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US Patent 11086872 Method and system for outer join of database tables

Patent 11086872 was granted and assigned to Ant Financial on August, 2021 by the United States Patent and Trademark Office.

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Patent
Patent

Patent attributes

Patent Applicant
Ant Financial
Ant Financial
Current Assignee
Ant Financial
Ant Financial
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
11086872
Patent Inventor Names
Mengmeng Chen1
Date of Patent
August 10, 2021
Patent Application Number
20201120
Date Filed
November 20, 2020
Patent abstract

The specification provides a system, method, and storage medium for executing an outer join command on a first table and a second table in a distributed database. The method may comprise: broadcasting the first data set to a plurality of database nodes storing the second data set; dividing the plurality of database nodes into a first subset and a second subset; obtaining, an OUTER JOIN result based on the first data set broadcasted to each database node of the first subset and the portion of the second data set stored therein; obtaining, an INNER JOIN result based on the first data set broadcasted to each database node of the second subset and the portion of the second data set stored therein; and returning a result to the OUTER JOIN command by aggregating the OUTER JOIN result and the INNER JOIN result.

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