Problem with my aggregate function

Hello

I tried to build my own global function in the chain, but I have a problem when I use it in my application. When I'm with her, he wrote ORA904, considering that this idenfifier exists. Do you know what is the problem?

here my aggregate function:
create or replace FUNCTION aggme (query_in in VARCHAR2) RETURN VARCHAR2 IS
    incoming    varchar2(4000);
    hold_result varchar2(4000);
    c sys_refcursor;
Begin
    open c for query_in;
    loop
        fetch c into incoming;
        exit when c%notfound;
        hold_result := hold_result||','||incoming;
    end loop;
    return ltrim(hold_result,',');
END;
and here my request using my aggregate function aggme:
select
  RES.LASTNAME as "LASTNAME",
  RES.FIRSTNAME as "FIRSTNAME",
  aggme('select NAME from PATHOLOGY where ID= RES.PATHOLOGY_ID') as "PATHOLOGY"
from
  TBK_RESOURCE RES

user539451 wrote:
Hi BluShadow,

I followed your advice and try to use the aggregation of clob. No problem to compile the function but when I use the clobagg to my query, is not aggregated. Perhaps, I don't use it correctly.

select
RES.PATIENT_LASTNAME as "LASTNAME",
RES.PATIENT_FIRSTNAME as "FIRSTNAME",
(select trim(',' from clobagg(name||',')) as "pathology" from pathology where ID= RES.PATHOLOGY_ID)
FROM
TBK_RESOURCE RES

output, I have:

FIRSTNAME. LASTNAME. PATHOLOGY
TOTO | OTOT | ACB
TOTO | OTOT | GB

instead of having:
TOTO OTOT ACB, GB

Well, I don't have data to work with, but it works well for me...

SQL> ed
Wrote file afiedt.buf

  1  with t as (select 'TOTO' as FIRSTNAME, 'OTOT' as LASTNAME, 'PBR' as PATHOLOGY from dual union all
  2             select 'TOTO', 'OTOT', 'GB' from dual)
  3  --
  4  -- end of test data
  5  --
  6  select firstname, lastname
  7        ,trim(',' from clobagg(pathology||',')) as pathology
  8  from t
  9* group by firstname, lastname
SQL> /

FIRS LAST PATHOLOGY
---- ---- --------------------------------------------------------------------------------
TOTO OTOT PBR,GB

Tags: Database

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