查找担保圈-step5-比较各组之间的成员，对组的包含性进行查询，具体见程序的注释-版本2

 USE [test]
 GO
 /****** Object:  StoredProcedure [dbo].[p03_get_groupno_e2]    Script Date: 2019/7/8 15:01:22 ******/
 SET ANSI_NULLS ON
 GO
 SET QUOTED_IDENTIFIER ON
 GO
 ALTER PROC [dbo].[p03_get_groupno_e2]
 AS
 BEGIN
     --s3，比较各组的成员，对组进行清理，具体见程序的注释
     SET STATISTICS TIME OFF;
     SET STATISTICS IO OFF;
     SET NOCOUNT ON;
     DECLARE @get_max_groupno INT = 0;
     SELECT @get_max_groupno = MAX(groupno)
     FROM dbo.t01_get_group_path;
     --预先清空dbo.t03_get_groupno表
     TRUNCATE TABLE dbo.t03_get_groupno;
     DECLARE @a INT = 1;
     WHILE @a <= @get_max_groupno --最大的分组编号
     BEGIN
         DECLARE @b INT = @a + 1;
         WHILE @b <= @get_max_groupno --最大的分组编号
         BEGIN
             DECLARE @p BIT = 0,
                     @q BIT = 0;
             IF EXISTS
             (
                 SELECT cust_name
                 FROM [dbo].[t02_get_group_member]
                 WHERE groupno = @a
                 EXCEPT
                 SELECT cust_name
                 FROM [dbo].[t02_get_group_member]
                 WHERE groupno = @b
             )
                 SET @p = 1;
             ELSE
                 SET @p = 0;

             IF EXISTS
             (
                 SELECT cust_name
                 FROM [dbo].[t02_get_group_member]
                 WHERE groupno = @b
                 EXCEPT
                 SELECT cust_name
                 FROM [dbo].[t02_get_group_member]
                 WHERE groupno = @a
             )
                 SET @q = 1;
             ELSE
                 SET @p = 0;
             IF (
                    @p >= 1
                    OR @p = 0
                )
                AND @q = 0 --第1,4种情况，集合a包括集合b的情况（a包括b但b不包括a，a=b两种情况，保留集合a的组号）
                 INSERT INTO dbo.t03_get_groupno
                 (
                     ctype,
                     iinclude_groupno,
                     ibeincluded_groupno
                 )
                 VALUES
                 ('1,4', @a, @b);
             ELSE IF @p = 0
                     AND @q >= 1 --第2种情况，集合b包括集合a，但集合a不包括集合b
                 INSERT INTO dbo.t03_get_groupno
                 (
                     ctype,
                     iinclude_groupno,
                     ibeincluded_groupno
                 )
                 VALUES
                 ('', @b, @a);

             ELSE IF @p >= 1 --第三种情况，a和b存在交集但不完全相同，或者a和b完全不同
                     AND @q >= 1
             BEGIN
                 INSERT INTO dbo.t03_get_groupno
                 (
                     ctype,
                     iinclude_groupno,
                     ibeincluded_groupno
                 )
                 VALUES
                 ('', @a, 0),
                 ('', @b, 0);
             END;
             SET @b = @b + 1;
         END;
         SET @a = @a + 1;
     END;
 END;