using comma separated values inside IN clause for NUMBER column

Question

I have 2 procedures inside a package. I am calling one procedure to get a comma separated list of user ids.

I am storing the result in a VARCHAR variab

Answer 1

The problem is that oracle does not interprete the VARCHAR2 string you're passing as a sequence of numbers, it is just a string.

A solution is to make the whole query a string (VARCHAR2) and then execute it so the engine knows he has to translate the content:

DECLARE
    TYPE T_UT IS TABLE OF users_Table%ROWTYPE;
    aVar T_UT;
BEGIN
    EXECUTE IMMEDIATE 'select * from users_Table where user_id in (' || l_userIds || ')' INTO aVar;
...

END;

A more complex but also elegant solution would be to split the string into a table TYPE and use it casted directly into the query. See what Tom thinks about it.