Migrate data from old table to new table query - php

Question

Need a little help creating a query that takes the topic_title, and topic_content from mb_topics, and the post_content from the mb_posts table and then inserts the mb_topics.topic_title into the forum_topics.topic_title (table.field), mb_topics.topic_content and mb_posts.post_content into the forum_posts table.
Is it possible to use a single select query?
mb tables:
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;
forum tables:
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;
}

Answer 1

Something like this i guess would be ok?
<?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')");
}

Answer 2

This following query will fetch data from mb_posts and mb_topics tables and will insert into forum_posts table.
INSERT INTO forum_posts( post_content, post_topic, post_date, post_by )
SELECT MBP.post_content, MBT.id, NOW( ) , MBP.posted_by
FROM mb_posts AS MBP
LEFT JOIN mb_topics AS MBT ON MBP.topic_id = MBT.id
Similarly the following query will get post topics from old table (mb_topics) to new table (forum_topics).
INSERT INTO forum_topics( topic_title, topic_by)
SELECT MBT.topic_title, MBT.posted_by
FROM mb_posts AS MBP
LEFT JOIN mb_topics AS MBT ON MBP.topic_id = MBT.id

Answer 3

This would be 2 separate queries, because with one INSERT you can only insert into 1 table.