PL/SQL query IN comma deliminated string

Question

I am developing an application in Oracle APEX. I have a string with user id\'s that is comma deliminated which looks like this,

45,4932,20,19

Answer 1

An easier solution is to use instr:

SELECT * FROM users u 
WHERE instr(',' || :P5_USER_ID_LIST ||',' ,',' || u.user_id|| ',', 1) !=0;

tricks:

',' || :P5_USER_ID_LIST ||','

to make your string ,45,4932,20,19,

',' || u.user_id|| ','

to have i.e. ,32, and avoid to select the 32 being in ,4932,