Help with query (easy for experieced) needed.

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October 31st, 2003, 08:14 AM

tandelaf

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Help with query (easy for experieced) needed.

HI, all.
I am having a bad time figuring out a good query for what I want. Wich is, to obtain the JUST (one) the latest instance (from the date-type field) for each proveedor_id (provider). As a result I just need proveedor_id, orden_fecha. In plain eglish, it is the last time an order was placed to each provider.
I have already tried a reasonable amount of time

.
Please help... here´s the table structure:

Code:

CREATE TABLE `ordenes` (
  `orden_id` int(3) NOT NULL auto_increment,
  `orden_nombre` varchar(25) NOT NULL default '',
  `orden_fecha` date NOT NULL default '0000-00-00',
  `orden_comentario_texto` text NOT NULL,
  `proveedor_id` int(3) NOT NULL default '0',
  `status_orden_id` int(4) default '1',
  PRIMARY KEY  (`orden_id`)
) TYPE=MyISAM AUTO_INCREMENT=6 ;

Thanks in advance.

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October 31st, 2003, 10:25 AM

swampBoogie

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http://www.mysql.com/doc/en/example...-group-row.html

October 31st, 2003, 03:17 PM

tandelaf

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Join Date: Sep 2003

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Nope.
But I solved it, this will do it:

Code:

SELECT proveedor_id, MAX(orden_fecha) FROM ordenes GROUP BY proveedor_id;

Thanks anyway for your time.

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