I'm currently learning SQL and am a begginer and need a bit of help on a topic.
I've got a database with 2 different tables and with a phone number as a key.
My issue is that on one of my table, the phone number is written with a "0" at the beggining and on the other one without it so I can't connect the two tables.
I put a screenshot of the column attached.
How can I add a "0" at the beggining of the column "inoming_number"?