Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> writes:
> Tom Lane wrote:
>> (And no, I don't especially
>> approve of RELKIND_SEQUENCE being 'S' either, but it's far too late to
>> change that.)
> FWIW the reason SEQUENCE uses S instead of 's' is that the latter was
> taken for "special" relations, which we removed a few releases ago
> (commit 3a694bb0a1).
Yeah, I'd just been reminded of that by some code in describe.c.
So there actually is a reason for sequences to be 'S', or once was.
regards, tom lane