The CData Power BI Connector for HubSpot 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 p.Name, a.FullName FROM BlogPosts p, BlogAuthors a WHERE p.AuthorUserId = a.Id

Left Join

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

SELECT p.Name, a.FullName FROM BlogAuthors a LEFT JOIN BlogPosts p ON p.AuthorUserId = a.Id