MySql 获取当前节点及递归所有上级节点

Posted 2020-08-16 F2BPM流程引擎

 

-- mysql 获取当前节点及递归所有上级节点 
-- 参数说明：resultField：查询返回字段，idd 要查询的资源ID值，idFieldName ID字段名，parentIdFieldName 上级ID字段名，tableName 表名，isContainMySelf 是否包含自己
DROP procedure IF EXISTS pro_getParentList;
create procedure pro_getParentList(in resultField varchar(4000),in myid varchar(100),in idFieldName varchar(100),in parentIdFieldName varchar(100),in tableName varchar(100),isContainMySelf int)
begin
	drop table if exists tmpParent;
	CREATE    TABLE tmpParent(temId varchar(100)) ;
	set @tempParentId=myid;
  set @myDoflag=1;
WHILE @myDoflag>0  do 
    set @ssss = CONCAT(‘ select ‘, parentIdFieldName, ‘, count(*) INTO  @tempParentId,@myDoflag from ‘,tableName ,‘ where ‘,idFieldName,‘=‘,‘‘‘‘,@tempParentId,‘‘‘‘);
		prepare strsql from @ssss;
		execute strsql;
    deallocate prepare strsql;     
    if(@myDoflag>0) THEN
	  set @insertSql = CONCAT(‘INSERT into tmpParent(temId) values (‘,"‘",@tempParentId,"‘",‘)‘);
	  prepare preSql1 from @insertSql;
	  execute preSql1;
    deallocate prepare preSql1; 
    end if;
end WHILE;
		 
		 IF (isContainMySelf=1) THEN
			INSERT into tmpParent(temId) values (myid); 
		 END IF; 

			SET @fieldSql=concat(‘ SELECT ‘,resultField);
			set @strsql = CONCAT(@fieldSql,‘ from ‘, tableName,‘ s ‘,‘ inner join  tmpParent t on t.temId=s.‘,idFieldName,‘  order by s.‘,idFieldName,‘  asc‘);
			prepare preSql from @strsql;
			execute preSql;
 
end