Patent 10430411 was granted and assigned to Micro Focus Limited on October, 2019 by the United States Patent and Trademark Office.
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.