input: 
  def select_approved_rows():
      """
      Execute a SQL query to select all rows from a table where the 'status' is 'approved'.
      >>> # Assuming the database connection and cursor are properly set up.
      >>> rows = select_approved_rows()
      >>> rows  # This should return a list of rows where status is '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()