Patent · US Active

Data-partitioned secondary index (DPSI) partition level join

US9940359B2 · kind B2 · utility

0Cited by

21References

15Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Brian L. Baggett · Renton, US
Michael Chang · Saratoga, US
Shuanglin Guo · San Jose, US
Ou Jin · Fremont, US
Terence P. Purcell · Springfield, US

Key dates

Filing date	May 23, 2014
Grant date	Apr 10, 2018
Priority date	—
Expiry date	Jul 14, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/2282
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Provided are techniques for a Data-Partitioned Secondary Index (DPSI) partition level join. While using a Data-Partitioned Secondary Index (DPSI) to perform a join of an outer table and an inner table, a different task from multiple tasks is assigned to each partition of the inner table. With each task, a join is performed of the outer table and the assigned partition of the inner table using the DPSI to generate results. The results from each different task are merged.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.