Here are my tables :
table1
id_town town_altitude_min town_altitude_max
1 NULL NULL
2 NULL NULL
...
table2
id_town id_zipcode
1 1100
2 1100
3 1110
...
And my csv :
id_zipcode;town_altitude_min;town_altitude_max
1100;20;350
1110;243;440
...
How can I update the table1 town_altitude_min and town_altitude_max with the data in the csv file ?
Thanks for all help :)