On Mon, 2005-07-25 at 22:02, Tom Lane wrote:
> Scott Marlowe <smarlowe@g2switchworks.com> writes:
> > On Mon, 2005-07-25 at 16:56, Martijn van Oosterhout wrote:
> >> pg_dump should be able to dump any older version. It's a bug otherwise.
>
> > But FYI that backwards compatibility was introduced around 7.3 or 7.4
> > version. Before that you'd have issues. I know from experience that V
> > 7.2 pg_dump / pg_dumpall had issues with 7.0 and / or 7.1 or something
> > like that. Not sure the exact versions.
>
> pg_dump believes it can dump from any server back to 7.0; if it can't,
> that's a bug, and details would be appreciated.
>
> Note however that the *output* of pg_dump is not guaranteed to load into
> a server older than the pg_dump's own version.
I thought the backwards dumping compatibility thing was fairly new (i.e.
it showed up around 7.3 or 7.4) and before that, if you used, say
pg_dump from 7.1 to try and dump from 6.5 you'd get errors.