Patents by Inventor Peter Lysakovski

Peter Lysakovski 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).

  • Selectivity estimation of conjunctive predicates
    Patent number: 12105768
    Abstract: A system includes determination of a query comprising z predicates, determination of known selectivities of each of a set of conjuncts of the z predicates, and estimation of selectivities of all conjuncts of the z predicates based on the known selectivities and a recursive determination of Cx, where x represents selectivities of all complete conjuncts of the z predicates and C is a complete design matrix complete design matrix (ci,j)=1 if i?j, else 0, having indices [0, 2z?1].
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: October 1, 2024
    Assignee: SAP SE
    Inventors: Peter Lysakovski, Guido Moerkotte, Norman May, Diego Havenstein, Gabriele Steidl
  • SELECTIVITY ESTIMATION OF CONJUNCTIVE PREDICATES
    Publication number: 20220012302
    Abstract: A system includes determination of a query comprising z predicates, determination of known selectivities of each of a set of conjuncts of the z predicates, and estimation of selectivities of all conjuncts of the z predicates based on the known selectivities and a recursive determination of Cx, where x represents selectivities of all complete conjuncts of the z predicates and C is a complete design matrix complete design matrix (ci,j)=1 if i?j, else 0, having indices [0, 2z?1].
    Type: Application
    Filed: July 9, 2020
    Publication date: January 13, 2022
    Inventors: Peter Lysakovski, Guido Moerkotte, Norman May