2.6,调用函数输出name路径
  -- fn_tree_pathname
  -- 调用函数输出name路径
  DELIMITER
  DROP FUNCTION IF EXISTS csdn.fn_tree_pathname
  CREATE FUNCTION csdn.fn_tree_pathname(nid INT,delimit VARCHAR(10)) RETURNS VARCHAR(2000) CHARSET utf8
  BEGIN
  DECLARE pathid VARCHAR(1000);
  SET pathid='';
  CALL pro_cre_pnlist(nid,delimit,pathid);
  RETURN pathid;
  END
  DELIMITER ;
  2.7,调用过程输出子节点
  -- pro_show_childLst
  DELIMITER
  -- 调用过程输出子节点
  DROP PROCEDURE IF EXISTS pro_show_childLst
  CREATE PROCEDURE pro_show_childLst(IN rootId INT)
  BEGIN
  DROP TEMPORARY TABLE IF EXISTS tmpLst;
  CREATE TEMPORARY TABLE IF NOT EXISTS tmpLst
  (sno INT PRIMARY KEY AUTO_INCREMENT,id INT,depth INT);
  CALL pro_cre_childlist(rootId,0);
  SELECT channel.id,CONCAT(SPACE(tmpLst.depth*2),'--',channel.cname) NAME,channel.parent_id,tmpLst.depth,fn_tree_path(channel.id,'/') path,fn_tree_pathname(channel.id,'/') pathname
  FROM tmpLst,channel WHERE tmpLst.id=channel.id ORDER BY tmpLst.sno;
  END
  2.8,调用过程输出父节点
  -- pro_show_parentLst
  DELIMITER
  -- 调用过程输出父节点
  DROP PROCEDURE IF EXISTS `pro_show_parentLst`
  CREATE PROCEDURE `pro_show_parentLst`(IN rootId INT)
  BEGIN
  DROP TEMPORARY TABLE IF EXISTS tmpLst;
  CREATE TEMPORARY TABLE IF NOT EXISTS tmpLst
  (sno INT PRIMARY KEY AUTO_INCREMENT,id INT,depth INT);
  CALL pro_cre_parentlist(rootId,0);
  SELECT channel.id,CONCAT(SPACE(tmpLst.depth*2),'--',channel.cname) NAME,channel.parent_id,tmpLst.depth,fn_tree_path(channel.id,'/') path,fn_tree_pathname(channel.id,'/') pathname
  FROM tmpLst,channel WHERE tmpLst.id=channel.id ORDER BY tmpLst.sno;
  END
  3,开始测试:
  3.1,从根节点开始显示,显示子节点集合:
  mysql> CALL pro_show_childLst(-1);
  +----+-----------------------+-----------+-------+-------------+----------------------------+
  | id | NAME                  | parent_id | depth | path        | pathname                   |
  +----+-----------------------+-----------+-------+-------------+----------------------------+
  | 13 |   --首页              |        -1 |     1 | -1/13       | 首页/                      |
  | 16 |     --左上幻灯片      |        13 |     2 | -1/13/16    | 首页/左上幻灯片/           |
  | 14 |   --TV580             |        -1 |     1 | -1/14       | TV580/                     |
  | 17 |     --帮忙            |        14 |     2 | -1/14/17    | TV580/帮忙/                |
  | 18 |       --栏目简介      |        17 |     3 | -1/14/17/18 | TV580/帮忙/栏目简介/       |
  | 15 |   --生活580           |        -1 |     1 | -1/15       | 生活580/                   |
  +----+-----------------------+-----------+-------+-------------+----------------------------+
  6 rows in set (0.05 sec)
  Query OK, 0 rows affected (0.05 sec)
  3.2,显示首页下面的子节点
  CALL pro_show_childLst(13);
  mysql> CALL pro_show_childLst(13);
  +----+---------------------+-----------+-------+----------+-------------------------+
  | id | NAME                | parent_id | depth | path     | pathname                |
  +----+---------------------+-----------+-------+----------+-------------------------+
  | 13 | --首页              |        -1 |     0 | -1/13    | 首页/                   |
  | 16 |   --左上幻灯片      |        13 |     1 | -1/13/16 | 首页/左上幻灯片/        |
  +----+---------------------+-----------+-------+----------+-------------------------+
  2 rows in set (0.02 sec)
  Query OK, 0 rows affected (0.02 sec)
  mysql>
  3.3,显示TV580下面的所有子节点
  CALL pro_show_childLst(14);
  mysql> CALL pro_show_childLst(14);
  +----+--------------------+-----------+-------+-------------+----------------------------+
  | id | NAME               | parent_id | depth | path        | pathname                   |
  +----+--------------------+-----------+-------+-------------+----------------------------+
  | 14 | --TV580            |        -1 |     0 | -1/14       | TV580/                     |
  | 17 |   --帮忙           |        14 |     1 | -1/14/17    | TV580/帮忙/                |
