Patents by Inventor Tomasz K. Stradomski

Tomasz K. Stradomski 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).

  • Parallel preparation of a query execution plan in a massively parallel processing environment based on global and low-level statistics
    Patent number: 10157205
    Abstract: In an approach to preparing a query execution plan, a host node receives a query implicating one or more data tables. The host node broadcasts one or more implicated data tables to one or more processing nodes. The host node receives a set of node-specific query execution plans and execution cost estimates associated with each of the node-specific query execution plans, which have been prepared in parallel based on global statistics and node-specific low level statistics. The host node selects an optimal query execution plan based on minimized execution cost.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: December 18, 2018
    Assignee: International Business Machines Corporation
    Inventors: Lukasz Gaza, Artur M. Gruszecki, Tomasz Kazalski, Konrad K. Skibski, Tomasz K. Stradomski
  • PARALLEL PREPARATION OF A QUERY EXECUTION PLAN IN A MASSIVELY PARALLEL PROCESSING ENVIRONMENT BASED ON GLOBAL AND LOW-LEVEL STATISTICS
    Publication number: 20170147640
    Abstract: In an approach to preparing a query execution plan, a host node receives a query implicating one or more data tables. The host node broadcasts one or more implicated data tables to one or more processing nodes. The host node receives a set of node-specific query execution plans and execution cost estimates associated with each of the node-specific query execution plans, which have been prepared in parallel based on global statistics and node-specific low level statistics. The host node selects an optimal query execution plan based on minimized execution cost.
    Type: Application
    Filed: November 23, 2015
    Publication date: May 25, 2017
    Inventors: Lukasz Gaza, Artur M. Gruszecki, Tomasz Kazalski, Konrad K. Skibski, Tomasz K. Stradomski