Patent · US Active

Incrementally updating statistics

US10430411B2 · kind B2 · utility

1Cited by

7References

15Claims

0Family size

Assignee

Micro Focus LLC · US

Inventors

Choudur Lakshminarayan · Austin, US
Ramakumar Kosuru · Austin, US
Qifan Chen · Newark, US
Hansjorg Zeller · Los Altos, US

Key dates

Filing date	Apr 30, 2013
Grant date	Oct 1, 2019
Priority date	—
Expiry date	Jun 25, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG06F17/18
WIPO fieldComputer technology
WIPO sectorElectrical engineering

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.

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