Equivalent of 'Not In' in Alteryx

Hi, doing a trial of Alteryx at the moment and trying to migrate an SQL script to Alteryx.  The existing script starts by creating a table of data.  It then creates a 2nd table, but only for records that have not already been captured in the first table.  This is achieved in SQL by saying where record_id not in (sel record id from table1) .. Both tables are then used much later on in the process.

Is there an equivalent in Alteryx?  I want to create an Input object, and then create a 2nd input object that excludes records that do not exist in the first object.