title: Total revenue by fiscal year and total revenue by last fiscal year
body: <p>I have an items table and a date table.
  The item table contains all sales data, date sold, price per unit, unit sold, total price.
  I have a date table also linked with date sold column on items table.</p>
  <p>I would like to calculate total fiscal revenue and fiscal year on year revenue.
  The fiscal year starts on 01 july and ends on 30 June.</p>
  <p>Regards,
  Alex</p>