  | 18 |     --栏目简介     |        17 |     2 | -1/14/17/18 | TV580/帮忙/栏目简介/       |
  +----+--------------------+-----------+-------+-------------+----------------------------+
  3 rows in set (0.02 sec)
  Query OK, 0 rows affected (0.02 sec)
  mysql>
  3.4,“帮忙”节点有一个子节点,显示出来:
  CALL pro_show_childLst(17);
  mysql> CALL pro_show_childLst(17);
  +----+------------------+-----------+-------+-------------+----------------------------+
  | id | NAME             | parent_id | depth | path        | pathname                   |
  +----+------------------+-----------+-------+-------------+----------------------------+
  | 17 | --帮忙           |        14 |     0 | -1/14/17    | TV580/帮忙/                |
  | 18 |   --栏目简介     |        17 |     1 | -1/14/17/18 | TV580/帮忙/栏目简介/       |
  +----+------------------+-----------+-------+-------------+----------------------------+
  2 rows in set (0.03 sec)
  Query OK, 0 rows affected (0.03 sec)
  mysql>
  3.5,“栏目简介”没有子节点,所以只显示终节点:
  mysql> CALL pro_show_childLst(18);
  +----+----------------+-----------+-------+-------------+----------------------------+
  | id | NAME           | parent_id | depth | path        | pathname                   |
  +----+----------------+-----------+-------+-------------+----------------------------+
  | 18 | --栏目简介     |        17 |     0 | -1/14/17/18 | TV580/帮忙/栏目简介/       |
  +----+----------------+-----------+-------+-------------+----------------------------+
  1 row in set (0.36 sec)
  Query OK, 0 rows affected (0.36 sec)
  mysql>
  3.6,显示根节点的父节点
  CALL pro_show_parentLst(-1);
  mysql> CALL pro_show_parentLst(-1);
  Empty set (0.01 sec)
  Query OK, 0 rows affected (0.01 sec)
  mysql>
  3.7,显示“首页”的父节点
  CALL pro_show_parentLst(13);
  mysql> CALL pro_show_parentLst(13);
  +----+----------+-----------+-------+-------+----------+
  | id | NAME     | parent_id | depth | path  | pathname |
  +----+----------+-----------+-------+-------+----------+
  | 13 | --首页   |        -1 |     0 | -1/13 | 首页/    |
  +----+----------+-----------+-------+-------+----------+
  1 row in set (0.02 sec)
  Query OK, 0 rows affected (0.02 sec)
  mysql>
  3.8,显示“TV580”的父节点,parent_id为-1
  CALL pro_show_parentLst(14);
  mysql> CALL pro_show_parentLst(14);
  +----+---------+-----------+-------+-------+----------+
  | id | NAME    | parent_id | depth | path  | pathname |
  +----+---------+-----------+-------+-------+----------+
  | 14 | --TV580 |        -1 |     0 | -1/14 | TV580/   |
  +----+---------+-----------+-------+-------+----------+
  1 row in set (0.02 sec)
  Query OK, 0 rows affected (0.02 sec)
  3.9,显示“帮忙”节点的父节点
  mysql>
  CALL pro_show_parentLst(17);
  mysql> CALL pro_show_parentLst(17);
  +----+-----------+-----------+-------+----------+---------------+
  | id | NAME      | parent_id | depth | path     | pathname      |
  +----+-----------+-----------+-------+----------+---------------+
  | 17 | --帮忙    |        14 |     0 | -1/14/17 | TV580/帮忙/   |
  | 14 |   --TV580 |        -1 |     1 | -1/14    | TV580/        |
  +----+-----------+-----------+-------+----------+---------------+
  2 rows in set (0.02 sec)
  Query OK, 0 rows affected (0.02 sec)
  mysql>
  3.10,显示低层节点“栏目简介”的父节点
  CALL pro_show_parentLst(18);
  mysql> CALL pro_show_parentLst(18);
  +----+----------------+-----------+-------+-------------+----------------------------+
  | id | NAME           | parent_id | depth | path        | pathname                   |
  +----+----------------+-----------+-------+-------------+----------------------------+
  | 18 | --栏目简介     |        17 |     0 | -1/14/17/18 | TV580/帮忙/栏目简介/       |
  | 17 |   --帮忙       |        14 |     1 | -1/14/17    | TV580/帮忙/                |
  | 14 |     --TV580    |        -1 |     2 | -1/14       | TV580/                     |
  +----+----------------+-----------+-------+-------------+----------------------------+
  3 rows in set (0.02 sec)
  Query OK, 0 rows affected (0.02 sec)
  mysql>