The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 20, 2012
Filed:
Aug. 12, 2008
Hong Min, Poughkeepsie, NY (US);
Yefim Shuf, Ossining, NY (US);
Terence Patrick Purcell, Springfield, IL (US);
You-chin Fuh, San Jose, CA (US);
Chunfeng Pei, San Jose, CA (US);
Ou Jin, Morgan Hill, CA (US);
Hong Min, Poughkeepsie, NY (US);
Yefim Shuf, Ossining, NY (US);
Terence Patrick Purcell, Springfield, IL (US);
You-Chin Fuh, San Jose, CA (US);
Chunfeng Pei, San Jose, CA (US);
Ou Jin, Morgan Hill, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A database query is partitioned into an initial partition including a plurality of parallel groups, and is executed, via an execution plan, based on the initial partition. A sampling subset of data is identified from the plurality of parallel groups. Substantially in parallel with the executing of the query, the execution plan is executed on the sampling subset of data as a sampling thread. The execution plan is modified based on feedback from the execution of the execution plan on the sampling subset of data.