input: 
  def select_approved_rows():
      """Selects all rows from a table where the 'status' is 'approved'.
      >>> # Assuming the table has rows with the 'status' column: ['approved', 'pending', 'approved']
      >>> cur = MockCursor()  # Mocked for test purposes
      >>> cur.rows = [('approved',), ('pending',), ('approved',)]
      >>> select_approved_rows()
      [('approved',), ('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()