From: | Jeff Eckermann <jeff_eckermann(at)yahoo(dot)com> |
---|---|
To: | "Peter T(dot) Brown" <peter(at)memeticsystems(dot)com>, pgsql-sql(at)postgresql(dot)org |
Subject: | Re: contracting tables |
Date: | 2001-11-30 15:45:36 |
Message-ID: | 20011130154536.41315.qmail@web20809.mail.yahoo.com |
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Lists: | pgsql-sql |
Thinking about that some more:
SELECT INTO table2 DISTINCT * FROM table1;
TRUNCATE table1;
INSERT INTO table1 SELECT * FROM table2;
DROP TABLE2;
may be easiest, if you want to preserve table1, and
need distinct row values.
--- "Peter T. Brown" <peter(at)memeticsystems(dot)com> wrote:
> Hi--
>
> I have a table with many records, some of which are
> duplicates (there is no
> unique constraints). How can I contract this table
> to remove any of these
> duplicate records? Like when using GROUP BY in a
> select statement, except
> that I want to just remove the extra entries from
> this table directly... Any
> ideas?
>
>
> Thanks,
>
> Peter Brown
>
>
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