Bruce Momjian <pgman@candle.pha.pa.us> writes:
> I don't know if you can use 7.3 beta against 7.2.X.
Should work; AFAIR libpq does not do anything that wouldn't work against
7.2 or even older servers. 7.3 psql's \d commands are pretty thoroughly
broken for older servers, but that shouldn't affect direct use of libpq.
regards, tom lane