对应SQL的Linq查询

下面是我的SQL语句，我无法转换为LINQ

select o.CustId,c.CustName,Count(o.CustId) as Total_Orders from Customer c 
inner join Orders o on c.CustId = o.CustId group by o.CustId,c.CustName

---

以下是LINQ查询（

db

is EntityFramework）

请尝试：

    var query = from c in Customer
            join o in Orders 
            on c.CustId 
            equals o.CustId 
            group x by new {o.CustId, c.CustName} 
            into g
                select new 
                {
                  g.Key.CustId,
                  g.Key.CustName,
                  Total_Orders = g.Count()
                };

---

像这样的怎么样

var query = db.Customers.Select(c => new 
                {
                    CustId = c.CustId,
                    CustName = c.CustName,
                    Total_Orders = db.Orders.Where(o => o.CustId == c.CustId).Count()
                }
            );

使用linq。

var query = db.Customers.Select(c => new 
                {
                    CustId = c.CustId,
                    CustName = c.CustName,
                    Total_Orders = db.Orders.Where(o => o.CustId == c.CustId).Count()
                }
            );

var query = from c in context.Customers
            select new
            {
                c.CustId,
                c.CustName,
                Orders = c.Orders.Count(),
            };