The CData Excel Add-In for SAP ERP 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 MARA.MTART, MARC.WERKS FROM MARA, MARC WHERE MARA.MATNR = MARC.MATNR

Left Join

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

SELECT MARA.MTART, MARC.WERKS FROM MARA LEFT JOIN MARC ON MARA.MATNR = MARC.MATNR