The CData Cmdlets PowerShell Module for Zoho Inventory 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 c.FirstName, c.LastName, cp.Email, cp.Phone FROM ContactPersons cp INNER JOIN Contacts c ON cp.ContactId = c.Id

Left Join

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

 SELECT c.FirstName, o.LastName, cp.Email, cp.Phone FROM ContactPersons cp LEFT JOIN Contacts c ON cp.ContactId = c.Id