Re: BUG #1468: psql_dump is not backward compatible

Yea, we have never supported loading newer dumps into older servers. We
do support the opposite, though.

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Tobias Brox wrote:
>
> The following bug has been logged online:
>
> Bug reference: 1468
> Logged by: Tobias Brox
> Email address: tobias(at)nordicbet(dot)com
> PostgreSQL version: 8.0.0
> Operating system: Linux, gentoo
> Description: psql_dump is not backward compatible
> Details:
>
> I have a situation where my peers is using PG 7.4.6, and they are pretty
> pissed off at me for using PG 8.0 - the DB dumps are incompatible. The
> command I use for generating the dump is "pg_dump -Oa NBET".
>
> I don't have version 7.4.6 installed myself, so I cannot reproduce this
> reliably on my own.
>
> We use serial primary keys, the problem reported by my peers is that PG
> 7.4.6 needs an "update sequence" on all the primary keys. The old data dump
> outputs lines on this form:
>
> SELECT pg_catalog.setval('user_group_id_seq', 5, False);
>
> PG 8.0 swallows the old data without problems, so I suppose it's needed with
> a switch for backword compatibility there.
>
> I tried pg_dump with the parameters "OaD" (make full "insert"-statements,
> should be compatible with anything), but this was rejected by my peers.
>
> I think the problem should be reproducable with the information above, if
> not I can try install PG 7.4.6
> to create some comparable dumps with PG 8.0 and PG 7.4.6.
>
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