From: | Doug McNaught <doug(at)mcnaught(dot)org> |
---|---|
To: | Joep DeVocht <joep(at)masktools(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Clearing tables questions |
Date: | 2003-01-31 19:35:48 |
Message-ID: | m3hebpglij.fsf@varsoon.wireboard.com |
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Lists: | pgsql-general |
Joep DeVocht <joep(at)masktools(dot)com> writes:
> Hi,
>
> I have two fairly simple questions (I think) but I can't
> seem to find the answer in the docs or mailing-lists.
>
> I'm using pg_dump and pg_restore to backup my dbase.
> However, I noticed that when I do a pg_restore, the
> dumped contents are added to the currents ones.
> This is not what I want. The tables should be cleared first.
> How do I do this initializing the dbase?
pg_restore assumes the database is completely empty. If it's not you
may get duplicate information.
> Another question I have is the following.
> What sql command can I use to clear (delete) all tables not
> starting with 'pg_'.
Easiest thing to do is probably:
1. use 'pg_dump -s' to save the schema
2. DROP DATABASE
3. CREATE DATABASE
4. psql mydb < schema_dump.sql
-Doug
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