Hello I need your help : I have 3 table, 1 with all the Client (Code client(Key), Name, phone, , and postal code…) 1 other with the CA of the client on 4 years (Code client (key), postal code, CA…) 1 with the Region (Code postal (Key but only 2 digit...

Hello, I need your help with a formula. Im trying to get all the value from another table and next count how many they are for a year. I added a virtual column [Selection CP] (list) : =SELECT(Rapport Client[Date entretien :], LEFT([code postal :], 2)...