Question

laravel 这个同样两张表取别名查询出错，怎么改呢

Answer 1

$res = DB::table('topics')->select('topics.*', 'b.username',
'b.avatar', 'c.username as rname', 'd.cname')
->where('topics.is_hidden', 0)
->leftJoin('users AS b', 'b.uid', '=', 'topics.uid')
->leftJoin('users AS c', 'c.uid', '=', 'topics.ruid')
->leftJoin('nodes AS d', 'd.node_id', '=', 'topics.node_id')
->orderBy('ord', 'desc')
->take($limit)->get();