The OneNote Adapter 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 Groups.displayName, Notebooks.displayName FROM Groups, Notebooks WHERE Groups.Id=Notebooks.GroupId

Left Join

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

SELECT Groups.displayName, Notebooks.displayName FROM Groups LEFT OUTER JOIN Notebooks ON Groups.Id=Notebooks.GroupId