Aggregation Query w/ Linq to Entities
I'm trying to query the Northwind database relationship开发者_如何学Go between Categories and Products, where each category has multiple products...
Im looking for a query that will return the 1 category with the highest number of products in it.
This is as far as I've gotten
var results = from c in entities.CategorySet
orderby c.Products.Count descending
select new {
CategoryName = c.CategoryName,
ProductCount = c.Products.Count
};
var result = results.Take(1).First();
is there a more effective way?
What about this:
var result = (from c in entities.CategorySet
orderby c.Products.Count descending
select new {
CategoryName = c.CategoryName,
ProductCount = c.Products.Count
}).First();
Using this
var results = (from c in entities.CategorySet
orderby c.Products.Count descending
select new {c.CategoryName, ProductCount = c.Products.Count }).Take(1);
Is about the same as you would have done it using a Sql Statement. So I dont see a more effective way.
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