Sql Rails在查询后呈现JSON-问题：覆盖类似的SELECT字段名

下面是我进行的查询，然后根据结果呈现json。但是，具有相同名称的选择字段将被覆盖，例如，distairations.name和distairations.id将被restairations.name和restairations.id覆盖

我在SQLite中尝试了查询字符串，它返回了我需要查找的所有列，但它不能正确地作为JSON输出呈现。任何帮助都将不胜感激。多谢各位

这是我控制器中的rails代码

结果如下：

下面是相同的SQL命令：

下面是SQL结果

---

您可以使用SQL别名来解决此问题：

:select => 'meals.name as meal_name, meals.id as meal_id, sum(meal_ratings.rating) as meal_rating, restaurants.name as restaurant_name'

---

我现在有一个新问题。如果summeal_ratings.rating为空，则不返回进餐条目。我不知道为什么，因为我做的是左联，所以所有的膳食都应该存在。请让我碰巧知道。再次谢谢。好吧，那是另外一个问题。没有，因为你没有接受或投票支持任何答案。

[{"id":1,"name":"Parkside","sum(meal_ratings.rating)":2},
{"id":2,"name":"Parkside","sum(meal_ratings.rating)":1},
{"id":3,"name":"EVK","sum(meal_ratings.rating)":-1}]

SELECT meals.name, meals.id, sum(meal_ratings.rating), restaurants.name
FROM meals 
LEFT JOIN meal_ratings, restaurants ON meals.id = meal_ratings.meal_id AND restaurants.id = meals.restaurant_id
GROUP BY meal_ratings.meal_id 
ORDER BY meal_ratings.rating DESC

name|id|sum(meal_ratings.rating)|name
Pizza|1|2|Parkside
Pork Chops|2|1|Parkside
Spaghetti|3|-1|EVK

:select => 'meals.name as meal_name, meals.id as meal_id, sum(meal_ratings.rating) as meal_rating, restaurants.name as restaurant_name'