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我是MySQL的初学者,试图在MySQL中创建连接查询。在MySQL中连接不起作用
我的第一个SQL查询,如下它显示2点票,并张贴
SELECT votes, post
FROM `wp_votes` where votes!=''
GROUP BY votes,post asc LIMIT 0 , 30
**第二个表是其中职位**
SELECT *
FROM `wp_posts`
LIMIT 0 , 30
我要做的就是创建一个连接,以便它显示来自wp_posts表的所有记录WHERE wp_post.ID = wp_votes.post,还必须检查是否wp_votes.votes!=''
我试过以下,但我坚持它下面
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` longtext 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=4570 ;
--
-- Table structure for table `wp_votes`
--
CREATE TABLE IF NOT EXISTS `wp_votes` (
`ID` int(11) NOT NULL auto_increment,
`post` int(11) NOT NULL,
`votes` text NOT NULL,
`guests` text NOT NULL,
`usersinks` text NOT NULL,
`guestsinks` text NOT NULL,
PRIMARY KEY (`ID`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1052 ;
您需要发布Ť能够结构。 – Ghigo 2013-03-07 14:16:16
不能,你只是添加Where条件到你现有的查询? – DevelopmentIsMyPassion 2013-03-07 14:17:45
@Ghigo我添加了表结构 – user580950 2013-03-07 14:27:25