RE: Duplicate rows

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Thanks to every one that gave their inputs in order to solve my problem. It
was solved with a simple SQL statement using a sub-query like:

insert into products (id, code, desc, everused) select distinct '',
code,desc, everused from catalog

Now my products table has only 8500 records!!

-----Original Message-----
From: Ade Olonoh [mailto:ade@xxxxxxxxxx]
Sent: Miércoles, 01 de Marzo de 2006 12:19 p.m.
To: Miguel Guirao
Cc: php-db@xxxxxxxxxxxxx
Subject: Re:  Duplicate rows


Assuming you're using MySQL, instead of using INSERT INTO, you can use
REPLACE INTO instead.  If you have unique keys on that table, the new
record will overwrite existing records with the same unique keys instead
of creating a new one.

    http://dev.mysql.com/doc/refman/5.0/en/replace.html

--Ade.

Miguel Guirao wrote:
> My dear beloved friends,
>
> I have a catalog of products that a product provider gave, sadly for me,
in
> this CSV file there are many duplicated rows.
> I edited the file in my Linux system with the "uniq -u" command, and it
> worked somewhat fine, it eliminated some duplicated rows, originally the
> file had 24K rows, and now it has been reduced to 15k rows.
>
> Anyhow, there are still duplicated rows, and since this is a catalog, it
> should not have duplicated rows!!!
> Now the catalog has been has been loaded into the DB.
>
> How can I continue eliminating duplicated rows?
> As far as I remember the is a sentence in SQL to only show ONE row of
> duplicated rows, maybe if I do a select using this sentence and then put
> this new recordset in another table, it will work!!
>
> Any ideas?
>
> -----------------------
> Miguel Guirao Aguilera
> Logistica R8 TELCEL
> Tel. (999) 960.7994
>
>
> Este mensaje es exclusivamente para el uso de la persona o entidad a quien
esta dirigido; contiene informacion estrictamente confidencial y legalmente
protegida, cuya divulgacion es sancionada por la ley. Si el lector de este
mensaje no es a quien esta dirigido, ni se trata del empleado o agente
responsable de esta informacion, se le notifica por medio del presente, que
su reproduccion y distribucion, esta estrictamente prohibida. Si Usted
recibio este comunicado por error, favor de notificarlo inmediatamente al
remitente y destruir el mensaje. Todas las opiniones contenidas en este mail
son propias del autor del mensaje y no necesariamente coinciden con las de
Radiomovil Dipsa, S.A. de C.V. o alguna de sus empresas controladas,
controladoras, afiliadas y subsidiarias. Este mensaje intencionalmente no
contiene acentos.
>
> This message is for the sole use of the person or entity to whom it is
being sent.  Therefore, it contains strictly confidential and legally
protected material whose disclosure is subject to penalty by law.  If the
person reading this message is not the one to whom it is being sent and/or
is not an employee or the responsible agent for this information, this
person is herein notified that any unauthorized dissemination, distribution
or copying of the materials included in this facsimile is strictly
prohibited.  If you received this document by mistake please notify
immediately to the subscriber and destroy the message. Any opinions
contained in this e-mail are those of the author of the message and do not
necessarily coincide with those of Radiomovil Dipsa, S.A. de C.V. or any of
its control, controlled, affiliates and subsidiaries companies. No part of
this message or attachments may be used or reproduced in any manner
whatsoever.
>
>


--

------------------------------------------------------------
   Ade Olonoh - Independent Software Developer
   http://ade.olonoh.com | http://blog.olonoh.com
------------------------------------------------------------

--
PHP Database Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

-- 
PHP Database Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php


[Index of Archives]     [PHP Home]     [PHP Users]     [Postgresql Discussion]     [Kernel Newbies]     [Postgresql]     [Yosemite News]

  Powered by Linux