这对我有用，希望这对你也有用。它会给你一个记录集根到子为任何特定的菜单。根据您的需求更改字段名称。

SET @id:= '22';

SELECT Menu_Name, (@id:=Sub_Menu_ID ) as Sub_Menu_ID, Menu_ID 
FROM 
    ( SELECT Menu_ID, Menu_Name, Sub_Menu_ID 
      FROM menu 
      ORDER BY Sub_Menu_ID DESC
    ) AS aux_table 
    WHERE Menu_ID = @id
     ORDER BY Sub_Menu_ID;

对另一个问题也是这样吗

Mysql选择递归获取所有子级别

查询将是:

SELECT GROUP_CONCAT(lv SEPARATOR ',') FROM (
  SELECT @pv:=(
    SELECT GROUP_CONCAT(id SEPARATOR ',')
    FROM table WHERE parent_id IN (@pv)
  ) AS lv FROM table 
  JOIN
  (SELECT @pv:=1)tmp
  WHERE parent_id IN (@pv)
) a;

我能想到的最好方法是

使用沿袭存储\排序\跟踪树。这已经足够了，而且阅读速度比其他任何方法都要快数千倍。 它还允许即使DB将改变也保持该模式(因为任何DB将允许使用该模式) 使用为特定ID确定谱系的函数。 您可以随心所欲地使用它(在选择中，或在CUD操作中，甚至按作业)。

谱系方法描述。可以在任何地方找到，例如 这里或者这里。 至于功能，这就是我的灵感所在。

在最后-得到或多或少简单，相对快速，简单的解决方案。

函数的身体

-- --------------------------------------------------------------------------------
-- Routine DDL
-- Note: comments before and after the routine body will not be stored by the server
-- --------------------------------------------------------------------------------
DELIMITER $$

CREATE DEFINER=`root`@`localhost` FUNCTION `get_lineage`(the_id INT) RETURNS text CHARSET utf8
    READS SQL DATA
BEGIN

 DECLARE v_rec INT DEFAULT 0;

 DECLARE done INT DEFAULT FALSE;
 DECLARE v_res text DEFAULT '';
 DECLARE v_papa int;
 DECLARE v_papa_papa int DEFAULT -1;
 DECLARE csr CURSOR FOR 
  select _id,parent_id -- @n:=@n+1 as rownum,T1.* 
  from 
    (SELECT @r AS _id,
        (SELECT @r := table_parent_id FROM table WHERE table_id = _id) AS parent_id,
        @l := @l + 1 AS lvl
    FROM
        (SELECT @r := the_id, @l := 0,@n:=0) vars,
        table m
    WHERE @r <> 0
    ) T1
    where T1.parent_id is not null
 ORDER BY T1.lvl DESC;
 DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
    open csr;
    read_loop: LOOP
    fetch csr into v_papa,v_papa_papa;
        SET v_rec = v_rec+1;
        IF done THEN
            LEAVE read_loop;
        END IF;
        -- add first
        IF v_rec = 1 THEN
            SET v_res = v_papa_papa;
        END IF;
        SET v_res = CONCAT(v_res,'-',v_papa);
    END LOOP;
    close csr;
    return v_res;
END

然后你就

select get_lineage(the_id)

希望它能帮助到一些人:)

我向你提出了一个问题。这将给你递归类别与一个单一的查询:

SELECT id,NAME,'' AS subName,'' AS subsubName,'' AS subsubsubName FROM Table1 WHERE prent is NULL
UNION 
SELECT b.id,a.name,b.name AS subName,'' AS subsubName,'' AS subsubsubName FROM Table1 AS a LEFT JOIN Table1 AS b ON b.prent=a.id WHERE a.prent is NULL AND b.name IS NOT NULL 
UNION 
SELECT c.id,a.name,b.name AS subName,c.name AS subsubName,'' AS subsubsubName FROM Table1 AS a LEFT JOIN Table1 AS b ON b.prent=a.id LEFT JOIN Table1 AS c ON c.prent=b.id WHERE a.prent is NULL AND c.name IS NOT NULL 
UNION 
SELECT d.id,a.name,b.name AS subName,c.name AS subsubName,d.name AS subsubsubName FROM Table1 AS a LEFT JOIN Table1 AS b ON b.prent=a.id LEFT JOIN Table1 AS c ON c.prent=b.id LEFT JOIN Table1 AS d ON d.prent=c.id WHERE a.prent is NULL AND d.name IS NOT NULL 
ORDER BY NAME,subName,subsubName,subsubsubName

