CREATE TABLE Staff (nickname VARCHAR2, first_name VARCHAR2, last_name VARCHAR2)

What is the nickname of staff with first name as Janessa and last name as Sawayn?
SELECT nickname FROM Staff WHERE first_name = "Janessa" AND last_name = "Sawayn"
SELECT "nickname" FROM "Staff" WHERE "Janessa" = "first_name" AND "Sawayn" = "last_name"