JOIN Queries
The CData Power BI Connector for xBase 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 a.Name, o.CloseDate FROM Accounts a, Opportunities o WHERE a.Id = o.AccountId
Left Join
A left join selects all rows in the FROM table and only matching rows in the JOIN table:
SELECT a.Name, c.FirstName, c.LastName FROM Accounts a LEFT JOIN Contacts c ON a.Id = c.AccountId