How to write the new records not with existing records.

Question

hi,
I have a script.If i execute the script it writes the records.but its writing with the exisiting records.It writes not only the new records but also the old records.
for eg: the exisiting records are:
1111115-2,USD,DINESH,1,1,,,,9,,,,123456184001,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111116-2,USD,DINESH,1,1,,,,9,,,,123456184001,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111117-2,USD,DINESH,1,1,,,,9,,,,123456184001,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111118-2,USD,DINESH,1,1,,,,9,,,,123456184001,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111119-2,USD,DINESH,1,1,,,,9,,,,123456184001,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
but now what happend is the new records such as
1111116-2,USD,DINESHBABU,1,1,,,,9,,,,123456184003,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111117-2,USD,DINESHBABU,1,1,,,,9,,,,123456184003,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111118-2,USD,DINESHBABU,1,1,,,,9,,,,123456184003,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111119-2,USD,DINESHBABU,1,1,,,,9,,,,123456184003,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
it gets appended with the old existing records,
1111117-2,USD,DINESH,1,1,,,,9,,,,123456184001,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111118-2,USD,DINESH,1,1,,,,9,,,,123456184001,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111119-2,USD,DINESH,1,1,,,,9,,,,123456184001,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111113-2,USD,DINESHBABU,1,1,,,,9,,,,123456184003,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111114-2,USD,DINESHBABU,1,1,,,,9,,,,123456184003,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111115-2,USD,DINESHBABU,1,1,,,,9,,,,123456184003,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111116-2,USD,DINESHBABU,1,1,,,,9,,,,123456184003,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111117-2,USD,DINESHBABU,1,1,,,,9,,,,123456184003,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111118-2,USD,DINESHBABU,1,1,,,,9,,,,123456184003,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
1111119-2,USD,DINESHBABU,1,1,,,,9,,,,123456184003,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,9999,,,,
there will be some problem happens when we are going to upload a bulk data of say 25000 records.if its gonna update 20000 records,rest 5000 records i have to do it in next step,if this is going to happen then the first 20000 records will be displayed forever.because it have the capacity to write 20000 records.thenext 500 records will not be written.so there is a chance of redundancy.how to avoid this redundancy while running this script
my script is
create or replace procedure input_tables(table1 in varchar2)
is
str varchar2(32767);
cnt number(2);
cursor c1(tname in varchar2)
is
select column_name
from all_tab_columns
where table_name = tname
order by column_id;
rec c1%rowtype;
begin
cnt:= 1;
str:= 'declare '||
'cursor c2 '||
'is '||
'select ';
open c1(table1);
loop
fetch c1 into rec;
exit when c1%notfound;
if cnt = 1 then -- Added New
str:= str||rec.column_name; -- Added New
cnt:= cnt + 1; -- Added New
else -- Added New
str:= str||'||'',''||'||rec.column_name; -- Added New
end if; -- Added New
end loop;
close c1;
str:= str||' SRC from '||table1||';'||
' r2 c2%rowtype;'||
' ft UTL_FILE.file_type;'||
' str2 varchar2(200);'|| --Added New
' begin '||
' ft := UTL_FILE.fopen(''SAMPLE'',''OUTPUT.csv'',''w'');'||
' for r2 in c2'||
' loop '||
' UTL_FILE.put_line(ft,r2.SRC);'||
' end loop;'||
' UTL_FILE.fclose(ft);'||
' end;';
execute immediate(str);
end;
thanks,
Ratheesh.

Answer 1

Hi!
U can check the following script --
create or replace procedure input_tables(table1 in varchar2,start_col in number,last_col in number)
is
     str varchar2(32767);
     cnt number(2);
     cursor c1(tname in varchar2)
     is
       select column_name
       from all_tab_columns
       where table_name = tname
       order by column_id;
     rec c1%rowtype;
begin
     cnt:= 1;
     str:= 'declare '||
     'cursor c2 '||
     'is '||
     'select ';
     open c1(table1);
     loop
          fetch c1 into rec;
          exit when c1%notfound;
               if cnt = 1 then -- Added New
                    str:= str||rec.column_name; -- Added New
                    cnt:= cnt + 1; -- Added New
               else -- Added New
                    str:= str||'||'',''||'||rec.column_name; -- Added New
               end if; -- Added New
     end loop;
     close c1;
     str:= str||' SRC from '||table1||
     ' where rownum between '||start_col||' and '||last_col||';'|| -- Added New
     ' r2 c2%rowtype;'||
     ' ft UTL_FILE.file_type;'||
     ' str2 varchar2(200);'|| --Added New
     ' begin '||
     ' ft := UTL_FILE.fopen(''SAMPLE'',''OUTPUT.csv'',''w'');'||
     ' for r2 in c2'||
     ' loop '||
     ' UTL_FILE.put_line(ft,r2.SRC);'||
     ' end loop;'||
     ' UTL_FILE.fclose(ft);'||
     ' end;';
     execute immediate(str);
end;
/ To print first ten rows --
exec input_tables('EMP',1,10);  --first 10 rowsTo print next remain rows --
exec input_tables('EMP',11,15);N.B: No tested....
Regrads.
Satyaki De.