Instruction
Great! Only the last exercise is left!
Exercise
For each row, show the Day, the Price on that day, the highest Price ever (column name HighestPrice), and the lowest Price ever (column name LowestPrice).

Great! Only the last exercise is left!
For each row, show the Day, the Price on that day, the highest Price ever (column name HighestPrice), and the lowest Price ever (column name LowestPrice).
