The CData Excel Add-In for Microsoft Dynamics NAV supports standard SQL joins like the following examples.

Inner Join

An inner join selects only rows from both tables that match the join condition:

SELECT Customer.Name, SalesOrder.Document_No FROM Customer, SalesOrder WHERE Customer.No=SalesOrder.Sell_to_Customer_No

Left Join

A left join selects all rows in the FROM table and only matching rows in the JOIN table:

SELECT Customer.Name, SalesOrder.Document_No FROM Customer LEFT OUTER JOIN SalesOrder ON Customer.No=SalesOrder.Sell_to_Customer_No