公开(公告)号：US20210240688A1

公开(公告)日：2021-08-05

申请号：US17236573

申请日：2021-04-21

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenli Zhou ,  Mingchang Wei ,  Jiangbo Liu

IPC: G06F16/22

Abstract: A data index establishment method obtains M raw data segments and a first-layer mapping relationship through segment fitting on raw data in a raw data table, and further obtains N first key segments and a second-layer mapping relationship through segment fitting on a first key of each raw data segment. In a subsequent data query process, a multi-layer mapping relationship is input from a to-be-queried key sequentially in descending order, until a location of the to-be-queried key in the raw data table is located.