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A database retrieval method and device

A database and data technology, applied in the field of data processing, can solve problems such as low efficiency and long time

Active Publication Date: 2020-11-03
CHINA UNIONPAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present invention provides a database retrieval method and device to solve the problem of long time and low efficiency when searching according to non-primary key conditions in the key-value database

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  • A database retrieval method and device
  • A database retrieval method and device
  • A database retrieval method and device

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] The embodiment of the present invention provides a database retrieval method, the process is as follows figure 1 As shown, the method may include the following steps:

[0041] S101. Determine a first search expression corresponding to the received first non-primary key condition.

[0042] S102. Using the mapping relationship between the search expression and the primary key set, determine the first primary key set corresponding to ...

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Abstract

The invention relates to the field of data processing and discloses a database retrieval method and a database retrieval device. The method comprises the steps of determining a first retrieval expression corresponding to a received first non-primary key condition; determining a first primary key set corresponding to the first retrieval expression by use of a mapping relation between the retrieval expression and the primary key set, wherein primary keys in the first primary key set correspond to numbers, which satisfy the first non-primary key condition, in a database; and determining a retrieval result corresponding to the first non-primary key condition according to the primary keys in the first primary key set. The method and the device are used for solving the problems of long time and low efficiency when a key value database is retrieved according to the non-primary key condition.

Description

technical field [0001] The invention relates to the field of data processing, in particular to a database retrieval method and device. Background technique [0002] With the explosive development of the Internet, e-commerce, system operation logs, web applications, etc. have accumulated a large amount of data, and its scale is huge. Even small businesses have collected terabytes of data. For such a large data set Application background, the traditional database is no longer applicable. At present, a successful solution for this type of scenario is to use a distributed key-value storage system database to improve data compression efficiency and storage scale by establishing a column storage structure, combined with compression, block and other technologies. [0003] In key-value storage, data is called a value (value), and each value corresponds to a unique identifier (key). According to the unique identifier (key), you can directly locate the position of the value (value). ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/22G06F16/242G06F16/2453
CPCG06F16/2228G06F16/242G06F16/2453
Inventor 刘铁李瑞王述振高建斌
Owner CHINA UNIONPAY