这是一把小提琴。

这对我有用，希望这对你也有用。它会给你一个记录集根到子为任何特定的菜单。根据您的需求更改字段名称。

SET @id:= '22';

SELECT Menu_Name, (@id:=Sub_Menu_ID ) as Sub_Menu_ID, Menu_ID 
FROM 
    ( SELECT Menu_ID, Menu_Name, Sub_Menu_ID 
      FROM menu 
      ORDER BY Sub_Menu_ID DESC
    ) AS aux_table 
    WHERE Menu_ID = @id
     ORDER BY Sub_Menu_ID;

试试这些:

表定义:

DROP TABLE IF EXISTS category;
CREATE TABLE category (
    id INT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(20),
    parent_id INT,
    CONSTRAINT fk_category_parent FOREIGN KEY (parent_id)
    REFERENCES category (id)
) engine=innodb;

实验行:

INSERT INTO category VALUES
(19, 'category1', NULL),
(20, 'category2', 19),
(21, 'category3', 20),
(22, 'category4', 21),
(23, 'categoryA', 19),
(24, 'categoryB', 23),
(25, 'categoryC', 23),
(26, 'categoryD', 24);

存储过程:

DROP PROCEDURE IF EXISTS getpath;
DELIMITER $$
CREATE PROCEDURE getpath(IN cat_id INT, OUT path TEXT)
BEGIN
    DECLARE catname VARCHAR(20);
    DECLARE temppath TEXT;
    DECLARE tempparent INT;
    SET max_sp_recursion_depth = 255;
    SELECT name, parent_id FROM category WHERE id=cat_id INTO catname, tempparent;
    IF tempparent IS NULL
    THEN
        SET path = catname;
    ELSE
        CALL getpath(tempparent, temppath);
        SET path = CONCAT(temppath, '/', catname);
    END IF;
END$$
DELIMITER ;

存储过程的包装器函数:

DROP FUNCTION IF EXISTS getpath;
DELIMITER $$
CREATE FUNCTION getpath(cat_id INT) RETURNS TEXT DETERMINISTIC
BEGIN
    DECLARE res TEXT;
    CALL getpath(cat_id, res);
    RETURN res;
END$$
DELIMITER ;

选择的例子:

SELECT id, name, getpath(id) AS path FROM category;

输出:

+----+-----------+-----------------------------------------+
| id | name      | path                                    |
+----+-----------+-----------------------------------------+
| 19 | category1 | category1                               |
| 20 | category2 | category1/category2                     |
| 21 | category3 | category1/category2/category3           |
| 22 | category4 | category1/category2/category3/category4 |
| 23 | categoryA | category1/categoryA                     |
| 24 | categoryB | category1/categoryA/categoryB           |
| 25 | categoryC | category1/categoryA/categoryC           |
| 26 | categoryD | category1/categoryA/categoryB/categoryD |
+----+-----------+-----------------------------------------+

过滤指定路径的行:

SELECT id, name, getpath(id) AS path FROM category HAVING path LIKE 'category1/category2%';

输出:

+----+-----------+-----------------------------------------+
| id | name      | path                                    |
+----+-----------+-----------------------------------------+
| 20 | category2 | category1/category2                     |
| 21 | category3 | category1/category2/category3           |
| 22 | category4 | category1/category2/category3/category4 |
+----+-----------+-----------------------------------------+