Re: removing duplicates - sql

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От Tommi Maekitalo
Тема Re: removing duplicates - sql
Дата
Msg-id 200208220813.08337.t.maekitalo@epgmbh.de
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Ответ на removing duplicates - sql  ("Johnson, Shaunn" <SJohnson6@bcbsm.com>)
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Am Donnerstag, 22. August 2002 01:52 schrieb Johnson, Shaunn:
> Howdy:
>
> I have a table that has a primary key on it.  Somewhere in
> the table, it seems to have a few duplicate records in it.
> I'm trying to weed out the duplicates, but am having problems
> with the sql.
>
...

Hi,

select distinct t1.name, t1.addr1, t1.phone, t1.city
  from emp_table t1
 where (select count(*) from emp_table t2
         where t1.name = t2.name
           and t1.addr1 = t2.addr1
           and t1.phone = t2.phone
           and t1.city = t2.city) > 1

will do it.


Tommi


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