LINQ TO SQL 实现无限递归查询(转，待验证)
--构造测试数据： 只作演示用CREATE TABLE [dbo].[Tim_LinqTable]([Id] int PRIMARY KEY IDENTITY(1,1) NOT NULL,[Name] [varchar](50) NOT NULL,[Parent] int NOT NULL,)GOINSERT INTO [Tim_LinqTable] SELECT 'A',0 UNION ALLSELECT 'A1',1 UNION ALLSELECT 'A2',1 UNION ALLSELECT 'B1',2 UNION ALL
