我正在处理Wordpress,我正在尝试实现一个查询,该查询将返回下表:
+------------+------------+------------+
| name | posts | views |
|------------|------------|------------|
| politics | 10 | 311 |
|------------|------------|------------|
| economy | 20 | 764 |
|------------|------------|------------|
| gossip | 15 | 551 |
|------------|------------|------------|
| entertain | 2 | 117 |
|------------|------------|------------|
| fun | 7 | 249 |
+------------+------------+------------+
“视图”字段是每个类别中有多少个视图有文章,而“文章”字段是每个类别中有多少文章。
这个
views
表具有以下结构:
view_id (INT)
view_date (DATETIME)
view_post_id (INT)
我使用这个结构是因为我需要知道每次访问的日期。查看帖子时,会将其注册到此表中。
目前,我可以通过以下查询获取类别中的帖子数:
SELECT wp_terms.name,
count(wp_term_relationships.object_id) AS num_posts
FROM wp_term_taxonomy
JOIN wp_terms ON wp_term_taxonomy.term_id = wp_terms.term_id
JOIN wp_term_relationships ON wp_term_taxonomy.term_taxonomy_id = wp_term_relationships.term_taxonomy_id
JOIN wp_posts ON (wp_term_relationships.object_id = wp_posts.id AND wp_term_taxonomy.taxonomy='category' AND post_type='post' AND post_status='publish')
GROUP BY wp_terms.term_id
ORDER BY name ASC
我可以通过下面的查询得到每篇文章的浏览量。
SELECT view_post_id, COUNT(view_id) as total_views, ID, post_title FROM wp_views JOIN wp_posts ON (view_post_id = ID AND post_status = 'publish') GROUP BY view_post_id
但我不知道如何合并它们。我甚至不知道这是否是个好主意,因为查询可能非常繁重。
你建议使用两个查询吗?如果是这样,我怎么能加入第二个,因为这是我的第一个问题。
谢谢!
更新
这里是SQL转储。
CREATE TABLE IF NOT EXISTS `wp_posts` (
`ID` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
`post_author` bigint(20) unsigned NOT NULL DEFAULT '0',
`post_date` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
`post_date_gmt` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
`post_content` longtext NOT NULL,
`post_title` text NOT NULL,
`post_excerpt` text NOT NULL,
`post_status` varchar(20) NOT NULL DEFAULT 'publish',
`comment_status` varchar(20) NOT NULL DEFAULT 'open',
`ping_status` varchar(20) NOT NULL DEFAULT 'open',
`post_password` varchar(20) NOT NULL DEFAULT '',
`post_name` varchar(200) NOT NULL DEFAULT '',
`to_ping` text NOT NULL,
`pinged` text NOT NULL,
`post_modified` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
`post_modified_gmt` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
`post_content_filtered` text NOT NULL,
`post_parent` bigint(20) unsigned NOT NULL DEFAULT '0',
`guid` varchar(255) NOT NULL DEFAULT '',
`menu_order` int(11) NOT NULL DEFAULT '0',
`post_type` varchar(20) NOT NULL DEFAULT 'post',
`post_mime_type` varchar(100) NOT NULL DEFAULT '',
`comment_count` bigint(20) NOT NULL DEFAULT '0',
PRIMARY KEY (`ID`),
KEY `post_name` (`post_name`),
KEY `type_status_date` (`post_type`,`post_status`,`post_date`,`ID`),
KEY `post_parent` (`post_parent`),
KEY `post_author` (`post_author`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=14 ;
INSERT INTO `wp_posts` (`ID`, `post_author`, `post_date`, `post_date_gmt`, `post_content`, `post_title`, `post_excerpt`, `post_status`, `comment_status`, `ping_status`, `post_password`, `post_name`, `to_ping`, `pinged`, `post_modified`, `post_modified_gmt`, `post_content_filtered`, `post_parent`, `guid`, `menu_order`, `post_type`, `post_mime_type`, `comment_count`) VALUES
(5, 1, '2010-11-26 16:23:54', '2010-11-26 16:23:54', '', 'fun post #1', '', 'publish', 'open', 'open', '', 'fun-post-1', '', '', '2010-11-26 16:23:54', '2010-11-26 16:23:54', '', 0, 'http://devcake/?p=5', 0, 'post', '', 0),
(7, 1, '2010-11-26 16:24:09', '2010-11-26 16:24:09', '', 'entertainment & fun post', '', 'publish', 'open', 'open', '', 'entertainment-fun-post', '', '', '2010-11-26 16:24:09', '2010-11-26 16:24:09', '', 0, 'http://devcake/?p=7', 0, 'post', '', 0),
(9, 1, '2010-11-26 16:24:24', '2010-11-26 16:24:24', '', 'entertainment & politics', '', 'publish', 'open', 'open', '', 'entertainment-politics', '', '', '2010-11-26 16:24:24', '2010-11-26 16:24:24', '', 0, 'http://devcake/?p=9', 0, 'post', '', 0),
(11, 1, '2010-11-26 16:24:34', '2010-11-26 16:24:34', '', 'gossip', '', 'publish', 'open', 'open', '', 'gossip', '', '', '2010-11-26 16:24:35', '2010-11-26 16:24:35', '', 0, 'http://devcake/?p=11', 0, 'post', '', 0);
