select e.id,e.leader_id,e.link_man,e.link_phone,e.project_id,e.fax,e.transmit_date,e.transmit_person, e.del_flag,e.create_by,e.create_time,e.update_by,e.update_time,e.remark,u.name as leader_name from ass_estimate_task e left join sys_user u on u.id=e.leader_id select count(1) from ass_estimate_task where project_id=#{projectId} and del_flag=0 where e.project_id=#{projectId} and e.del_flag=0 limit 1 select * from ass_estimate_task where id=#{taskId}