하위 쿼리를 사용하여 복잡한 SQL에서 LINQ로 변환

Question

이 표현식을 SQL에서 LINQ로 변환하려고 시도하지만 나에게 너무 어렵습니다. 어쩌면이 문제를 해결할 수 있습니다!

SELECT  TOP (2) RecipeID, UserID, Name, Servings, PreparationTime, TotalTime, DifficultyLevelID, CuisineID, DishID, MainIngredientID, PriceLevelID, FlavourID, Instructions, 
         Notes, Thumbnail, VideoLink 
FROM   dbo.Recipes 
WHERE  (RecipeID NOT IN 
          (SELECT DISTINCT Recipes_1.RecipeID 
          FROM   dbo.Allergies INNER JOIN 
                dbo.UsersAllergies ON dbo.Allergies.AllergyID = dbo.UsersAllergies.AllergyID INNER JOIN 
                dbo.IngredientsAllergies ON dbo.Allergies.AllergyID = dbo.IngredientsAllergies.AllergyID INNER JOIN 
                dbo.Ingredients ON dbo.IngredientsAllergies.IngredientID = dbo.Ingredients.IngredientID INNER JOIN 
                dbo.RecipesIngredients ON dbo.Ingredients.IngredientID = dbo.RecipesIngredients.IngredientID INNER JOIN 
                dbo.Recipes AS Recipes_1 ON dbo.RecipesIngredients.RecipeID = Recipes_1.RecipeID INNER JOIN 
                dbo.Users ON dbo.UsersAllergies.UserID = dbo.Users.UserID INNER JOIN 
                dbo.AllergyFactors ON dbo.IngredientsAllergies.AllergyFactorID = dbo.AllergyFactors.AllergyFactorID 
          WHERE  (dbo.Users.UserID = 3) AND (dbo.AllergyFactors.AllergyFactorID < 3))) 

Answer 1

당신이 이미 시도 것을 우리에게 보여 주었다, 그러나이 같은 Linq를 발현 당신에게 동일한 결과를 제공해야하는 경우 당신을 돕기 위해 쉬울 것,

var query = (from rec in context.Recipes 
      where !(from al in context.Allergies 
        from ua in context.UsersAllergies.Where(x => al.AllergyID == x.AllergyID) 
        from ia in context.IngredientsAllergies.Where(x => al.AllergyID == x.AllergyID) 
        from in in context.Ingredients.Where(x => ia.IngredientID == x.IngredientID) 
        from ri in context.RecipesIngredients.Where(x => in.IngredientID == x.IngredientID) 
        from re in context.Recipes.Where(x => ri.RecipeID == x.RecipeID) 
        from us in context.Users.Where(x => ua.UserID == x.UserID) 
        from af in context.AllergyFactors.Where(x => ia.AllergyFactorID == x.AllergyFactorID) 
        where us.UserID == 3 && af.AllergyFactorID < 3 
        select re.RecipeID) 
        .Distinct() 
        .Contains(rec.RecipeID) 
      select new 
      { 
       rec.RecipeID, 
       rec.UserID, 
       rec.Name, 
       rec.Servings, 
       rec.PreparationTime, 
       rec.TotalTime, 
       rec.DifficultyLevelID, 
       rec.CuisineID, 
       rec.DishID, 
       rec.MainIngredientID, 
       rec.PriceLevelID, 
       rec.FlavourID, 
       rec.Instructions, 
       rec.Notes, 
       rec.Thumbnail, 
       rec.VideoLink 
      }).Take(2);