CREATE TABLE `think_user` (
 `id` int(11) unsigned NOT NULL AUTO_INCREMENT COMMENT 'ID编号',
 `name` varchar(20) NOT NULL COMMENT '帐户',
 `password` varchar(32) NOT NULL COMMENT '密码',
 `dept_id` smallint(6) unsigned NOT NULL,
 `status` tinyint(1) unsigned NOT NULL DEFAULT '1' COMMENT '开放状态',
 PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COMMENT='会员表' AUTO_INCREMENT=2 ;
INSERT INTO `think_user` (`id`, `name`, `password`, `dept_id`, `status`) VALUES
(1, 'zzguo28', '123456', 2, 1);

CREATE TABLE `think_user_info` (
 `user_id` int(11) NOT NULL COMMENT '用户id',
 `nick_name` varchar(30) NOT NULL COMMENT '用户昵称',
 `email` varchar(100) NOT NULL COMMENT '邮箱地址',
 `address` varchar(100) NOT NULL COMMENT '详细地址',
 `gender` tinyint(1) NOT NULL DEFAULT '0' COMMENT '性别',
 `mobile` varchar(100) NOT NULL COMMENT '手机号码',
 `telephone` varchar(100) NOT NULL COMMENT '电话号码',
 KEY `user_id` (`user_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC COMMENT='用户信息表';
INSERT INTO `think_user_info` (`user_id`, `nick_name`, `email`, `address`, `gender`, `mobile`, `telephone`) VALUES
(1, '国', 'zzguo28@163.com', 'TP路think街1.6号', 1, '12345678901', '123456');

CREATE TABLE `think_dept` (
 `id` smallint(3) NOT NULL AUTO_INCREMENT,
 `name` varchar(50) NOT NULL,
 PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=4 ;
INSERT INTO `think_dept` (`id`, `name`) VALUES
(1, '开发部'),
(2, '销售部'),
(3, '财务部');

 <?php
  class UserModel extends Model {
  }
 ?>

<?php
import('ViewModel');
class UserViewModel extends ViewModel{
  protected $viewFields = array(
    'User'   =>array('id','name','_as'=>'u','_type'=>'left'),
    'UserInfo' =>array('email','mobile','_as'=>'ui','_on'=>'ui.user_id=u.id'),
    'Dept'   =>array('name'=>'dept','_on'=>'u.dept_id=Dept.id'),
  );
}
?>

protected $viewFields = array(
    '表名'=>array('所需字段','_as'=>'别名定义','_on'=>'筛选条件','_type'=>'指定join类型，支持right,inner,left三种'),
);

<?php
class IndexAction extends Action{
  public function index(){
    $dao = D('UserView');
    $where['u.id'] = 1;
    dump($dao->where($where)->find());
    dump($dao->getLastSql());
  }
}
?>

array(1) {
 [0] => array(5) {
  ["id"] => string(1) "1"
  ["name"] => string(7) "zzguo28"
  ["email"] => string(17) "zzguo28@163.com"
  ["mobile"] => string(11) "12345678901"
  ["dept"] => string(9) "销售部"
 }
}

"SELECT u.id AS id,u.name AS name,ui.email AS email,ui.mobile AS mobile,Dept.name AS dept FROM think_user u LEFT JOIN think_user_info ui ON ui.user_id=u.id JOIN think_dept Dept ON u.dept_id=Dept.id WHERE ( u.id = 1 ) LIMIT 1 "