公开(公告)号：US20220300506A1

公开(公告)日：2022-09-22

申请号：US17833031

申请日：2022-06-06

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bing ZHOU ,  Wenwei XUE ,  Ting Yu Cliff LEUNG ,  Tao LI

IPC: G06F16/2452 ,  G06F16/2455 ,  G06F16/21 ,  G06F16/2453 ,  G06F16/28

Abstract: A query processing method including decomposing an SQL into logical plans based on data source feature information, to obtain a logical plan set, where the data source feature information is stored in an internal storage space of the query engine; generating physical plans for the logical plan set based on the data source feature information, to obtain a physical plan set; determining query costs of the physical plan set based on the data source feature information, to obtain a physical plan with a highest priority; and executing the physical plan with the highest priority, to obtain a query result queried by a user. The embodiments of this application further disclose a data source registration method and a query engine.

公开(公告)号：US20200073867A1

公开(公告)日：2020-03-05

申请号：US16663050

申请日：2019-10-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bing ZHOU ,  Wenwei XUE ,  Ting Yu Cliff LEUNG ,  Tao LI

IPC: G06F16/2452 ,  G06F16/2453 ,  G06F16/28 ,  G06F16/2455 ,  G06F16/21

Abstract: a query processing method including decomposing an SQL into logical plans based on data source feature information, to obtain a logical plan set, where the data source feature information is stored in an internal data source feature library of a query engine, and the internal data source feature library is stored in cache space of the query engine; generating physical plans for the logical plan set based on the data source feature information, to obtain a physical plan set; determining query costs of the physical plan set based on the data source feature information, to obtain a physical plan with a highest priority; and executing the physical plan with the highest priority, to obtain a query result queried by a user. The embodiments of this application further disclose a data source registration method and a query engine.