text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE Courses (author_id VARCHAR, course_name VARCHAR); CREATE TABLE Course_Authors_and_Tutors (login_name VARCHAR, author_id VARCHAR)
  ### Question:
  Find the login name of the course author that teaches the course with name "advanced database".
  ### Answer:
  SELECT T1.login_name FROM Course_Authors_and_Tutors AS T1 JOIN Courses AS T2 ON T1.author_id = T2.author_id WHERE T2.course_name = "advanced database"