How to pass list of IDs from one Oracle schema to another?

Question

I use the Oracle SQL developer to query the Oracle database

So, my simplified script is as follows:

alter session set current_schema=schema1;
select id from table1

alter session set current_schema=schema2;
select * from table2 where remote_id in (<the list from the 1st query in schema1>)

Currently I copy the list from one schema to another manually. How to automate passing the list?

Answer 1

Fully qualified database object references in Oracle are SCHEMANAME.OBJECTNAME so regardless of which schema is your current schema, you can reference objects in other schemas like so:

Select *
  from schema2.table2
 where remote_id in (select id from schema1.table1);