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  • 有限层树形数据转换成无限层树形数据的示例存储过程(MS SQL 2K)

        --有限层树形数据转换成无限层树形数据的示例存储过程(MS SQL 2K)
    if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[P_Tree_Convert]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
    drop procedure [dbo].[P_Tree_Convert]
    GO

    SET QUOTED_IDENTIFIER ON
    GO
    SET ANSI_NULLS OFF
    GO

    CREATE   PROCEDURE P_Tree_Convert AS

    --有限层树形数据转换成无限层树形数据的示例存储过程

    --结果数据.
    CREATE TABLE [dbo].[#TREE_INFO] (
     [NODEID] [varchar](10) NULL , --树形数据节点代码
     [PARENTID] [varchar] (10) NULL ,--树形数据节点的父节点代码
     [NODENAME] [nvarchar] (255) COLLATE Chinese_PRC_CI_AS NULL ,--节点名称
     [ADDRESS] [nvarchar] (255) COLLATE Chinese_PRC_CI_AS NULL ,--节点的其它信息
     [ICON] [int] NULL --节点的图标编号
    ) ON [PRIMARY]

    --获取有限层树形数据节点数据
    SELECT * into #
    FROM (SELECT DPCODE1 AS node, DPNAME1 AS nodename
            FROM ora_CUSTDEPT
            WHERE (DPCODE2 = '00') AND (DPCODE3 = '000') AND (DPCODE4 = '000')
            UNION ALL
            SELECT DPCODE1 + DPCODE2 AS node, DPNAME2 AS nodename
            FROM ora_CUSTDEPT
            WHERE (DPCODE3 = '000') AND (DPCODE4 = '000') AND (DPCODE2 <> '00')
            UNION ALL
            SELECT DPCODE1 + DPCODE2 + DPCODE3 AS node,
                  DPNAME3 AS nodename
            FROM ora_CUSTDEPT
            WHERE (DPCODE3 <> '000') AND (DPCODE4 = '000') AND (DPCODE2 <> '00')
            UNION ALL
            SELECT DPCODE1 + DPCODE2 + DPCODE3 + DPCODE4 AS node,
                  DPNAME4 AS nodename
            FROM ora_CUSTDEPT
            WHERE (DPCODE3 <> '000') AND (DPCODE4 <> '000') AND (DPCODE2 <> '00'))
          tree_node
    ORDER BY node

    insert into  #TREE_INFO(NODEID, PARENTID, NODENAME)
    --从有限层树形数据节点数据获取其父节点数据,后插入结果表
    SELECT node, CASE WHEN len(ltrim(rtrim(node))) = 2 THEN '0' WHEN len(node)
          = 4 THEN substring(ltrim(rtrim(node)), 1, 2) WHEN len(node)
          = 7 THEN substring(ltrim(rtrim(node)), 1, 4) WHEN len(node)
          = 10 THEN substring(ltrim(rtrim(node)), 1, 7) END AS parentid,nodename
    FROM #

    select * from #TREE_INFO  --结果查看
     
    drop table #
    drop table #TREE_INFO

    GO
    SET QUOTED_IDENTIFIER OFF
    GO
    SET ANSI_NULLS ON
    GO

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  • 原文地址:https://www.cnblogs.com/cyz1980/p/739275.html
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