Re: Performance issues while running select sql query

explain(analyze,buffers) SELECT serorgid,appname,sum(message_count) AS mtrc0,date_trunc('day', client_received_start_timestamp at time zone '+5:30:0')::timestamp without time zone AS time_unit FROM analytics."test.prod.fact" WHERE client_received_start_timestamp >= '2018-3-28 18:30:0' AND client_received_start_timestamp < '2018-4-11 18:30:0' AND  ((apiproxy in ('test-service' )  ) and (exchangeinstance != '(not set)'  ) and (devemail != 'test@example.com'  ) and (devemail != 'srk@example.com'  ) and (devemail != 'abc@example.com'  ) and (devemail != 'xyz@example.com'  ) and (apistatus = 'Success'  ) and (apiaction not in ('LRN','finder','ManuallySelect' )  ) and (appname not in ('Mobile Connect Developer Portal (Int(', 'MinskHBM', 'LondonHBM', 'SeoulHBM', 'MumbaiHBM', 'NVirginiaHBM','SPauloHBM', 'Mobile Connect HeartBeat Monitor', 'PDMAOpenSDKTest1', 'PDMAOpenSDKTest2', 'PDMASDKTest', 'APIHealth', 'A1qaDemoApp','test', 'dublin o2o test tool', 'Test from John do not provision' )  ) and (serorgid = 'aircel'  ))  GROUP BY serorgid,appname,time_unit ORDER BY time_unit DESC LIMIT 14400 OFFSET 0;