( res[1] =    res[1] || case when res[iteration_number+2]  is present then
                                              ',' || res[iteration_number+2]   end   )
order by project
SQL> with t as (
  2             select 12 project, '2' parameter, 5 value from dual union all
  3             select 20, '742', 0 from dual union all
  4             select 20, '743', 1 from dual union all
  5             select 30, '5', 1 from dual union all
  6             select 20, '744', 1 from dual
  7            )
  8  select  project, case when cpt>1  then 'addition of  '||  res else res end  res,
  9              value,cpt
10  from t
11  model
12  return updated rows
13  partition by ( project )
14  dimension by ( row_number() over (partition by project ORDER BY parameter asc) as position )
15  measures ( cast( parameter as varchar2(1000) ) as res,
16                      sum(value)over(partition by project)  value,
17   count(parameter)over(partition by project) cpt )
18  rules
19  upsert
20  iterate( 1000 )
21  until ( presentv(res[iteration_number+2],1,0) = 0 )
22  ( res[1] =    res[1] || case when res[iteration_number+2]  is present then
23                                                ',' || res[iteration_number+2]   end   )
24  order by project
25  /
   PROJECT RES                                                     VALUE        CPT
        12 2                                                           5          1
        20 addition of  742,743,744                                    2          3
        30 5                                                           1          1
SQL>