How to use multi select in a query report

Question

I defined a lov. This lov retuns name and a id. I want to use the result of this multi select in my query.
I always get invalid number when I choose two items of the select. When I debug I see that the return value of the multi select is 1:2. How can I change the seperator : in , I tried the following but this does't work.
if :P26_PRODUCTTYPE IS NOT NULL then
l_sql := l_sql ||' and producttype in
(REPLACE(:p26_producttype,'':'','','' ))';
end if;

Answer 1

as you're finding, multiple values selected from html db multi-select list items (and checkboxes) are stored as a single, colon-delimited string. i explained an easy way to handle this via pl/sql in...
Multiple select list
...that post shows you how to throw the selected values into a pl/sql table and step through them as needed. it also showed how to use an instr to parse through the string if you want to go that route. you could use that same instr logic right in your sql query. so let's say your lov for your multi-select item (P1_MY_MULTISELECT, we'll call it) was defined as...
select ename, empno from emp order by 1
...and your user selected KING, FORD, and JONES. :P1_MY_MULTISELECT would store those values as...
7839:7902:7566
...you could then write a query to return the selected enames with something like...
select ename, job
from emp
where insrt (':'||:P1_MY_MULTISELECT||':',':'||empno||':') != 0
...hope this helps,
raj