Josh Kupershmidt <schmiddy@gmail.com> writes:
> We're essentially pretending that we support all server versions with
> this code, instead of erroring out on some definite old version and
> admitting "sorry, can't do it". ...
> I think we should draw a line somewhere about just how far back psql
> must support,
Says right at the top of the file:
* Support for the various \d ("describe") commands. Note that the current* expectation is that all functions in this
filewill succeed when working* with servers of versions 7.4 and up. It's okay to omit irrelevant* information for an
oldserver, but not to fail outright.
regards, tom lane