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Data query method and device

A data query and data technology, applied in the computer field, can solve problems such as data query response delay, achieve the effect of optimizing computing resources and improving query efficiency

Pending Publication Date: 2019-07-16
ALIBABA GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a data query method and equipment to solve the problem of delay in response to existing data query

Method used

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Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0050] In a typical configuration of the present application, the terminal, the device serving the network and the trusted party all include one or more processors (CPUs), input / output interfaces, network interfaces and memory.

[0051] Memory may include non-permanent storage in computer readable media, in the form of random access memory (RAM) and / or nonvolatile memory such as read only memory (ROM) or flash RAM. Memory is an example of computer readable media.

[0052] Computer-readable media, including both permanent and non-permanent, removable and non-removable media, can be implemented by any method or technology for storage of information. Information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static rando...

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PUM

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Abstract

The invention aims to provide a data query method and device. The description information, such as statistical information, of the query result of the last query request in the distributed query process is used as metadata information, the query speed of the current query request is increased, computing resources are optimized, and the query efficiency is improved. An existing distributed query framework aims at how to scan a big data set more quickly instead of reducing the data set needing to be scanned through other optimization modes, in the mode, when the scale of the data set becomes larger and larger, the optimization effect will be gradually reduced, and the mode can be considered as an O (n) algorithm. The current query request is calculated by using the metadata information of the data set provided by the invention, so that even if the scale of the data set is increased, the data set can still be quickly screened, and the algorithm is an O (1) algorithm.

Description

technical field [0001] The invention relates to the field of computers, in particular to a data query method and equipment. Background technique [0002] In the big data application scenarios output by the real-time distributed computing engine in the public cloud and private cloud environment, how to quickly find the target data set in the massive data is the most faced. In traditional commercial databases, most of them rely on indexes to speed up queries. [0003] An index is a separate, physical storage structure that sorts the values ​​of one or more columns in a database table. It is a collection of values ​​in one or more columns in a table and corresponding pointers to the physical identification of these values ​​in the table. A list of logical pointers to the data pages. [0004] In the scenario of massive data query, the index-filtered data set may be too large or even unable to use the index. In this case, each row of data needs to be processed, resulting in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/2458G06F16/2453G06F16/242
CPCG06F16/24539G06F16/2433G06F16/2471
Inventor 吉剑南周祥
Owner ALIBABA GRP HLDG LTD
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