input: 
  def select_approved_rows():
      """Select all rows from a table where the 'status' column is 'approved'.
      >>> select_approved_rows()
      [('example_data_1', 'approved'), ('example_data_2', 'approved')]
      """
      sql = "SELECT * FROM table WHERE status = 'approved'"
      cur.execute(sql)
      return cur.fetchall()
  
output:     sql = "SELECT * FROM table WHERE status = 'approved'"
      cur.execute(sql)
      return cur.fetchall()