KaiGai Kohei <kaigai(at)kaigai(dot)gr(dot)jp> writes:
> I have a plan to add a new field (declared as "int2 relrowacl") into
> pg_class to show what column stores its Row-level ACLs.
If you want the column to be "hidden" in the same way that system
columns are, I'm afraid this is a pretty bad idea. There are way too
many places that would require weird hacks to keep from treating a
positive-numbered column as a regular user column.
regards, tom lane