MYSQL, Copy selected fields from one table to another

Question

In MySQL, How do I copy a FIELD with all RECORDS from TABLE1 to TABLE2 which corresponds to a primary key ie: EMPLOYEE no.?

Answer 1

Insert into Delivery (DeliveredDate, appid, DownloadSize, UploadSize) select Delivered, Appid, DownloadSize,UploadSize from Delivery_Summary;