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From: Tom Lane <tgl@sss.pgh.pa.us>
To: riina.piiroinen@op.fi
cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #17374: Bug in restore
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References: <17374-33152d4618de991f@postgresql.org>
Comments: In-reply-to PG Bug reporting form <noreply@postgresql.org>
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Date: Thu, 20 Jan 2022 09:11:12 -0500
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PG Bug reporting form <noreply@postgresql.org> writes:
> While restoring backup-file to another schema, I got following error:
> "pg_restore: could not execute query: ERROR  "<table_name>" already
> exists.
> Despite the error, the rows in the tables doubled.

That sounds like the expected result if you try to restore over
an existing table.  Use --clean to drop and recreate the target
tables.

			regards, tom lane