Please help me correct this SQL query...

Question

hi, please consider following:
create table test(col varchar2(255))
insert into test values ('DURATION');
insert into test values ('VOLUME');
select col from test where col in ('DURATION','VOLUME');
this returns the rows.
but my input string is a comma separated list:
DURATION,VOLUME
so i try
select col from test where col in (replace('DURATION,VOLUME',',',''','''));
but no results. Or:
select col from test where col in (''''||replace('DURATION,VOLUME',',',''',''')||'''');
however
select ''''||replace('DURATION,VOLUME',',',''',''')||'''' from dual
gives 'DURATION','VOLUME'
so why doesnt it work?
hope you can help. Thanks

Answer 1

Another solution will be:
SQL> variable comma_sep_value VARCHAR2(100);
SQL> exec :comma_sep_value := 'DURATION,VOLUME,ABCD'
PL/SQL procedure successfully completed.
SQL> SELECT *
  2    FROM TEST
  3   WHERE INSTR (:comma_sep_value, col) > 0
  4  /
DURATION
VOLUME
2 rows selected.
SQL>  exec :comma_sep_value := 'DURATION';
PL/SQL procedure successfully completed.
SQL>  SELECT *
  2     FROM TEST
  3    WHERE INSTR (:comma_sep_value, col) > 0
  4   /
DURATION
1 row selected.
SQL>  exec :comma_sep_value := 'DURATION,VOLUME';
PL/SQL procedure successfully completed.
SQL> SELECT *
  2    FROM TEST
  3   WHERE INSTR (:comma_sep_value, col) > 0
  4  /
DURATION
VOLUME
2 rows selected.Hope this helps.
Regards,
Jo