CN103092886B - A kind of implementation method of data query operation, Apparatus and system - Google Patents
A kind of implementation method of data query operation, Apparatus and system Download PDFInfo
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Abstract
The invention discloses a kind of implementation method of data query operation, Apparatus and system, after performing query manipulation to the tables of data of external data systems, by the data buffer storage that inquires in temporary table; After index is increased to the data of buffer memory in temporary table, give each data exchange node by all data uniform distributions in temporary table, determine the index range of its correspondence.The data that the present invention arrives by setting up temporary table caching query, each data exchange node just directly can carry out read operation to the partial data in cache table concurrently, avoid each data exchange node to need in external system, carry out complicated query manipulation concurrently, alleviate the burden of the external data systems server when processing mass data, and, because the number of data lines distributing to index range in the temporary table of each data exchange node corresponding is relatively average, working time can be substantially identical when parallel processing to ensure that each data exchange node, thus improve overall search efficiency.
Description
Technical field
The present invention relates to data query technique field, particularly relate to a kind of implementation method of data query operation, Apparatus and system.
Background technology
At present, import in data-storage system such as relevant database, distributed data base and other tables of data in external data systems of data-query interfaces is provided or to the method for the Query Result of tables of data is:
By data to be checked in external data systems according to certain allocation rule, distribute to the multiple data exchange nodes in data-storage system; Each data exchange node performs inquiry request to the data in the tables of data of external data systems concurrently, obtains respective Query Result; After being merged by the Query Result of each data exchange node, obtain complete Query Result.
Wherein, specifically two kinds can be divided into: a kind of is the allocation rule based on side-play amount and dominant record line number: the summary journal line number first obtaining data to be checked in external data systems according to allocation rule, then according to the number of summary journal line number and data exchange node, corresponding query context is distributed to each data exchange node, each data exchange node last is inquired about the scope be assigned to concurrently in external data systems, and returns Query Result.
Another kind is the allocation rule based on record identification scope: the span first calculating the record identification of data to be checked in external data systems, then according to the span of record identification and the number of data exchange node, each data exchange node is distributed to the query context of corresponding record identification, each data exchange node last is inquired about the query context of the record identification be assigned to concurrently in external data systems, and returns Query Result.
For the first allocation rule, because each data exchange node needs to carry out complicated query manipulation concurrently in external data systems, and need the correctness of Query Result being carried out to the total Query Result of sequence guarantee, therefore the poor-performing when processing big data quantity, treatment effeciency is lower; Further, because each data exchange node can the tables of data submit Query request of externally data system concurrently, therefore great burden can be caused to system when there is mass data switching node.
For the second allocation rule, the data in external data systems are split due to employing record identification, can not ensure that the data query amount being assigned to each data exchange node is even, therefore can cause when parallel query, working time of some data exchange nodes, relatively length made overall search efficiency low; Further, this kind of mode can only process record identification and record identification is the data of numeric type (int or long type), can bring the limitation of use.
Summary of the invention
Embodiments provide a kind of implementation method of data query operation, Apparatus and system, in order to solve the existing data query operation problem that server burden is heavier when realizing, search efficiency is lower.
The implementation method of a kind of data query operation that the embodiment of the present invention provides, comprising:
Query manipulation is performed, by the data buffer storage inquired in the temporary table set up in advance to the tables of data of external data systems;
An index is increased, until last column data to the data often setting line number of buffer memory in described temporary table;
According to the number of the data exchange node in the summary journal line number of data all in described temporary table and data-storage system, give each data exchange node by all data uniform distributions in described temporary table, determine the index range that each data exchange node is corresponding;
The index range into it distributes is issued, so that each data exchange node reads data to described data-storage system concurrently according to distributed index range from described temporary table to each data exchange node.
The implement device of a kind of data query operation that the embodiment of the present invention provides, comprising:
Enquiry module, for performing query manipulation, by the data buffer storage inquired in the temporary table set up in advance to the tables of data of external data systems;
Module set up in index, for increasing an index, until last column data to the data often setting line number of buffer memory in described temporary table;
Index assignment module, for the number according to the data exchange node in the summary journal line number of data all in described temporary table and data-storage system, give each data exchange node by all data uniform distributions in described temporary table, determine the index range that each data exchange node is corresponding;
Sending module, for issuing the index range into it distributes to each data exchange node, so that each data exchange node reads data to described data-storage system concurrently according to distributed index range from described temporary table.
