Patent · US Active

Query plan execution by implementation of plan operations forming a join graph

US7461057B2 · kind B2 · utility

11Cited by

3References

4Claims

0Family size

Assignee

SAP AG · DE

Inventors

Guenter Radestock · Karlsruhe, DE
Franz Faerber · Walldorf, DE
Christian M. Bartholomae · Oftersheim, DE

Key dates

Filing date	Dec 30, 2005
Grant date	Dec 2, 2008
Priority date	—
Expiry date	Aug 23, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S707/99938
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A system and method for executing a query plan are disclosed. In the system and method, a join graph is generated to represent the query plan. The join graph includes a set of plan operations that are to be executed for implementing the join graph. The query plan is received by a distributed network of a logical index server and one or more selected physical index servers. Each physical index server receives a portion of the plan operations, and determines what plan data is needed to execute the portion of the plan operations. A system and method includes a process for determining what plan data is needed from other physical index servers, or what plan data is needed by other physical index servers.

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