公开(公告)号：US20180173762A1

公开(公告)日：2018-06-21

申请号：US15380647

申请日：2016-12-15

Applicant: Futurewei Technologies, Inc.

Inventor： Ron-Chung Hu ,  Guangyu Shi ,  Min Qiu ,  Masood Mortazavi ,  Jiafeng Zhu

IPC: G06F17/30

CPC classification number: G06F16/24544 ,  G06F16/24539 ,  G06F16/2455 ,  G06F16/24554

Abstract: A method implemented by a database system, comprising generating, by a processor of the database system, a plurality of join requests to at least two database tables with a common field responsive to a plurality of data requests, identifying, by the processor, at least two intervals of data with the common field using the plurality of join requests, creating, by the processor, a shadow table comprising the at least two intervals of data with the common field, wherein the shadow table comprises a plurality of fields from the at least two database tables, and wherein the plurality of fields are identified based on at least one of the join requests, storing, in a memory coupled to the processor, the shadow table, and generating, by the processor, a response to a subsequent data request using data stored in the shadow table.

公开(公告)号：US10671607B2

公开(公告)日：2020-06-02

申请号：US15274681

申请日：2016-09-23

Applicant: Futurewei Technologies, Inc.

Inventor： Min Qiu ,  Ron-Chung Hu ,  Masood Mortazavi

IPC: G06F16/00 ,  G06F16/2453 ,  G06F16/22

Abstract: A method includes traversing a query plan tree having multiple nodes, each node representative of an operation on data that is the subject of a query, to extract multiple pipelines from the query plan tree, identify dependencies between the multiple extracted pipelines, and provide a pipeline dependent tree based on the dependencies between the multiple extracted pipelines for execution of the query by multiple processors.