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:
Jan. 07, 2020
Filed:
Dec. 19, 2014
Applicant:
Hewlett Packard Enterprise Development Lp, Houston, TX (US);
Inventors:
Roger Mitchell, Austin, TX (US);
Renu Varshneya, Cupertino, CA (US);
Awny K. Al-Omari, Cedar Park, TX (US);
Assignee:
HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP, Houston, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 16/2453 (2019.01); G06F 16/242 (2019.01); G06F 16/2455 (2019.01);
U.S. Cl.
CPC ...
G06F 16/2433 (2019.01); G06F 16/2453 (2019.01); G06F 16/2455 (2019.01); G06F 16/24534 (2019.01);
Abstract
There is provided a computer-implemented method of optimizing a query. An exemplary method retrieves a subset of rows from a sample table based on a query for a table associated with the sample table. The query specifies the table. The sample table is generated in a previous optimization of the query. The sample table includes a scrambled, random selection of rows from the table. A cardinality of the table is determined based on the subset. A query plan is generated based on the query and the cardinality.