Patent · US Active

Equi-joins between split tables

US10810170B2 · kind B2 · utility

0Cited by

10References

18Claims

0Family size

Assignee

SAP SE · DE

Inventors

Thomas Peh · Bukit Mertajam, MY
Holger Schwedes · Gondelsheim, DE
Wolfgang Stephan · Heidelberg, DE

Key dates

Filing date	Nov 13, 2017
Grant date	Oct 20, 2020
Priority date	—
Expiry date	Sep 27, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/278
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A join operation between split data tables includes providing reduction data from first partitions to each partition among second partitions. The reduction data serves to identify actual values in one of the second partitions that also occur in one of the first partitions. Global IDs are assigned. Translation lists including the global IDs are sent to the first partitions. Each first partition and each second partition create globalized lists which can then be combined to generate respective first and second compiled lists. The join operation can then be conducted on the first and second compiled lists.

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