Method and apparatus for performing a join query in a...

Details Method and apparatus for performing a join query in a... Method and apparatus for performing a join query in a...

G - Physics

06

F

G06F 17/30 (2006.01) G06F 12/00 (2006.01)

Patent

CA 2232938

A computer implemented method for generating a response to a join. Two tables are divided into fragments. A join fragment map identifies, for each respective fragment from the first table, the fragments from the second table which contain a record that satisfies the join predicate with a record from the respective fragment from the first table. The map is used to eliminate fragments which cannot satisfy the join predicate.

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