How to add the data in a existing column at a time

Question

how can i add the data of 'phone' column at a time for a table structure illustrated as below:

Answer 1

UPDATE table_name
SET phone = phone_number
WHERE ID = associated_id

When you select the phone number you want to change, remember also to specify the associated ID, otherwise you will change every phone number in the table.

Hope this is what you were looking for!