get result unique from query

business_id agent_id underwriter sub_total_premium 16 2 Chinjal 2000.00 21 2 Chinjal 750.00 504 2 Chinjal 1500.00 505 2 Chinjal 1500.00 564 2 Chinjal NULL 787 2 Ankit NULL 866 2 Ankit 1082.00 871 2 Ankit 1082.00 882 2 Ankit 2619.00 891 2 Ankit 1000.00 1002 2 Ankit 1386.00 1003 2 Ankit 64.00 1004 2 Ankit 6.00 1010 2 Ankit 750.00 1011 2 Ankit 0.00 1026 2 Ankit NULL 1027 2 Ankit 750.00 1064 2 Ankit 59.00 1079 2 Ankit 8500.00 885 4 Ankita 85.00 853 4 Ankita 1500.00 now i ...