The CData ADO.NET Provider for Workday 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 Human_Resources.Workers.Worker_Reference_WID, Human_Resources.Workers.Legal_Name_Last_Name, Human_Resources.Workers_Address_Data.Municipality FROM Human_Resources.Workers INNER JOIN Human_Resources.Workers_Address_Data ON Human_Resources.Workers.Worker_Reference_WID = Human_Resources.Workers_Address_Data.Workers_Worker_Reference_WID

Left Join

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

 SELECT Human_Resources.Workers.Worker_Reference_WID, Human_Resources.Workers.Legal_Name_Last_Name, Human_Resources.Workers_Address_Data.Municipality FROM Human_Resources.Workers LEFT JOIN Human_Resources.Workers_Address_Data ON Human_Resources.Workers.Worker_Reference_WID = Human_Resources.Workers_Address_Data.Workers_Worker_Reference_WID