A kind of data query operation that the embodiment of the present invention provides realize system, comprising: external data systems and data-storage system, also comprise: the implement device of data query operation; Wherein,
The implement device of described data query operation, for performing query manipulation, by the data buffer storage inquired in the temporary table set up in advance to the tables of data of external data systems; An index is increased, until last column data to the data often setting line number of buffer memory in described temporary table; According to the number of the data exchange node in the summary journal line number of data all in described temporary table and data-storage system, give each data exchange node by all data uniform distributions in temporary table, determine the index range that each data exchange node is corresponding; The index range into it distributes is issued to each data exchange node;
Described data-storage system comprises multiple data exchange node, and each data exchange node is used for the index range sent according to the implement device of the described data query operation received, and reads data to described data-storage system from described temporary table.
The beneficial effect of the embodiment of the present invention comprises:
Implementation method, the Apparatus and system of a kind of data query operation that the embodiment of the present invention provides, perform query manipulation, by the data buffer storage inquired in the temporary table set up in advance to the tables of data of external data systems; An index is increased to the data often setting line number of buffer memory in temporary table, until last column data; According to the number of the data exchange node in the summary journal line number of data all in temporary table and data-storage system, give each data exchange node by all data uniform distributions in temporary table, determine the index range that each data exchange node is corresponding; The index range into it distributes is issued, so that each data exchange node reads data to data-storage system concurrently according to distributed index range from temporary table to each data exchange node.The data that the present invention arrives by setting up temporary table caching query, each data exchange node just directly can carry out read operation to the partial data in cache table concurrently, avoid each data exchange node to need in external system, carry out complicated query manipulation concurrently, alleviate the burden of the external data systems server when processing mass data, and, because the number of data lines distributing to index range in the temporary table of each data exchange node corresponding is relatively average, working time can be substantially identical when parallel processing to ensure that each data exchange node, thus improve overall search efficiency.
Accompanying drawing explanation
One of process flow diagram of the implementation method of the data query operation that Fig. 1 provides for the embodiment of the present invention;
The process flow diagram two of the implementation method of the data query operation that Fig. 2 provides for the embodiment of the present invention;
The structural representation of the implement device of the data query operation that Fig. 3 provides for the embodiment of the present invention;
The structural representation realizing system of the data query operation that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the implementation method of the data query operation that the embodiment of the present invention provides, the embodiment of Apparatus and system are described in detail.
The implementation method of a kind of data query operation that the embodiment of the present invention provides, as shown in Figure 1, specifically comprises the following steps:
S101, query manipulation is performed, by the data buffer storage inquired in the temporary table set up in advance to the tables of data of external data systems;
S102, an index is increased to the data often setting line number of buffer memory in temporary table, until last column data;
All data uniform distributions in temporary table are given each data exchange node, are determined the index range that each data exchange node is corresponding by S103, number according to the data exchange node in the summary journal line number of data all in temporary table and data-storage system;
S104, to each data exchange node issue into its distribute index range so that each data exchange node reads data to data-storage system concurrently according to distributed index range from temporary table.
Wherein, in the said method that the embodiment of the present invention provides, external data systems can for relevant database, distributed data base or other system of data-query interfaces can be provided; Data-storage system can be relevant database, distributed data base or distributed file system etc., and in the specific implementation, above-mentioned data-storage system such as can be deployed in cloud computing platform, in this no limit.
Wherein, relative to the first allocation rule of the prior art, the said method that the embodiment of the present invention provides, after setting up the data that temporary table caching query arrives, each data exchange node just directly can perform read operation to the partial data in cache table concurrently, each data exchange node can be avoided to need in external system, carry out complicated query manipulation concurrently, causing the problem of the poor-performing when processing mass data, also can not cause excessive burden to system when there is mass data switching node simultaneously.
Below the specific implementation of above steps is described in detail.
Particularly, in the said method that the embodiment of the present invention provides, step S102 can be realized by following manner: to the data often setting line number of buffer memory in temporary table, increase by one from numeric type (int or the long type) index increasing fixed step size from 1, until last column data.
Particularly, above-mentioned steps S102, also can be realized by following manner: to the data often setting line number of buffer memory in temporary table, increases a character type or character string type index, until last column data.
Relative to the second allocation rule of the prior art, the embodiment of the present invention provides said method, an index is increased to the data often setting line number of buffer memory in temporary table, ensure that number of data lines corresponding to index range that each data exchange node is assigned to is relatively average, working time can be substantially identical when parallel processing to make each data exchange node, improves overall search efficiency; Further, the method that the embodiment of the present invention provides, when implementing, does not limit the type of index, and index can be numeric type can be also character type or character string type, thus avoids the limitation of use.
