Comma delimited lists

Question

The data is as below:
create table mylist
id number,
list varchar2(50)
begin
insert into mylist (id,list) values (111,'1,2');
insert into mylist (id,list) values (222,'2,3');
insert into mylist (id) values (333);
commit;
end;
create table mylistvalues
value number
begin
insert into mylistvalues (value) values (1);
insert into mylistvalues (value) values (2);
insert into mylistvalues (value) values (3);
insert into mylistvalues (value) values (4);
commit;
end;
I have to populate all ids in mylist table where list has one valid value in mylistvalues table.
The output should be 111 and 222, because 1,2,3 are in mylistvalues table.
Thanks.

Answer 1

SELECT  DISTINCT id
  FROM  mylist,
        mylistvalues
  where regexp_like(',' || list || ',',',' || value || ',')
        ID
       222
       111
SQL> SY.