n_commande,date,n_client
1111,22/09/18,1343
2323,20/03/19,34
987,12/09/15,5565
454,08/07/14,2324
1324,01/02/17,4444
1567,05/12/18,2221
45,02/02/12,2454
123,04/11/13,5565
2122,12/02/19,3435
1989,04/12/18,1212