Particularly, the step S103 in the said method that the embodiment of the present invention provides, as shown in Figure 2, can be realized by following step:
The summary journal line number of the data of buffer memory in S201, calculating temporary table;
S202, by the quantity of summary journal line number divided by data exchange node, obtain the line number of the data that each data exchange node should process;
S203, according to the index increased in temporary table, be defined as each data exchange node distribute the index range comprising corresponding line number.
Such as: the data one calculating buffer memory in temporary table have 10000 row, if one has 10 data exchange nodes, the data that each data exchange node should process 1000 row can so be calculated; If increase by one from 1 from the index increased to 100 row data every in temporary table, the index range read in temporary table of so distributing the 1st data exchange node is just 1 ~ 10, the index range read in temporary table of distributing the 2nd data exchange node is just 11 ~ 20, by that analogy.
Be described below by the concrete implementation method of example to above-mentioned data query operation.
Such as, the method that the use embodiment of the present invention provides is by Relational DBMS (RDBMS, the Query Result of the tables of data RelationalDatabaseManagementSystem) imports in cloud computing platform, realizes in particular by with under type.
1, in the tables of data of RDBMS, perform query statement, and set up the data that temporary table caching query arrives, concrete statement is: Createtabletemp_tableasSelectPfromTwhereCgroupbyGorderby O;
2, increase by row successively from the index id increased from 1 to every a line of the data of buffer memory in the temporary table set up, concrete statement is: Altertabletemp_tableaddidINTAUTO_INCREMENTPRIMARYKEY;
3, generate a counting statement according to the parameter provided, obtain the summary journal line number R of the data of buffer memory in temporary table, concrete statement is: Selectcount (*) fromtemp_table;
4, by the number M of summary journal line number R divided by data exchange node, the line number L of the data that each data exchange node should process is obtained;
5, according to the index id increased in temporary table, the index range comprising corresponding line number that each data exchange node distributes is defined as.
6, each data exchange node generates respective query statement according to distributed index range: Select*fromtemp_tablewhereid > startANDid < end; The data read from temporary table concurrently within the scope of manipulative indexing store to cloud computing platform.Wherein the value of start and end is not identical for each data exchange node.
Based on same inventive concept, the embodiment of the present invention additionally provides a kind of implement device and system of data query operation, the principle of dealing with problems due to this Apparatus and system is similar to the implementation method of aforementioned a kind of data query operation, therefore the enforcement of this device and system see the enforcement of method, can repeat part and repeats no more.
The implement device of a kind of data query operation that the embodiment of the present invention provides, as shown in Figure 3, comprising:
Enquiry module 301, for performing query manipulation, by the data buffer storage inquired in the temporary table set up in advance to the tables of data of external data systems;
Module 302 set up in index, for increasing an index to the data often setting line number of buffer memory in temporary table, until last column data;
Index assignment module 303, for the number according to the data exchange node in the summary journal line number of data all in temporary table and data-storage system, give each data exchange node by all data uniform distributions in temporary table, determine the index range that each data exchange node is corresponding;
Sending module 304, for issuing the index range into it distributes to each data exchange node, so that each data exchange node reads data to data-storage system concurrently according to distributed index range from temporary table.
Further, module 302 set up in the index in the said apparatus that the embodiment of the present invention provides, and specifically for the data often setting line number to buffer memory in temporary table, increases by one from the numeric type index increasing fixed step size from 1, until last column data.
Or further, module 302 set up in the index in the said apparatus that the embodiment of the present invention provides, specifically for the data often setting line number to buffer memory in temporary table, increase a character type or character string type index, until last column data.
Further, the index assignment module 303 in the said apparatus that the embodiment of the present invention provides, specifically for calculating the summary journal line number of the data of buffer memory in temporary table; By the quantity of summary journal line number divided by data exchange node, obtain the line number of the data that each data exchange node should process, and according to the index increased in temporary table, be defined as the index range comprising corresponding line number that each data exchange node distributes.
