LinQでSQLに書き込む方法は？

Question

SELECT P.ProductId, P.ProductCategoryId, P.ParentProductCategoryId, 
     P.ProductName, PC.Name AS Category, P.Price, P.ProductYear 
FROM dbo.ProductCategory AS PC 
INNER JOIN 
    (SELECT dbo.ProductCategory.ParentProductCategoryId, 
      dbo.ProductCategory.ProductCategoryId, 
      dbo.ProductCategory.Name AS CategoryName, 
      dbo.Product.ProductId, 
      dbo.Product.Price, 
      dbo.Product.Name AS ProductName, 
      dbo.Product.ProductYear 
    FROM dbo.Product 
    INNER JOIN dbo.ProductCategory 
    ON dbo.ProductCategory.ProductCategoryId = dbo.Product.ProductCategoryId 
) AS P 
ON PC.ProductCategoryId = P.ParentProductCategoryId 

Answer 1

あなたが見れば私はあなたのデータベースのレイアウトについてはかなりよく分からないが、LINQ文は次のようになります...

YourDataContext db = new YourDataContext(); 

var query = 
    from p in db.Products 
    join pc in db.ProductCategories on p.ProductCategoryId equals pc.ProductCategoryId 
    select new 
    { 
     p.ProductId, 
     p.ProductCategoryId, 
     p.ParentProductCategoryId, 
     p.ProductName, 
     Category = pc.Name, 
     p.Price, 
     p.ProductYear 
    }