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Search range determination method and device and storage medium

A search range and range technology, applied in the search field, can solve problems such as weak search function and large search range, and achieve the effect of reducing search time, reducing search range, and expanding application range

Active Publication Date: 2019-09-06
ALIBABA GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In order to solve the problem that not only the search range is too large, but also the search function is weak, the embodiment of the present invention provides a method, device and terminal equipment for determining the search range

Method used

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  • Search range determination method and device and storage medium
  • Search range determination method and device and storage medium
  • Search range determination method and device and storage medium

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Embodiment Construction

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0036] figure 1 It is a schematic diagram of a system ...

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Abstract

The invention discloses a search range determination method and device and a storage medium. The method comprises the steps of converting a conditional expression used for searching a data table intoone or more sub expressions meeting the searching requirement; marking the converted sub-expressions with monotonous characteristics in the one or more sub-expressions as monotonous sub-expressions;obtaining a partition interval of the data table and a monotonous interval of the monotonous subexpression; judging whether the partition interval is in a monotonous interval or not; and determining whether the partition interval is a search range of the data table based on the judgment result. According to the embodiment of the invention, not only can the search range be reduced, but also a powerful search function can be realized by utilizing complex search conditions.

Description

technical field [0001] The present invention relates to the field of search technology, in particular to a method, device and storage medium for determining a search range. Background technique [0002] With the rapid development of network technology, the amount of data in the database has increased rapidly, and the era of big data has come. Typically data is stored in the database by region. At the logical layer, data can be divided into multiple partitions and stored in different database tables; at the physical layer, data can be divided into multiple partitions and stored in different data files or distributed database nodes. Among them, partitioning is the process of calculating data content according to the same formula, and dividing data into multiple partitions logically or physically. Range partitioning is a partitioning method that ensures that in consecutive partitions, the maximum value of the previous partition is less than the minimum value of the current pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/22G06F16/245G06F16/2458
CPCG06F16/2282G06F16/245G06F16/2471
Inventor 徐冬汪龙重
Owner ALIBABA GRP HLDG LTD
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