mySQL MATCH для нескольких таблиц

Question

Aug 06, 2009, 09:28 PM

mySQL MATCH для нескольких таблиц

У меня есть набор из 4 таблиц, которые я хочу найти. У каждого есть полнотекстовый индекс. Может ли запрос использовать каждый индекс?

CREATE TABLE `categories` (
  `id` int(5) unsigned NOT NULL auto_increment,
  `display_order` int(5) unsigned default NULL,
  `name` varchar(64) default NULL,
  `last_modified` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
  PRIMARY KEY  (`id`),
  UNIQUE KEY `order` (`display_order`),
  FULLTEXT KEY `full_name` (`name`)
) ENGINE=MyISAM AUTO_INCREMENT=6 DEFAULT CHARSET=latin1;

CREATE TABLE `host_types` (
  `id` int(5) unsigned NOT NULL auto_increment,
  `category_id` int(5) unsigned default NULL,
  `display_order` int(5) unsigned default NULL,
  `name` varchar(64) default NULL,
  `last_modified` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
  PRIMARY KEY  (`id`),
  UNIQUE KEY `order` (`category_id`,`display_order`),
  FULLTEXT KEY `full_name` (`name`)
) ENGINE=MyISAM AUTO_INCREMENT=13 DEFAULT CHARSET=latin1;


CREATE TABLE `hosts` (
  `id` int(5) unsigned NOT NULL auto_increment,
  `host_id` int(5) unsigned default NULL,
  `display_order` int(5) unsigned default NULL,
  `name` varchar(64) default NULL,
  `last_modified` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
  PRIMARY KEY  (`id`),
  UNIQUE KEY `order` (`host_id`,`display_order`),
  FULLTEXT KEY `full_name` (`name`)
) ENGINE=MyISAM AUTO_INCREMENT=4 DEFAULT CHARSET=latin1;


CREATE TABLE `products` (
  `id` int(11) unsigned NOT NULL auto_increment,
  `host_id` int(5) unsigned default NULL,
  `display_order` int(5) unsigned default NULL,
  `uid` varchar(10) default NULL,
  `name` varchar(128) default NULL,
  `keywords` text,
  `description` text,
  `price` decimal(10,2) default NULL,
  `quantity` int(11) unsigned default NULL,
  `last_modified` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
  PRIMARY KEY  (`id`),
  FULLTEXT KEY `full_name` (`name`,`keywords`,`description`,`uid`)
) ENGINE=MyISAM AUTO_INCREMENT=14 DEFAULT CHARSET=latin1;

Вот мой запрос;

SELECT categories.name AS category, 
  categories.id AS category_id, 
  host_types.name AS host_type, 
  host_types.id AS host_type_id, 
  hosts.name AS host, 
  hosts.id AS host_id, 
  products.name as name, 
  products.id AS product_id, 
  products.keywords as keywords, 
  products.description AS description, 
  products.quantity AS quantity, 
  products.price AS price, 
  products.uid as catalogue, 
  MATCH(categories.name, host_types.name, hosts.name, products.name, 
      products.keywords, products.description, products.uid) 
      AGAINST('search term') as score 
FROM products 
LEFT JOIN hosts ON products.host_id = hosts.id 
LEFT JOIN host_types ON hosts.host_id = host_types.id 
LEFT JOIN categories ON host_types.category_id = categories.id 
WHERE MATCH(categories.name, host_types.name, hosts.name, products.name, 
            products.keywords, products.description, products.uid) 
      AGAINST('search term') 
ORDER BY score DESC;

Categories.name == FULLTEXT - 1host_types.name == FULLTEXT - 2hosts.name == FULLTEXT - 3products.name, products.keywords, products.description, products.uid == FULLTEXT - 4

Вот моя структура SQL, и я использовал вышеупомянутый запрос.

SELECT 
    categories.name AS category, 
    categories.id AS category_id, 
    host_types.name AS host_type, 
    host_types.id AS host_type_id, 
    hosts.name AS host, 
    hosts.id AS host_id, 
    products.name as name, 
    products.id AS product_id, 
    products.keywords as keywords, 
    products.description AS description, 
    products.quantity AS quantity, 
    products.price AS price, 
    products.uid as catalgue 
  MATCH(categories.name) AGAINST('search term') as cscore, 
  MATCH(host_types.name) AGAINST('search term') as htscore,
  MATCH(hosts.name) AGAINST('search term') as hscore,
  MATCH(products.name, products.keywords, products.description, products.uid)
    AGAINST('search term') as score
FROM products
LEFT JOIN hosts ON products.host_id = hosts.id
LEFT JOIN host_types ON hosts.host_id = host_types.id
LEFT JOIN categories ON host_types.category_id = categories.id
WHERE
  MATCH(categories.name) AGAINST('search term') OR
  MATCH(host_types.name) AGAINST('search term') OR
  MATCH(hosts.name) AGAINST('search term') OR
  MATCH(products.name, products.keywords, products.description, products.uid)
    AGAINST('search term')
ORDER BY score DESC



        CREATE TABLE `categories` (
  `id` int(5) unsigned NOT NULL auto_increment,
  `display_order` int(5) unsigned default NULL,
  `name` varchar(64) default NULL,
  `last_modified` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
  PRIMARY KEY  (`id`),
  UNIQUE KEY `order` (`display_order`),
  FULLTEXT KEY `full_name` (`name`)
) ENGINE=MyISAM AUTO_INCREMENT=6 DEFAULT CHARSET=latin1;

CREATE TABLE `host_types` (
  `id` int(5) unsigned NOT NULL auto_increment,
  `category_id` int(5) unsigned default NULL,
  `display_order` int(5) unsigned default NULL,
  `name` varchar(64) default NULL,
  `last_modified` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
  PRIMARY KEY  (`id`),
  UNIQUE KEY `order` (`category_id`,`display_order`),
  FULLTEXT KEY `full_name` (`name`)
) ENGINE=MyISAM AUTO_INCREMENT=13 DEFAULT CHARSET=latin1;


CREATE TABLE `hosts` (
  `id` int(5) unsigned NOT NULL auto_increment,
  `host_id` int(5) unsigned default NULL,
  `display_order` int(5) unsigned default NULL,
  `name` varchar(64) default NULL,
  `last_modified` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
  PRIMARY KEY  (`id`),
  UNIQUE KEY `order` (`host_id`,`display_order`),
  FULLTEXT KEY `full_name` (`name`)
) ENGINE=MyISAM AUTO_INCREMENT=4 DEFAULT CHARSET=latin1;


CREATE TABLE `products` (
  `id` int(11) unsigned NOT NULL auto_increment,
  `host_id` int(5) unsigned default NULL,
  `display_order` int(5) unsigned default NULL,
  `uid` varchar(10) default NULL,
  `name` varchar(128) default NULL,
  `keywords` text,
  `description` text,
  `price` decimal(10,2) default NULL,
  `quantity` int(11) unsigned default NULL,
  `last_modified` timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
  PRIMARY KEY  (`id`),
  FULLTEXT KEY `full_name` (`name`,`keywords`,`description`,`uid`)
) ENGINE=MyISAM AUTO_INCREMENT=14 DEFAULT CHARSET=latin1;

mySQL MATCH для нескольких таблиц

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mySQL MATCH для нескольких таблиц

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