11.5.1 使用 join 子句的内连接 如果你打算把一个巨大的序列连接到一个极小的序列上,应尽可能把小序列作为右边序列 class Program { static void Main(string[] args) { var query = from defect in SampleData.AllDefects join subscription in SampleData.AllSubscriptions on defect.Project equals subscription.Pr…
11.6.1 使用 group...by 子句进行分组 class Program { static void Main(string[] args) { var query = from defect in SampleData.AllDefects where defect.AssignedTo != null group defect by defect.AssignedTo; var query2 = SampleData.AllDefects .Where(defect => defe…