The CData ADO.NET Provider for Microsoft OneDrive 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 Files.name, SharedResources.shared_scope FROM Files, SharedResources WHERE Files.id=SharedResources.id

Left Join

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

SELECT Files.name, SharedResources.shared_scope FROM Files LEFT OUTER JOIN SharedResources ON Files.id=SharedResources.id