×

SCAN SHARING FOR QUERY PREDICATE EVALUATIONS IN COLUMN-BASED IN-MEMORY DATABASE SYSTEMS

  • US 20120084278A1
  • Filed: 09/30/2010
  • Published: 04/05/2012
  • Est. Priority Date: 09/30/2010
  • Status: Active Grant
First Claim
Patent Images

1. A method comprising:

  • obtaining a plurality of queries of an in-memory column-oriented database, each of said queries having at least one column predicate;

    determining, for each of said queries, which of a plurality of columns in said in-memory column-oriented database need to be scanned;

    grouping said plurality of queries into a plurality of scan groups, based at least in part on said determining step; and

    evaluating said column predicates for those of said queries in a given one of said scan groups in accordance with a scheduling scheme;

    wherein said grouping step and said scheduling scheme take into account real time scan information.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×