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:
Apr. 12, 2022
Filed:
Jul. 17, 2019
Using in-storage computation to improve the performance of hash join for database and data analytics
Scaleflux, Inc., San Jose, CA (US);
Tong Zhang, Albany, NY (US);
Yang Liu, Milpitas, CA (US);
Fei Sun, Irvine, CA (US);
Hao Zhong, Los Gatos, CA (US);
SCALEFLUX, INC., San Jose, CA (US);
Abstract
A method according to embodiments includes: storing an entire hash table of a table R in memory of a computational storage device; storing a second table S in storage media of the computational storage device, the table R being smaller than the table S, wherein the hash JOIN operation is directed to combining a c-th column in the table S and a c-th column in the table R; wherein, for each row of the table S, the computational storage device configured to perform a method, including: applying a hash function to a value of the c-th column to provide a hash result; looking up the hash result in the hash table stored in the memory of the computational storage device; and if the hash result is found, sending the row of the table S and a corresponding row index of the table R to the host computing system.