How to add the reason name to move order lines?

Hello,

This is simple for the SQL experts out there!  I want to add the reason_name from mtl_transaction_reasons to the sql below.  The field reason_id will join mtl_transaction_reasons and mtl_txn_request_lines_v. 

I want all the rows in mtl_txn_request_lines_v to be returned, no matter if reason_id is populated or null.  What is the proper approach?  A join, another condition, a sub-select?

SELECT request_number AS "Move Order Name", mtrl.creation_date, transaction_type_name, move_order_type_name, organization_code

FROM

  apps.mtl_txn_request_lines_v mtrl,