Christoph Berg <myon(at)debian(dot)org> writes:
> I didn't understand the current wording of the NOTES section in
> psql(1) on which major versions psql is compatible with, so here's a
> patch to make that more explicit.
This seems both very repetitive and incorrect in detail.
Some operations will work fine with older servers, some won't.
I don't think that we want to undertake documenting exactly
which commands work how far back, so my inclination is to
add a nonspecific disclaimer along the lines of
Some commands may not work with very old servers (before 9.2).
regards, tom lane