I have marked these columns as unused in pg_class.h.
> "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
>
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