Method, device and electronic equipment for data connection

A technology of data and data rows, applied in database indexing, electronic digital data processing, structured data retrieval, etc., can solve the problem of low efficiency of data connection execution

Active Publication Date: 2021-03-16
BEIJING OCEANBASE TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of this specification provides a data connection method, device and electronic equipment, which are used to solve the technical problem of low data connection execution efficiency in the prior art

Method used

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  • Method, device and electronic equipment for data connection
  • Method, device and electronic equipment for data connection
  • Method, device and electronic equipment for data connection

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Embodiment

[0050] This embodiment provides a data connection method, which is applied to data processing systems, such as databases, data tables and other systems that require data connection, using the merge connection algorithm and the zigzag merge connection algorithm to be connected. The first data set and the second data set to be connected datasets for adaptive data joins. Please refer to figure 1 , the data connection method includes:

[0051] Step 10, performing a data connection operation on the first data set and the second data set through the first connection algorithm, so as to connect the data whose key values ​​are equal in the first data set and the second data set;

[0052] Step 11. During the execution process of the first connection algorithm, obtain the execution parameters of the first connection algorithm, and the execution parameters are used to characterize the execution efficiency of the algorithm execution process;

[0053] Step 12: Switch the first connection...

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Abstract

A data connection method and apparatus and an electronic device. The method comprises: carrying out a data connection operation on a first data set and a second data set by means of a first connection algorithm, to connect data of the same key value in the first data set and the second data set; in the execution process of the first connection algorithm, obtaining an execution parameter representing the execution efficiency of the algorithm in the execution process of the first connection algorithm; and switching the first connection algorithm into a second connection algorithm according to the execution parameter, and continuing executing the data connection operation by means of the second connection algorithm. According to the method, automatic switching of the connection algorithm is realized according to the algorithm execution state in the data connection process.

Description

technical field [0001] This specification relates to the field of software technology, in particular to a data connection method, device and electronic equipment. Background technique [0002] Join (Join) is to associate two data together. For example, after data A and B are connected, data A-B can be formed for data query, file association, etc. It is one of the basic relational algebra operations of the database. In database implementation It has a wide range of application scenarios. The implementation of the join algorithm directly affects the implementation efficiency of the join operator (Join Operator), and has a crucial impact on the performance of the entire database. Common join algorithms (Join Algorithm) include nested join (Nested-Loop Join), merge join (Merge Join), hash join (Hash Join), etc. Compared with the merge join, there is also a zigzag merge join (Zigzag Merge Join). [0003] Merge connection: For two data sets, the data in one of the data sets is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/22G06F16/2455
CPCG06F16/22G06F16/2456
Inventor 陈萌萌
Owner BEIJING OCEANBASE TECH CO LTD
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