Joining 2 tables

Joining 2 tables

Hi, Wonder if someone could help me, Im looking at joining two tables in Analytics to create a  new table, Im not an expert on SQL? 

I am wanting to use both of the historic data and current data tables to create a new table, with new values as shown in green - is this easy enough?

Historic DataCurrent DataNew Table
Paid DatePaid OnDate Paid
Order Line TotalGrand TotalTotal
Order StatusPayment StatusOverall