[英]In the entity framework, how would you do an “IN” query on a joined table?
我是一名SQL迷,EF的語法對我來說並不直觀。
我有一個餐廳桌子和一個食物桌子。 我想要在字符串列表類別中包含食物類型的餐館和食物。 這是一些可以大致代表我想要的SQL。
SELECT r.*, f.*
FROM Restaurant R
JOIN food f on f.RestaurantID = r.RestaurantID
WHERE f.Type IN ("Awesome", "Good", "Burrito")
這是我想變成該SQL的代碼。
List<string> types = new List<string>() { "Awesome", "Good", "Burrito"};
var dbrestaurants = from d in db.Restaurants
.Include("Food")
//where Food.Categories.Contains(types)//what to put here?
select d;
嘗試
var restaurants = db.Restaurants.Where(r => types.Contains(r.Food.Type));
where Food.Categories.Any(c => types.Contains(c.Name))
嘗試這個:
var dbRestaurants =
from r in db.Restaurants
join f in db.Foods on r.RestaurantId equals f.RestaurantId
where types.Any(foodType => foodType == f.Type)
select r;
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