Patents by Inventor Chunyang Xia

Chunyang Xia has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Dynamic query optimization with pilot runs
    Patent number: 9836506
    Abstract: In one embodiment, a computer-implemented method includes selecting one or more sub-expressions of a query during compile time. One or more pilot runs are performed by one or more computer processors. The one or more pilot runs include a pilot run associated with each of one or more of the selected sub-expressions, and each pilot run includes at least partial execution of the associated selected sub-expression. The pilot runs are performed during execution time. Statistics are collected on the one or more pilot runs during performance of the one or more pilot runs. The query is optimized based at least in part on the statistics collected during the one or more pilot runs, where the optimization includes basing cardinality and cost estimates on the statistics collected during the pilot runs.
    Type: Grant
    Filed: June 11, 2014
    Date of Patent: December 5, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Andrey Balmin, Vuk Ercegovac, Jesse E. Jackson, Konstantinos Karanasos, Marcel Kutsch, Fatma Ozcan, Chunyang Xia
  • DYNAMIC QUERY OPTIMIZATION WITH PILOT RUNS
    Publication number: 20150363466
    Abstract: In one embodiment, a computer-implemented method includes selecting one or more sub-expressions of a query during compile time. One or more pilot runs are performed by one or more computer processors. The one or more pilot runs include a pilot run associated with each of one or more of the selected sub-expressions, and each pilot run includes at least partial execution of the associated selected sub-expression. The pilot runs are performed during execution time. Statistics are collected on the one or more pilot runs during performance of the one or more pilot runs. The query is optimized based at least in part on the statistics collected during the one or more pilot runs, where the optimization includes basing cardinality and cost estimates on the statistics collected during the pilot runs.
    Type: Application
    Filed: June 11, 2014
    Publication date: December 17, 2015
    Inventors: Andrey Balmin, Vuk Ercegovac, Jesse E. Jackson, Konstantinos Karanasos, Marcel Kutsch, Fatma Ozcan, Chunyang Xia