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:
Oct. 01, 2019
Filed:
Apr. 30, 2013
Applicant:
Hewlett-packard Development Company, L.p., Houston, TX (US);
Inventors:
Choudur Lakshminarayan, Austin, TX (US);
Ramakumar Kosuru, Austin, TX (US);
QiFan Chen, Austin, TX (US);
Hansjorg Zeller, Los Altos, CA (US);
Assignee:
MICRO FOCUS LLC, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 17/30 (2006.01); G06F 17/18 (2006.01); G06F 16/2453 (2019.01); G06F 16/23 (2019.01); G06F 16/188 (2019.01);
U.S. Cl.
CPC ...
G06F 16/24542 (2019.01); G06F 16/196 (2019.01); G06F 16/23 (2019.01); G06F 17/18 (2013.01);
Abstract
Incrementally updating statistics includes sampling rows from a database column in a database to generate a first sample, sampling a subset of modified rows from the database column after generating the first sample to generate a second sample, determining whether distribution changes occurred to the database column based on the first and second samples, and updating a database statistic about the database column in response to determining that a distribution change exists.