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. 26, 2017
Filed:
Mar. 06, 2013
Oracle International Corporation, Redwood Shores, CA (US);
Thierry Cruanes, San Mateo, CA (US);
Junyi Xie, Dobbs Ferry, NY (US);
Yiu Woon Lau, New York, NY (US);
ORACLE INTERNATIONAL CORPORATION, Redwood Shores, CA (US);
Abstract
Techniques are provided for sharing expression evaluation across a database management system and a storage layer. According to an embodiment, a plurality of target operators are identified that include a common expression. Each respective target operator corresponds to a step that evaluates the common expression during query execution. The plurality of target operators are modified to enable sharing of an evaluation result of the common expression. The query is executed according to the target operators. During query execution, the evaluation result is shared by the target operators. In other embodiments, the evaluation of the common expression is pushed to a storage layer. During query execution, a database management system retrieves the evaluation result of the common expression from the storage layer.
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