Philip Warner <pjw(at)rhyme(dot)com(dot)au> writes:
> I guess we should get the version & refuse to connect...
We deliberately don't do that in psql. Not having working backslash
commands is not necessarily a fatal lack of functionality --- if you're
just going to issue regular SQL commands then psql will work fine with
backends of quite different versions. It doesn't seem like a good idea
to shut off access to that functionality.
A warning at startup about differing versions might be appropriate
though.
regards, tom lane