The CData Excel Add-In for Sage 200 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 b.Id, b.Code, c.Id, c.Name FROM Banks b INNER JOIN Currencies c ON b.AccountCurrencyId = c.Id

Left Join

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

 SELECT b.Id, b.Code, c.Id, c.Name FROM Banks b LEFT JOIN Currencies c ON b.AccountCurrencyId = c.Id