Set up operations in the Appengine data warehouse

Question

I suppose there is no good way to do this, but if you had to, how would you implement dial operations in the Appengine datastore?

For example, for two sets of integers, how would you store them in a data warehouse to get good performance for the intersection and with the exception of (all those elements from A that are not in B)?

Answer 1

There are no built-in operations with multiple operations in the storage API. I see you have two options:

• ( ). A, B . "smallish" .

• ( ) , , , . , , A B, , (A B). , A, , B. , - ( , A B). , B.

1 , , .

2 , , .