"Joel Jacobson" <joel(at)compiler(dot)org> writes:
> When copying all tables in pg_catalog, to a separate schema with the purpose
> of testing if foreign keys could be added for all oid columns, I got an error for a toast table:
> ERROR: insert or update on table "pg_class" violates foreign key constraint "pg_class_reltype_fkey"
> DETAIL: Key (reltype)=(86987582) is not present in table "pg_type".
I'm too lazy to check the code right now, but my recollection is that we
do not bother to make composite-type entries for toast tables. However,
they should have reltype = 0 if so, so I'm not quite sure where the
above failure is coming from.
regards, tom lane