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;