Re: upgrade path from PG 8.3 to PG 9.5

On Tue, Mar 21, 2017 at 9:40 AM, Stephen Frost <sfrost(at)snowman(dot)net> wrote:

> Greetings,
>
> * Thorsten Schöning (tschoening(at)am-soft(dot)de) wrote:
> > Guten Tag Keith,
> > am Donnerstag, 23. Februar 2017 um 18:57 schrieben Sie:
> >
> > > You can go directly from 8.3 to 9.5. Just be sure and use the
> > > pg_dump from 9.5 to generate the dump file from 8.3.
> >
> > Is there a specific reason for that? My current approach for upgrades
> > was dumping the old database using the old pg_dump, uninstalling the
> > old Postgres, installing the new one and restore from the old dump.
>
> Yes. Using the older pg_dump may result in dumps that can't be restored
> into the newer version of PG because things like keywords have been
> added and must now be quoted. There are possibly other things that have
> been changed between the old version and the new one which would also
> require the new pg_dump to be used, but keywords are the big one.
>
>
The proper solution to the keyword/identifier quoting problem is to use
"--quote-all-identifiers"​.

​David J.
​