需要一些帮助来创建一个查询,该查询从 mb_topics
获取 topic_title
和 topic_content
,以及 post_content
从 mb_posts
表中插入 mb_topics.topic_title
到 forum_topics.topic_title
(table.field), mb_topics.topic_content
和 mb_posts.post_content
到 forum_posts
表中。
是否可以使用单个选择查询?
mb
表:
CREATE TABLE IF NOT EXISTS `mb_posts` (
`id` int(11) NOT NULL,
`posted_by` bigint(20) NOT NULL DEFAULT '0',
`topic_id` int(11) NOT NULL DEFAULT '0',
`post_content` text NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
CREATE TABLE IF NOT EXISTS `mb_topics` (
`id` int(11) NOT NULL,
`topic_title` varchar(75) NOT NULL DEFAULT '',
`posted_by` bigint(20) NOT NULL DEFAULT '0',
`topic_content` text NOT NULL
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
论坛
表格:
CREATE TABLE IF NOT EXISTS `forum_posts` (
`post_id` int(11) NOT NULL AUTO_INCREMENT,
`post_content` text NOT NULL,
`post_date` datetime NOT NULL,
`post_topic` int(11) NOT NULL,
`post_by` int(11) unsigned NOT NULL
PRIMARY KEY (`post_id`),
KEY `post_topic` (`post_topic`),
KEY `post_by` (`post_by`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;
CREATE TABLE IF NOT EXISTS `forum_topics` (
`topic_id` int(11) NOT NULL AUTO_INCREMENT,
`topic_title` varchar(150) NOT NULL,
`topic_by` int(11) unsigned NOT NULL
PRIMARY KEY (`topic_id`),
KEY `topic_by` (`topic_by`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1 ;
PHP:
$get_old_data_query=mysql_query('SELECT `title`, `content` FROM `mb_topics`');
while($old_data=mysql_fetch_assoc($get_old_data_query))
{
$old_data_array[]=$old_data;
}
最佳答案
我想像这样的东西可以吗?
<?php
$Old = mysql_query("SELECT * FROM Table WHERE Name = 'Name'");
while(mysql_fetch_array($Old)){
$Data = mysql_fetch_array($Old);
$Old1 = $Data['Name'];
mysql_query("INSERT INTO NewTable (Name) VALUES ('$Old1')");
}
关于php - 迁移旧表数据到新表查询,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/32468873/