Re: migrating data from an old postgres version

On Fri, Jul 15, 2016 at 5:07 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:

> Willy-Bas Loos <willybas(at)gmail(dot)com> writes:
> > (the manual says:"It is recommended that you use the pg_dump and
> pg_dumpall
> > programs from the newer version of PostgreSQL")
>
> The reason for the manual's recommendation is that the newer version might
> contain bug fixes not present in the older one. But discounting that
> risk, a dump made by an older version of pg_dump usually should load into
> a newer server. We try *very* hard to avoid breaking syntaxes used by old
> pg_dump versions. The possibility of identifiers conflicting with new
> reserved words is a hazard of course, which is what
> "--quote-all-identifiers" was invented to address. But if you don't use
> that option, you're at risk for that regardless of whether you dumped with
> the older or new pg_dump.
>
> regards, tom lane
>

Ah, ok. So maybe the biggest problem was the thing with the sequences.
One usually only gets into such an incident once, a big db with no
sequences is no fun.
@Melvin so then you were more correct than i would give you credit for.

Cheers,
--
Willy-Bas Loos