公开(公告)号：US11163741B2

公开(公告)日：2021-11-02

申请号：US16169585

申请日：2018-10-24

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guoqiang Zhang ,  Lin Huang ,  Dongwang Sun

IPC: G06F16/22 ,  H04L29/08 ,  G06F16/2455 ,  G06F16/21 ,  G06F16/25

Abstract: The present disclosure relates to example table connection methods, devices, and systems. In one example method, data that is sent by a coordinator node and that is in a first target column in a first data table is stored by a data node in a local memory. The data node receives a table connection request. When first data in the first target column is the same as second data in a second target column, the data node connects data in a row in which the first data is located to data in a row in which the second data is located. The data node sends a connection result to the coordinator node.

公开(公告)号：US10979520B2

公开(公告)日：2021-04-13

申请号：US15979951

申请日：2018-05-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Lin Huang ,  Chuanting Wang

IPC: H04L29/08 ,  G06F16/27 ,  G06F16/245 ,  H03M7/30 ,  G06F16/00 ,  H03M7/46

Abstract: Embodiments of the present invention relate to the database field, and in particular, to a data transmission method and apparatus, so as to reduce overheads for data transmission between nodes in a distributed database and lighten network load. In the embodiments of the present invention, a DN determines a column that has a distribution rule of parameters in the column; the DN determines, according to a data type of the parameters of the column and the distribution rule of the parameters in the column, a compression algorithm corresponding to the column; the DN compresses the column using the compression algorithm; and the DN sends a compressed column to a target node. In this way, the overheads for the data transmission between the nodes are reduced, and the network load is lightened.

公开(公告)号：US20190108174A1

公开(公告)日：2019-04-11

申请号：US16204526

申请日：2018-11-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Peiliang Du ,  Chuanting Wang ,  Lin Huang

IPC: G06F16/2455 ,  G06F16/22

Abstract: A data system comprising a primary server and a secondary server, where the primary server obtains a first partition instruction and a second partition instruction, partition data in a first data table according to a first partition key to obtain a first partition table, and send the second partition instruction to the secondary server. The first partition instruction includes a first partition key, and the second partition instruction includes a second partition key, which is different from the first partition key. The second partition instruction is for triggering the secondary server to partition data in a second data table on the secondary server according to the second partition key to obtain a second partition table, which is the same as the first data table.