mysql遞歸查詢組織機構

父子查詢： 根據父 id 查詢下面所有子節點數據；子父查詢： 根據子 id 查詢上面所有父節點數據

創建表：

DROP TABLE IF EXISTS vrv_org_tab;
CREATE TABLE vrv_org_tab (
id bigint(8) NOT NULL AUTO_INCREMENT,
org_name varchar(50) NOT NULL,
org_level int(4) NOT NULL DEFAULT '0',
org_parent_id bigint(8) NOT NULL DEFAULT '0',
PRIMARY KEY (id),
UNIQUE KEY unique_org_name (org_name)
) ENGINE=InnoDB AUTO_INCREMENT=18 DEFAULT CHARSET=utf8;

添加數據：

INSERT INTO vrv_org_tab VALUES ('1', '北信源', '1', '0');
INSERT INTO vrv_org_tab VALUES ('2', '北京', '2', '1');
INSERT INTO vrv_org_tab VALUES ('3', '南京', '2', '1');
INSERT INTO vrv_org_tab VALUES ('4', '武漢', '2', '1');
INSERT INTO vrv_org_tab VALUES ('5', '上海', '2', '1');
INSERT INTO vrv_org_tab VALUES ('6', '北京研發中心', '3', '2');
INSERT INTO vrv_org_tab VALUES ('7', '南京研發中心', '3', '3');
INSERT INTO vrv_org_tab VALUES ('8', '武漢研發中心', '3', '4');
INSERT INTO vrv_org_tab VALUES ('9', '上海研發中心', '3', '5');
INSERT INTO vrv_org_tab VALUES ('10', '北京EMM項目組', '4', '6');
INSERT INTO vrv_org_tab VALUES ('11', '北京linkdd項目組', '4', '6');
INSERT INTO vrv_org_tab VALUES ('12', '南京EMM項目組', '4', '7');
INSERT INTO vrv_org_tab VALUES ('13', '南京linkdd項目組', '4', '7');
INSERT INTO vrv_org_tab VALUES ('14', '武漢EMM項目組', '4', '8');
INSERT INTO vrv_org_tab VALUES ('15', '武漢linkdd項目組', '4', '8');
INSERT INTO vrv_org_tab VALUES ('16', '上海EMM項目組', '4', '9');
INSERT INTO vrv_org_tab VALUES ('17', '上海linkdd項目組', '4', '9');

執行 select * from vrv_org_tab：

 

 

 

1.根據父id遞歸查詢所有子節點

創建函數：

create function getChildrenOrg(orgid INT)
returns varchar(4000)
BEGIN
DECLARE oTemp VARCHAR(4000);
DECLARE oTempChild VARCHAR(4000);
 
SET oTemp = '';
SET oTempChild = CAST(orgid AS CHAR);
 
WHILE oTempChild IS NOT NULL
DO
SET oTemp = CONCAT(oTemp,',',oTempChild);
SELECT GROUP_CONCAT(id) INTO oTempChild FROM vrv_org_tab WHERE FIND_IN_SET(org_parent_id,oTempChild) > 0;
END WHILE;
RETURN oTemp;
END

根據函數查詢：

1.查詢組織機構為1的下面所有組織機構
select * from vrv_org_tab where FIND_IN_SET(id,getChildrenOrg(1));

2.查詢組織機構為2的下面所有組織機構
select * from vrv_org_tab where FIND_IN_SET(id,getChildrenOrg(2));

3.查詢組織機構為6的下面所有組織機構
select * from vrv_org_tab where FIND_IN_SET(id,getChildrenOrg(6));

 

2.根據子id遞歸查詢所有父節點

創建函數(這里把10000換成id就行了)：

SELECT id,org_name,org_level,org_parent_id
    FROM ( 
        SELECT 
                @r AS _id, 
                (SELECT @r := org_parent_id FROM vrv_org_tab WHERE id = _id) AS parent_id, 
                 @l := @l + 1 AS lvl 
        FROM 
                (SELECT @r := 10000, @l := 0) vars, 
                vrv_org_tab h 
        WHERE @r <> 0) T1 
    JOIN vrv_org_tab T2 
    ON T1._id = T2.id
ORDER BY id;

執行sql：

 

 

 

 

 

 

 3.根據組織機構名稱模糊查詢所有父節點：

創建函數：

CREATE FUNCTION getParentOrgByOrgName(orgName VARCHAR(20))
RETURNS VARCHAR(4000)
BEGIN
    DECLARE sPid VARCHAR(1000);
    DECLARE sPidTemp VARCHAR(1000);
    DECLARE pid VARCHAR(1000);
    DECLARE count INT DEFAULT 0;
    DECLARE allpid VARCHAR(4000);
    
    SET sPidTemp = '';
    SELECT GROUP_CONCAT(DISTINCT(CAST(id AS CHAR))) INTO sPid 
    FROM vrv_org_tab WHERE org_name LIKE CONCAT('%',orgName,'%');
    
    SET allpid = '';
WHILE count = 0
DO
IF sPid IS NULL THEN
SET allpid = '-1';
SET count = 1;
ELSE
    SET pid = SUBSTRING_INDEX(sPid,',',1);
    SET sPidTemp = CONCAT(sPidTemp,',',pid);
    IF LENGTH(pid) = LENGTH(sPid) THEN
        SET count = 1;
        SET sPid = SUBSTRING(sPid FROM LENGTH(SUBSTRING_INDEX(sPid,',',1)) FOR LENGTH(sPid)+1);
    ELSE
        SET sPid = SUBSTRING(sPid FROM LENGTH(SUBSTRING_INDEX(sPid,',',1))+2 FOR LENGTH(sPid)+1);
    END IF;
    SELECT GROUP_CONCAT(CAST(id AS CHAR)) INTO sPidTemp
            FROM ( 
                    SELECT 
                            @r AS _id, 
                            (SELECT @r := org_parent_id FROM vrv_org_tab WHERE id = _id) AS parent_id, 
                            @l := @l + 1 AS lvl 
                    FROM 
                            (SELECT @r := pid, @l := 0) vars, 
                            vrv_org_tab h 
                    WHERE @r <> 0) T1 
            JOIN vrv_org_tab T2 
            ON T1._id = T2.id;
    SET allpid = CONCAT_WS(',',pid,sPidTemp,allpid);
END IF;
END WHILE;
RETURN allpid;
END

根據函數查詢：

模糊查詢所有父組織機構：
select * from vrv_org_tab where FIND_IN_SET(id,getParentOrgByOrgName('北京'));

 

轉載自：https://blog.csdn.net/lizhengyu891231/article/details/102532106