CREATE EXTERNAL TABLE IF NOT EXISTS aws_logs.elb_log ( request_protocol string, request_timestamp string, elb_name string, request_ip string, request_port int, backend_ip string, backend_port int, request_processing_time double, backend_processing_time double, client_response_time double, elb_response_code string, backend_response_code string, received_bytes bigint, sent_bytes bigint, request_verb