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:
Nov. 08, 2022
Filed:
Apr. 23, 2021
Snowflake Inc., Bozeman, MT (US);
Matthias Carl Adams, Berlin, DE;
Spyridon Triantafyllis, San Mateo, CA (US);
Lars Volker, Los Altos, CA (US);
Kevin Wang, Ottawa, CA;
Snowflake Inc., Bozeman, MT (US);
Abstract
Disclosed herein are systems and methods for pre-filter deduplication for multidimensional two-sided interval joins. In an embodiment, a data platform receives query instructions for a two-sided N dimensional interval join, where N is an integer greater than 1. The two-sided N dimensional interval join has an interval-join predicate that compares intervals determined from the input relations in each of N dimensions. The data platform implements the two-sided N dimensional interval join as a query-plan section that includes an N dimensional band join that is followed by a deduplication operator that is followed by a filter that applies the interval-join predicate. The N dimensional band join includes a hash join keyed to N dimensional domain cells overlapped at least in part by intervals determined from the input relations in each of the N dimensions. The deduplication operator removes duplicate rows from a potential-duplicates subset of the output of the N dimensional band join.