Re: contracting tables

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От Jeff Eckermann
Тема Re: contracting tables
Дата
Msg-id 20011130154536.41315.qmail@web20809.mail.yahoo.com
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Ответ на contracting tables  ("Peter T. Brown" <peter@memeticsystems.com>)
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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@memeticsystems.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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