Concatenating multiple rows in a table - Very urgent - pls help

Question

Can someone please help me out in writing the Sql to concatenate the Text_desc
for each code for all the seq_nos in the ascending order of seq_no and load into the target table(T1). Please see the sample data below in the Source(S1) and the expected result in the target(T1). There are about 2,30,000 records in S1 and the seq_no can be anything.
Source table : S1
Code Seq_no Text_desc
1579 0 BCN5, CO20, ER75
1579 1 FP5, WC6, MATW, OPRH
1579 2 T
1600 0 TW, FP5, AS5, MHSA15, DME20
1600 1 ER100, UR40
Target table: T1
Text_desc (concatenate all the strings for each code in ascending order of seq_no)
code Text_desc
1579 BCN5, CO20, ER75FP5, WC6, MATW, OPRHT
1600 TW, FP5, AS5, MHSA15, DME20ER100, UR40
Thanks in advance,
Maddy

Answer 1

untested
rem ==============================================
create or replace
function f_text (p_code number) return varchar2 is
   l_text varchar2(2000) ;
begin
   for i_rec in 'select text_desc from S1 where code = p_code order by code'
   loop
       l_text := l_text || i_rec.text_desc || ',' ;
   end loop ;
   l_text := rtrim(l_text,',') ;
   return l_text;
end ;
rem ==============================================
insert into T1
   select CODE, f_text (CODE) TEXT
     from
         (select distinct CODE from S1)
rem ==============================================
Message was edited by:
        ruhr0001