Question

I have 2 tables: goods and cats_goods (relations table).

Goods: id, name.

Cats_goods: good_id, cat_id.

How to select ONLY goods which have BOTH cat_id=4 AND cat_id=24?

Have tried:

SELECT DISTINCT *
FROM `goods` AS `g`
JOIN `cats_goods` AS `cg` ON (`g`.`id` = `cg`.`good_id`)
WHERE (`cg`.`cat_id` = 24 AND `cg`.`cat_id` = 4)

Query gives 0 results!

UPD:
For each good there is 1 row in cats_goods with cat_id = 4 and one row in cats_goods with cat_id = 24. I only need to select those goods which have BOTH conditions match.

UPD2:

goods table structure:

CREATE TABLE IF NOT EXISTS `goods` (
  `id` int(11) NOT NULL auto_increment,
  `code` varchar(50) NOT NULL default '',
  `title` varchar(255) NOT NULL default '',
  `price` decimal(10,2) NOT NULL default '0.00',
  `file` varchar(50) NOT NULL default '',
  `preview` varchar(50) NOT NULL default '',
  `order` int(11) NOT NULL default '0',
  `selltype_id` int(11) NOT NULL default '0',
  `xml_date` varchar(50) NOT NULL default '',
  `invalid` tinyint(1) NOT NULL default '0',
  PRIMARY KEY  (`id`),
  KEY `order` (`order`),
  KEY `selltype_id` (`selltype_id`),
  KEY `code` (`code`),
  KEY `invalid` (`invalid`),
  KEY `xml_date` (`xml_date`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 AUTO_INCREMENT=5014 ;

goods table data:

(4964, '00000001731', 'gold 585', 10000.00, '', '', 0, 2, '', 0),
(4965, '00000001733', 'gold 585', 10000.00, '', '', 0, 2, '', 0),
(4966, '00000001769', 'gold 585', 8000.00, '', '', 0, 2, '', 0),
(4967, '00000001767', 'gold 585', 8000.00, '', '', 0, 2, '', 0),

cats_goods table structure:

CREATE TABLE IF NOT EXISTS `cats_goods` (
  `id` int(10) unsigned NOT NULL auto_increment,
  `good_id` int(10) unsigned NOT NULL default '0',
  `cat_id` int(10) unsigned NOT NULL default '0',
  PRIMARY KEY  (`id`),
  KEY `good_id` (`good_id`,`cat_id`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 AUTO_INCREMENT=37530 ;

cats_goods table data:

(37474, 4964, 24),
(37478, 4966, 24),
(37477, 4966, 4),
(37476, 4965, 24),
(37475, 4965, 4),
(37475, 4967, 4),

ONLY goods 4965 and 4966 must be selected.

Answer 1

Try

SELECT DISTINCT *
FROM `goods` AS `g`
JOIN `cats_goods` AS `cg1` ON (`g`.`id` = `cg1`.`good_id`)
JOIN `cats_goods` AS `cg2` ON (`g`.`id` = `cg2`.`good_id`)
WHERE (`cg1`.`cat_id` = 24 AND `cg2`.`cat_id` = 4)