The CData FireDAC Components for UPS supports standard SQL joins like the following examples.
An inner join selects only rows from both tables that match the join condition:
SELECT p.ShipmentId, a.Email FROM Shipments p, Recipients a WHERE p.RecipientId = a.RecipientId
A left join selects all rows in the FROM table and only matching rows in the JOIN table:
SELECT p.ShipmentId, a.Email FROM Recipients a LEFT JOIN Shipments p ON p.RecipientId = a.RecipientId