PostgreSQL 12 Given a table “customer” with a column “deadfiled” of the type boolean. The column deadfiled is used to indicate that a row is “in the trash bin”. The app has a window that lists the contents of the “trash bin”, which any rows with deadfiled = true. Row so marked should be excluded from views and queries in all other cases when the current user has the role “app_user". I thought I could use row level security (RLS) to filter out all the deadfiled rows. ALTER TABLE customer ENABLE ROW LEVEL SECURITY; CREATE POLICY filter_customer_deadfiled ON public.customer FOR SELECT TO app_staff USING ( NOT deadfiled ); However, that did not work as desired. I have read through a dozen articles and posts online but haven’t figured out the USING clause. To my surprise, this worked: CREATE POLICY customer_deadfiled ON public.customer AS PERMISSIVE FOR SELECT TO prm_staff USING (coalesce(deadfiled,false)=false); So my question is specifically about the USING clause, but also more broadly about this attempted application of RLS. Links and advice accepted with gratitude. Mark
