"Christopher Kings-Lynne" <chriskl@familyhealth.com.au> writes:
> Are these columns in pg_class:
> relukeys | relfkeys | relhaspkey
> unused or what?
They may be unused by the backend, but that doesn't mean that
applications don't look at them. I find references to relhaspkey
in pgaccess, for example.
regards, tom lane