International Business Machines Corporation

Josep L Larriba-Pey

Calisto Paul Zuzarte

Hebert Walter Pereyra

Victor Muntes-Mulero

Josep Aguilar Saborit

A data processing system, and an article of manufacturing, join rows associated with a source table column with rows associated with a target table column. A source node and a target node contain the source and target tables, respectively. A reduced representation of selected rows associated with the source table column is generated, as is a representation of the target table column. A filtering module filters the generated reduced representation of selected rows associated with the source table column through the generated representation of the target table column, the filtered generated reduced representation of selected rows identifying source table rows that do not have to be joined with the target table. The rows associated with the source table column minus the filtered generated reduced representation of selected rows are joined to the rows associated with the target table column.

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Barcelona, Spain

Josep L Larriba-Pey