Rename field of document with N1QL?

i need to rename document called patients which has attibutes called LAST to LAST_NAME

AS IT IS RESERVED WORD IT GIVE ME ERROR

UPDATE patients
SET LAST = LAST_NAME
UNSET LAST
;

HOW CAN I DO THAT
THANKS

You don’t need to rename. Use back ticks when needed.

example:

SELECT `last`
 FROM patients WHERE `last` = "abc";
UPDATE patients AS p
SET p.last_name = p.`last`
UNSET p.`last`;