The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 2021
Filed:
Aug. 10, 2016
International Business Machines Corporation, Armonk, NY (US);
Yuan Chi Chang, Armonk, NY (US);
Timothy Ray Malkemus, Round Rock, TX (US);
Mohammad Sadoghi Hamedani, Chappaqua, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Techniques are provided for pre-filtering of join execution over multi-column range summaries and other synopses. An exemplary method comprises maintaining a synopsis for a plurality of data tables, wherein a given synopsis summarizes a set of records in a corresponding data table; and, in response to a request for a join operation for a set of the data tables: joining the synopses associated with the set of data tables to generate a joined synopsis; for joined records in the joined synopsis, obtaining corresponding records from the set of data tables as candidate records; and joining the candidate records. Two or more of the set of data tables can be distributed across a plurality of nodes and the synopses can be replicated and/or broadcasted across the plurality of nodes. Incremental updates to broadcasted and/or replicated synopses are optionally provided to at least one node.