如何将SQL查询编写为命名范围？

如何将以下SQL查询转换为命名的\u范围

select users.*, sum(total_quantity * total_price) as points_spent 
from orders 
join users on users.id = orders.user_id 
where pay_type = 'points' 
group by user_id 
order by points_spent desc

谢谢

试试这个

class User < ActiveRecord::Base

    named_scope :your_name, 
                :select=>" users.*,sum(total_quantity * total_price) as points_spent",       
                :joins => :orders, 
                :conditions => ['pay_type = ?', 'points'], 
                :group ="user_id ", 
                :order=>'points_spent desc'

end

class用户“users.*，sum（总数量*总价格）作为花费的点数”，
：joins=>：订单，
：条件=>['pay_type=？'，'points']，
：group=“user\u id”，
：order=>“点数”
结束

试试这个

class User < ActiveRecord::Base

    named_scope :your_name, 
                :select=>" users.*,sum(total_quantity * total_price) as points_spent",       
                :joins => :orders, 
                :conditions => ['pay_type = ?', 'points'], 
                :group ="user_id ", 
                :order=>'points_spent desc'

end

class用户“users.*，sum（总数量*总价格）作为花费的点数”，
：joins=>：订单，
：条件=>['pay_type=？'，'points']，
：group=“user\u id”，
：order=>“点数”
结束