From: Bricklen <bricklen@zyahoo.zcomz>
To: pgsql-sql@postgresql.org
Subject: Re: Finding duplicated values
Date: Thu, 21 Oct 2004 19:20:42 GMT
Message-ID: <e_Tdd.31475$z96.7475@clgrps12> (raw)
In-Reply-To: <LPENJIOOLAIJBFKIBDKOIEAHFPAD.kenta@ezyield.com>
References: <LPENJIOOLAIJBFKIBDKOIEAHFPAD.kenta@ezyield.com>
Kent Anderson wrote:
> I have a few tables that have duplicated values from an import from a
> different database. I have two keys I tried to set as primary and got an
> error
> ERROR: could not create unique index
> DETAIL: Table contains duplicated values.
>
> Is there some join I can use to compare the hmhmkey, wmwmkey pairs
> against the table to find duplicate values? Each pair key should be
> unique but the old database was less than normalized.
>
> I was trying to use the code below but it returned no rows.
>
> SELECT hmhmkey, wmwmkey
> FROM exceptions
> EXCEPT
> SELECT hmhmkey, wmwmkey
> FROM exceptions;
>
> Any suggestions?
>
> Kent Anderson
> EZYield.com
> 407-629-0900
> www.ezyield.com <http://www.ezyield.com/;
Try http://archives.postgresql.org/pgsql-sql/1999-03/msg00239.php
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To: pgsql-sql@postgresql.org
Cc: bricklen@zyahoo.zcomz
Subject: Re: Finding duplicated values
In-Reply-To: <e_Tdd.31475$z96.7475@clgrps12>
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