update @{tablename} set @{expire_tag} = 'T' where @{expire_tag} is null and @{date_to} > @{now} update @{positionHierarchyTable} md_position_hierarchy left join ( select position_id, group_concat(md_position_employee.remark) remark from @{positionEmployeeTable} md_position_employee group by position_id ) md_position_employee on md_position_employee.position_id = md_position_hierarchy.position_id set md_position_hierarchy.employee_name = md_position_employee.remark WHERE md_position_hierarchy.employee_name is null