select tt.team_name,fzr_name as bz_name,phone as bz_phone,tt.bid_name as project_name,tt.class_id, tt.status,day_num,ye_num,tti.job_risk_fc_level_num as risk_grade from t_work_team tt left join t_class_metting tm on tt.class_id = tm.class_id left join t_ticket_info tti on tti.id = tm.ticket_id