CREATE TABLE IF NOT EXISTS `wp_terms` (
`term_id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(200) NOT NULL DEFAULT '',
`slug` varchar(200) NOT NULL DEFAULT '',
`term_group` bigint(10) NOT NULL DEFAULT '0',
PRIMARY KEY (`term_id`),
UNIQUE KEY `slug` (`slug`),
KEY `name` (`name`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=8 ;
INSERT INTO `wp_terms` (`term_id`, `name`, `slug`, `term_group`) VALUES
(1, 'Uncategorized', 'uncategorized', 0),
(2, 'Blogroll', 'blogroll', 0),
(3, 'politics', 'politics', 0),
(4, 'economy', 'economy', 0),
(5, 'gossip', 'gossip', 0),
(6, 'entertainment', 'entertainment', 0),
(7, 'fun', 'fun', 0);
CREATE TABLE IF NOT EXISTS `wp_term_relationships` (
`object_id` bigint(20) unsigned NOT NULL DEFAULT '0',
`term_taxonomy_id` bigint(20) unsigned NOT NULL DEFAULT '0',
`term_order` int(11) NOT NULL DEFAULT '0',
PRIMARY KEY (`object_id`,`term_taxonomy_id`),
KEY `term_taxonomy_id` (`term_taxonomy_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
INSERT INTO `wp_term_relationships` (`object_id`, `term_taxonomy_id`, `term_order`) VALUES
(1, 2, 0),
(2, 2, 0),
(3, 2, 0),
(4, 2, 0),
(5, 2, 0),
(6, 2, 0),
(7, 2, 0),
(1, 1, 0),
(5, 7, 0),
(7, 7, 0),
(7, 6, 0),
(9, 6, 0),
(9, 3, 0),
(11, 5, 0);
CREATE TABLE IF NOT EXISTS `wp_term_taxonomy` (
`term_taxonomy_id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
`term_id` bigint(20) unsigned NOT NULL DEFAULT '0',
`taxonomy` varchar(32) NOT NULL DEFAULT '',
`description` longtext NOT NULL,
`parent` bigint(20) unsigned NOT NULL DEFAULT '0',
`count` bigint(20) NOT NULL DEFAULT '0',
PRIMARY KEY (`term_taxonomy_id`),
UNIQUE KEY `term_id_taxonomy` (`term_id`,`taxonomy`),
KEY `taxonomy` (`taxonomy`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=8 ;
INSERT INTO `wp_term_taxonomy` (`term_taxonomy_id`, `term_id`, `taxonomy`, `description`, `parent`, `count`) VALUES
(1, 1, 'category', '', 0, 0),
(2, 2, 'link_category', '', 0, 7),
(3, 3, 'category', '', 0, 1),
(4, 4, 'category', '', 0, 0),
(5, 5, 'category', '', 0, 1),
(6, 6, 'category', '', 0, 2),
(7, 7, 'category', '', 0, 2);
CREATE TABLE IF NOT EXISTS `wp_views` (
`view_id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`view_post_id` int(10) DEFAULT NULL,
`view_date` datetime DEFAULT NULL,
PRIMARY KEY (`view_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=11 ;
INSERT INTO `wp_views` (`view_id`, `view_post_id`, `view_date`) VALUES
(1, 11, '2010-11-26 16:28:52'),
(2, 9, '2010-11-26 16:28:56'),
(3, 7, '2010-11-26 16:31:54'),
(4, 7, '2010-11-26 16:31:55'),
(5, 7, '2010-11-26 16:31:56'),
(6, 5, '2010-11-26 16:31:58'),
(7, 5, '2010-11-26 16:31:59'),
(8, 5, '2010-11-26 16:31:59'),
(9, 5, '2010-11-26 16:32:00'),
(10, 5, '2010-11-26 16:32:00');
按类别计数(问题中的第一个查询)应该抛出如下内容:
+---------------+-----------+
| name | num_posts |
|---------------|-----------|
| entertainment | 2 |
|---------------|-----------|
| fun | 2 |
|---------------|-----------|
| gossip | 1 |
|---------------|-----------|
| politics | 1 |
+---------------+-----------+
视图计数应该返回如下内容
+---------------+-------------+----+--------------------------+
| view_post_id | total_views | ID | post_title |
|---------------|-------------|----|--------------------------|
| 5 | 5 | 5 | fun post #1 |
|---------------|-------------|----|--------------------------|
| 7 | 3 | 7 | entertainment & fun post |
|---------------|-------------|----|--------------------------|
| 9 | 1 | 9 | entertainment & politics |
|---------------|-------------|----|--------------------------|
| 11 | 1 | 11 | gossip |
+---------------+-------------+----+--------------------------+
我正在寻找的查询将返回如下内容:
+------------+------------+------------+
| name | posts | views |
|------------|------------|------------|
| politics | 1 | 1 |
|------------|------------|------------|
| gossip | 1 | 1 |
|------------|------------|------------|
| entertain | 2 | 4 |
|------------|------------|------------|
| fun | 2 | 8 |
+------------+------------+------------+
注意fun有两个帖子,一个有5个视图,一个有3个,这个类别总共有8个。
谢谢。