2011-03-01 22:16:51 CET LOG:  statement: INSERT INTO cost(airline, flightnum, required_chutes, preferred_chutes, opening_before_std, closing_before_std, number_of_chutes)                                                  
                VALUES(E'2N_', NULL, NULL, NULL, 150, 15, 1)                                                  
2011-03-01 22:16:51 CET ERROR:  null value in column "flightnum" violates not-null constraint                 
2011-03-01 22:16:51 CET STATEMENT:  INSERT INTO cost(airline, flightnum, required_chutes, preferred_chutes, opening_before_std, closing_before_std, number_of_chutes)                                                       
                VALUES(E'2N_', NULL, NULL, NULL, 150, 15, 1)