-- 向下递归函数 
SELECT GROUP_CONCAT('''', pk_dept , '''')  FROM rzzxdb.bi_dept WHERE FIND_IN_SET(fr_pk_dept,'1070')>0;

update bi_dept set zt ='0' WHERE FIND_IN_SET(fr_pk_dept,'部门ID')>0;

DROP FUNCTION IF EXISTS queryChildrenAreaInfo; 
CREATE FUNCTION queryChildrenAreaInfo(areaId INT) -- 或者 areaId char 
RETURNS VARCHAR(4000) 
BEGIN 
DECLARE sTemp VARCHAR(4000); 
DECLARE sTempChd VARCHAR(4000); 
 
SET sTemp='$'; 
SET sTempChd = CAST(areaId AS CHAR); 
 
WHILE sTempChd IS NOT NULL DO 
SET sTemp= CONCAT(sTemp,',',sTempChd); 
SELECT GROUP_CONCAT(id) INTO sTempChd FROM t_areainfo WHERE FIND_IN_SET(parentId,sTempChd)>0; 
END WHILE; 
RETURN sTemp; 
END;

SELECT * FROM t_areainfo WHERE FIND_IN_SET(id,queryChildrenAreaInfo(4));

DROP FUNCTION IF EXISTS queryChildrenAreaInfo1; 
CREATE FUNCTION queryChildrenAreaInfo1(areaId INT) 
RETURNS VARCHAR(4000) 
BEGIN 
DECLARE sTemp VARCHAR(4000); 
DECLARE sTempChd VARCHAR(4000); 
 
SET sTemp='$'; 
SET sTempChd = CAST(areaId AS CHAR); 
SET sTemp = CONCAT(sTemp,',',sTempChd); 
 
SELECT parentId INTO sTempChd FROM t_areainfo WHERE id = sTempChd; 
WHILE sTempChd <> 0 DO 
SET sTemp = CONCAT(sTemp,',',sTempChd); 
SELECT parentId INTO sTempChd FROM t_areainfo WHERE id = sTempChd; 
END WHILE; 
RETURN sTemp; 
END;

SELECT * from t_areainfo where FIND_IN_SET(id,queryChildrenAreaInfo1(7));