select res.*,pa.proc_inst_id,pa.assignee,pa.assignee_name,pa.main_title,pa.flow_branch_id,pa.task_name,pa.agree,pa.flow_last_time,pa.comment_msg,pa.proc_def_id,pa.flow_state from XM.xm_task res left join XM.xm_task_process_approva pa on res.id=pa.xm_task_id and res.biz_proc_inst_id=pa.proc_inst_id