Pl/sql statement with output in reports

Question

Hello,
I am quite new to reports and pl/sql, i have built a pl/sql statement with some loops that works fine when running it in sqlplus.
I would really like to have this running in reports with the variables (v_year, v_month and v_sumvalue) in a table/record in the data view, so i can use them just like any ordinary fields in a table for example in a diagram.
I have tried to create a package spec, setting up a record with the variables as fields. And then a pl/sql function with the following sql (which was a bit modified to work in the pl/sql function). Everything seemed to work since the pl/sql table/record was there with the variables as fields in it, but it never returned anything... just fatal error.
Here is the original pl/sql statement which is working in sqlplus, any help/directions in how to get this working so i can use the variables like fileds in a regular table would be fantastic:
DECLARE
   v_year number(4);
   v_month number(2);
   v_sumvalue number(9,3);
   v_sta varchar2(10);
   v_end varchar2(10);
   v_stopmonth number(2);
BEGIN
   --## Get last 5 years ##--
   select
      to_char(add_months(sysdate,-60),'YYYY'),
      to_char(sysdate,'MM')
      into v_year, v_stopmonth
   from
      dual;
   --dbms_output.put_line(v_year);
   --## Loop 5 years ##--
   for i in 1..5 loop
      v_year := v_year + 1;
      --dbms_output.put_line(v_year);
      --## Loop 12 times (months) ##--
      for k in 0..11 loop
         v_month := k +1;
         --dbms_output.put_line(v_year ||'-'|| v_month);
         select
            sum(nvl(p.value,0)) / 3,
            last_day(add_months(to_date(v_year ||'-'|| v_month ||'-01','YYYY-MM-DD'),-3))+1,
            last_day(to_date(v_year ||'-'|| v_month ||'-01','YYYY-MM-DD'))
            into v_sumvalue, v_sta, v_end
         from
            project p
         where
            p.country_code = 'SWE'
         and
            p.project_type_code = 'P'
         and
            p.start_date between last_day(add_months(to_date(v_year ||'-'|| v_month ||'-01','YYYY-MM-DD'),-3))+1 and last_day(to_date(v_year ||'-'|| v_month ||'-01','YYYY-MM-DD'))
         and
            p.q_category_code between 1000 and 1299
         and
            p.geography_code between 2100 and 2199;
         dbms_output.put_line(v_year ||'-'|| v_month ||' '|| v_sumvalue);
         --dbms_output.put_line(v_year ||'-'|| v_month ||' '|| v_sumvalue ||' '|| v_sta ||' '|| v_end);
      --## Stop monthloop ##--
      end loop;
   --## Stop yearloop ##-
   end loop;
END;Output:
2003-1 19.1
2003-2 20.1
2007-11 164.5
2007-12 135.167Best regards,
Olle

Answer 1

Hi,
Maybe pipelined functions will be useful for you:
http://www.oracle.com/technology/sample_code/tech/pl_sql/htdocs/x/Table_Functions_Cursor_Expressions/Pipelined_Table_Functions.htm
Regards
Jakub Flejmer