thinkPHP多表联合查询

1、原生查询示例：

1	$Model = new Model();

2	$sql = "select a.id,a.title,b.content from think_test1 as a, think_test2 as b where a.id=b.id ".$map." order by a.id ".$sort." limit ".$p->firstRow.",".$p->listRows;

3	$voList = $Model->query($sql);

2、join()方法示例：

1	$user = new Model("user");

2	$list = $user->join("RIGHT JOIN user_profile ON user_stats.id = user_profile.typeid" );

3、table()方法示例：

1	$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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