From: Tom Lane <tgl@sss.pgh.pa.us>
To: Infor Gates <info_gates@yahoo.com>
Cc: pgsql-admin@postgresql.org
Subject: Re: pg_restore
Date: Sun, 18 Jun 2006 01:06:36 -0400
Message-ID: <25775.1150607196@sss.pgh.pa.us> (raw)
In-Reply-To: <20060618025541.91508.qmail@web31110.mail.mud.yahoo.com>
References: <20060618025541.91508.qmail@web31110.mail.mud.yahoo.com>
Infor Gates <info_gates@yahoo.com> writes:
> I am having the impression that pg_restore would over-rides the "old"
> data with the current one. Is my thinking wrong?
Yeah. By default, pg_restore will issue a CREATE TABLE (which of course
fails if the table already exists) followed by COPY (which just tries to
insert data in addition to what might be there already).
There's a command line option to ask pg_restore to try to DROP TABLE
before doing the CREATE TABLE. By and large, though, that's a bad way
to proceed unless you are specifically trying to merge two databases.
The fast and easy way to proceed is to DROP DATABASE, CREATE a fresh
empty database, and pg_restore into that.
regards, tom lane
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To: pgsql-admin@postgresql.org
Cc: tgl@sss.pgh.pa.us, info_gates@yahoo.com
Subject: Re: pg_restore
In-Reply-To: <25775.1150607196@sss.pgh.pa.us>
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