递归存储过程

Posted 2020-07-04 a963383404

select id from oc_groups where FIND_IN_SET(id, getChildLst(23));

select id from oc_groups where FIND_IN_SET(id, getChildLst(9))

CREATE FUNCTION `getChildLst`(rootId INT)
RETURNS varchar(1000)
BEGIN
DECLARE sTemp VARCHAR(1000);
DECLARE sTempChd VARCHAR(1000);
SET sTemp = ‘$‘;
SET sTempChd =cast(rootId as CHAR);
WHILE sTempChd is not null DO
SET sTemp = concat(sTemp,‘,‘,sTempChd);
SELECT group_concat(id) INTO sTempChd FROM oc_groups where FIND_IN_SET(parentid,sTempChd)>0;
END WHILE;
RETURN sTemp;
END

show function STATUS

drop function getChildLst

delete from oc_groups where id>9