Patent · US Active

Cost heuristic for filter evaluation

US11138165B2 · kind B2 · utility

2Cited by

2References

18Claims

0Family size

Assignee

SAP SE · DE

Inventors

Oliver Horn · Munich, DE
Marius Eich · Neustadt, DE

Key dates

Filing date	Apr 4, 2019
Grant date	Oct 5, 2021
Priority date	—
Expiry date	Oct 10, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/24549
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method, a system, and a computer program product for executing a query. A query plan for execution of a query is generated. The query requires access to at least one table stored in a database system. The query includes one or more filter predicates. A filter predicate in the one or more filter predicates is selected. For the selected filter predicate, a plurality of cost function values associated executing a filter evaluation of the selected filter predicate are determined. Filter evaluation of the selected predicate is executed in accordance with at least one determined cost function value in the plurality of cost function values.

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