查找担保圈-step6-对被包含过的组进行清理，只保留未被包含过的组

 USE [test]
 GO
 /****** Object:  StoredProcedure [dbo].[p04_get_groupno_cleared]    Script Date: 2019/7/8 15:03:02 ******/
 SET ANSI_NULLS ON
 GO
 SET QUOTED_IDENTIFIER ON
 GO
 ALTER PROC [dbo].[p04_get_groupno_cleared]
 AS
 --s4，对被包含过的组进行清理，只保留未被包含过的组
 BEGIN
     IF OBJECT_ID(N'dbo.t04_get_groupno_cleared') IS NOT NULL
         DROP TABLE dbo.t04_get_groupno_cleared;

     SELECT iinclude_groupno
     INTO dbo.t04_get_groupno_cleared
     FROM dbo.t03_get_groupno --只存在于包含列(include)，不存在与被包含列的(ibeincluded_groupno)的组号
     EXCEPT
     SELECT ibeincluded_groupno
     FROM dbo.t03_get_groupno;
     ALTER TABLE dbo.t04_get_groupno_cleared
     ALTER COLUMN iinclude_groupno INT NOT NULL;
     ALTER TABLE dbo.t04_get_groupno_cleared
     ADD
         PRIMARY KEY (iinclude_groupno);
 END;