thinkphp3.0 数据查询

$data =$user->field('name as uname')->select();
$data = $user->order('id desc')->select();
$data = $user->order('id ')->limit(5)->select();
$data = $user->page('1,10')->select();
$data = $user->group('active')->select();
$data = $user->group('active')->having('active=1')->select();
$data = $user->join('A on user.id=A.id')->select();
$data = $user->join('inner join A on user.id=A.id')->select();
$data = $user->join('right join A on user.id=A.id')->select();
$data = lock(true)->select();