Palle Girgensohn <[EMAIL PROTECTED]> writes:
> Surely, I can use an postgresql 7.2 client to connect to a 7.3.x or 7.4 
> server, right?

It will work unless the client makes now-obsolete assumptions about the
layout of the system catalogs.

As an example, a 7.2 psql will work for issuing regular user queries
against a newer server, but its catalog inquiry stuff (\d and friends)
will work poorly or not at all.

                        regards, tom lane

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