Patent · US Active

Calculating count distinct using vertical unions

US9305065B2 · kind B2 · utility

1Cited by

2References

13Claims

0Family size

Assignee

SAP SE · DE

Inventors

Christoph Weyerhaeuser · Leimen, DE
Tobias Mindnich · Walldorf, DE
Daniel Baeumges · Viersen, DE
Gerrit Simon Kazmaier · Heidelberg, DE

Key dates

Filing date	Apr 26, 2012
Grant date	Apr 5, 2016
Priority date	—
Expiry date	Jul 15, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/24524
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A query statement is received that specifies a count distinct. Thereafter, a data flow graph that comprises a plurality of nodes for executing the query is generated. The nodes provide aggregation operations, sorting of results on join attributes and vertically appending columns of count distinct results with intermediate results from at least one of the aggregation operations. Thereafter, execution of the query is initiated using the data flow graph. Related apparatus, systems, techniques and articles are also described.

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