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1

USE [test]
GO
/****** Object:  StoredProcedure [dbo].[p03_get_groupno_e1]    Script Date: 2019/7/8 14:59:39 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROC [dbo].[p03_get_groupno_e1]
AS
--s3，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
BEGIN
    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;
    TRUNCATE TABLE dbo.t03_get_groupno; --预先清空dbo.t03_get_groupno表
    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
            BEGIN
                IF EXISTS
                (
                    SELECT cust_name --第一种情况a包含b，且b不包含a，即a-b不为空，b-a为空
                    FROM [dbo].t02_get_group_member
                    WHERE groupno = @a
                    EXCEPT
                    SELECT cust_name
                    FROM [dbo].t02_get_group_member
                    WHERE groupno = @b
                )
                   AND NOT 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
                )
                BEGIN
                    INSERT INTO dbo.t03_get_groupno
                    (
                        ctype,
                        iinclude_groupno,
                        ibeincluded_groupno
                    )
                    VALUES
                    (1, @a, @b);
                END;
                ELSE IF EXISTS
                     (
                         SELECT cust_name --第二种情况b包含a，且a不包含b，即b-a不为空，a-b为空
                         FROM [dbo].t02_get_group_member
                         WHERE groupno = @b
                         EXCEPT
                         SELECT cust_name
                         FROM [dbo].t02_get_group_member
                         WHERE groupno = @a
                     )
                        AND NOT 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
                     )
                BEGIN
                    INSERT INTO dbo.t03_get_groupno
                    (
                        ctype,
                        iinclude_groupno,
                        ibeincluded_groupno
                    )
                    VALUES
                    (2, @b, @a);
                END;
                ELSE IF EXISTS
                     (
                         SELECT cust_name --第三种情况a不包含b，且b不包含a，即a-b不为空，b-a也不为空
                         FROM [dbo].t02_get_group_member
                         WHERE groupno = @a
                         EXCEPT
                         SELECT cust_name
                         FROM [dbo].t02_get_group_member
                         WHERE groupno = @b
                     )
                        AND 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
                     )
                BEGIN
                    INSERT INTO dbo.t03_get_groupno
                    (
                        ctype,
                        iinclude_groupno,
                        ibeincluded_groupno
                    )
                    VALUES
                    (3, @a, 0),
                    (3, @b, 0);
                END;
                ELSE IF NOT EXISTS
                     (
                         SELECT cust_name --第四种情况a包含b，且b包含a，即a和b是元素完全相同的组，a集合保留，b集合不保留或者a集合不保留，b集合保留
                         FROM [dbo].t02_get_group_member
                         WHERE groupno = @a
                         EXCEPT
                         SELECT cust_name
                         FROM [dbo].t02_get_group_member
                         WHERE groupno = @b
                     )
                        AND NOT 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
                     )
                BEGIN
                    INSERT INTO dbo.t03_get_groupno
                    (
                        ctype,
                        iinclude_groupno,
                        ibeincluded_groupno
                    )
                    VALUES
                    (4, @a, @b);
                END;
                SET @b = @b + 1;
            END;
        END;
        SET @a = @a + 1;
    END;
END;