Generalized Hash Team for Grouping/Aggregation
select c.City, sum(o.Value) from Customer c, Order o where c.C# = o.C# group by c.City
Agg
Bit-
maps
(BM)
Order
Customer
Ptn on C#
Ptn on C#
Ptn on City
Order
Customer
Ptn on City
Ptn on BM
Agg
Join and
grouping
team
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