Load data and run q3
Each customer orders averagely 20 times
Add random_double
Last two digits of id mean prefecture

For selectivity of query 2:
* set first two digits of zipcode to last two digits of id
* customers order to branches in the same prefecture with a probability of ORDER_IN_SAME_PREFECTURE_RATE
Change PART_PRICE_MAX for selectivity of q1

4000 ->
3050
Add query 1