Re: Duplicate records - Mailing list pgsql-sql

Where do you see the second table in it?

I guess here:

A = mytable
B = (select field1, field2, count(*) from mytable group by field1, field2 having count(*) > 1)

So that is all around one table that is 'mytable', where A and B are just the aliases.

--
Shoaib Mir
EnterpriseDB (www.enterprisedb.com)

On 2/2/07, Ezequias Rodrigues da Rocha < ezequias.rocha@gmail.com> wrote:

Thank you but are you talking of two tables ? I intent to check in only one table.

Please explain to me.

Ezequias

2007/2/2, Bart Degryse < Bart.Degryse@indicator.be>:

select *

from mytable A, (select field1, field2, count(*) from mytable group by field1, field2 having count(*) > 1) B

where A.field1 = B.field1 and A.field2 = B.field2

>>> "Ezequias Rodrigues da Rocha" < ezequias.rocha@gmail.com> 2007-02-02 14:48 >>>

Hi list,

I am making some data minning and would like to know if someone tell me how to retrieve the duplicate records based in one or two fields of my table.

Any help would be welcomed.

--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                                  Atenciosamente (Sincerely)
                        Ezequias Rodrigues da Rocha
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
A pior das democracias ainda é melhor do que a melhor das ditaduras
The worst of democracies is still better than the better of dictatorships
http://ezequiasrocha.blogspot.com/

--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
                                  Atenciosamente (Sincerely)
                        Ezequias Rodrigues da Rocha
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
A pior das democracias ainda é melhor do que a melhor das ditaduras
The worst of democracies is still better than the better of dictatorships
http://ezequiasrocha.blogspot.com/