ThinkPHP common methods of multi-table joint query_PHP tutorial

Related queries (i.e. multi-table joint queries) in ThinkPHP can use the table() method or the join method. The specific usage is as shown in the following example:

1. Native queryExample:

$Model = new Model();
$sql = 'select a.id,a.title,b.content from think_test1 as a, think_test2 as b where a.id=b.id '.$map.' order by a.id '.$sort.' limit '.$p->firstRow.','.$p->listRows;
$voList = $Model->query($sql);

2. join() method example:

$user = new Model('user');
$list = $user->join('RIGHT JOIN user_profile ON user_stats.id = user_profile.typeid' );

3. table() method example:

$list = $user->table('user_status stats, user_profile profile')->where('stats.id = profile.typeid')->field('stats.id as id, stats.display as display, profile.title as title,profile.content as content')->order('stats.id desc' )->select();

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