Method and mechanism for partition pruning

Details Method and mechanism for partition pruning Method and mechanism for partition pruning

2005-11-15

2005-11-15

Ali, Mohammad (Department: 2167)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

06965891

ABSTRACT:
A method and system for performing partition pruning for queries that include a non-single table predicate is disclosed. According to an embodiment of the invention, this type of query is processed by performing a transformation of the query to include additional predicates comprising subqueries. The transformed query includes single table predicates on the partitioning column of the table being queried, based upon join predicates that exist in the original query.

REFERENCES:
patent: 5590319 (1996-12-01), Cohen et al.
patent: 5734893 (1998-03-01), Li et al.
patent: 5848408 (1998-12-01), Jakobsson et al.
patent: 6092062 (2000-07-01), Lohman et al.
patent: 6105020 (2000-08-01), Lindsay et al.

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