What the embodiment of the present invention additionally provided a kind of data query operation realizes system, as shown in Figure 4, comprising: external data systems 401 and data-storage system 402; Also comprise: the implement device 403 of data query operation; Wherein,
The implement device 403 of data query operation, for performing query manipulation, by the data buffer storage inquired in the temporary table set up in advance to the tables of data of external data systems 401; An index is increased to the data often setting line number of buffer memory in temporary table, until last column data; According to the number of the data exchange node 4021 in the summary journal line number of data all in temporary table and data-storage system 402, give each data exchange node 4021 by all data uniform distributions in temporary table, determine the index range of each data exchange node 4021 correspondence; The index range into it distributes is issued to each data exchange node 4021;
Data-storage system 402 comprises multiple data exchange node 4021, and each data exchange node 4021, for the index range sent according to the implement device 403 of the data query operation received, reads data to data-storage system 402 from temporary table.
Further, the present invention is external data systems 401 in the said system that provides of embodiment and data-storage system 402 is relevant database, distributed data base or distributed file system etc.
Those skilled in the art should know, implement device 403 and the external data systems 401 of the data query operation in the specific implementation in the said system that provides of the embodiment of the present invention can be deployed in same entity, also can be deployed in respectively in different entities, in this no limit.
Through the above description of the embodiments, those skilled in the art can be well understood to the embodiment of the present invention can by hardware implementing, and the mode that also can add necessary general hardware platform by software realizes.Based on such understanding, the technical scheme of the embodiment of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions and perform method described in each embodiment of the present invention in order to make a computer equipment (can be personal computer, server, or the network equipment etc.).
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Implementation method, the Apparatus and system of a kind of data query operation that the embodiment of the present invention provides, perform query manipulation, by the data buffer storage inquired in the temporary table set up in advance to the tables of data of external data systems; An index is increased to the data often setting line number of buffer memory in temporary table, until last column data; According to the number of the data exchange node in the summary journal line number of data all in temporary table and data-storage system, give each data exchange node by all data uniform distributions in temporary table, determine the index range that each data exchange node is corresponding; The index range into it distributes is issued, so that each data exchange node reads data to data-storage system concurrently according to distributed index range from temporary table to each data exchange node.The data that the present invention arrives by setting up temporary table caching query, each data exchange node just directly can carry out read operation to the partial data in cache table concurrently, avoid each data exchange node to need in external system, carry out complicated query manipulation concurrently, alleviate the burden of the external data systems server when processing mass data, and, because the number of data lines distributing to index range in the temporary table of each data exchange node corresponding is relatively average, working time can be substantially identical when parallel processing to ensure that each data exchange node, thus improve overall search efficiency.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. an implementation method for data query operation, is characterized in that, comprising:
Query manipulation is performed, by the data buffer storage inquired in the temporary table set up in advance to the tables of data of external data systems;
An index is increased, until last column data to the data often setting line number of buffer memory in described temporary table;
According to the number of the data exchange node in the summary journal line number of data all in described temporary table and data-storage system, give each data exchange node by all data uniform distributions in described temporary table, determine the index range that each data exchange node is corresponding;
The index range into it distributes is issued, so that each data exchange node reads data to described data-storage system concurrently according to distributed index range from described temporary table to each data exchange node.
2. the method for claim 1, is characterized in that, increases an index, until last column data, specifically comprise the data often setting line number of buffer memory in described temporary table:
To the data often setting line number of buffer memory in described temporary table, increase by one from the numeric type index increasing fixed step size from 1, until last column data.
3. the method for claim 1, is characterized in that, increases an index, until last column data, specifically comprise the data often setting line number of buffer memory in described temporary table:
To the data often setting line number of buffer memory in described temporary table, increase a character type or character string type index, until last column data.
4. the method as described in any one of claim 1-3, it is characterized in that, according to the number of the data exchange node in the summary journal line number of data all in described temporary table and data-storage system, each data exchange node is given by all data uniform distributions in described temporary table, determine specifically to comprise the index range that each data exchange node is corresponding:
Calculate the summary journal line number of the data of buffer memory in described temporary table;
By the quantity of described summary journal line number divided by data exchange node, obtain the line number of the data that each data exchange node should process, and according to the index increased in temporary table, be defined as the index range comprising corresponding line number that each data exchange node distributes.
5. an implement device for data query operation, is characterized in that, comprising:
Enquiry module, for performing query manipulation, by the data buffer storage inquired in the temporary table set up in advance to the tables of data of external data systems;
Module set up in index, for increasing an index, until last column data to the data often setting line number of buffer memory in described temporary table;
Index assignment module, for the number according to the data exchange node in the summary journal line number of data all in described temporary table and data-storage system, give each data exchange node by all data uniform distributions in described temporary table, determine the index range that each data exchange node is corresponding;
Sending module, for issuing the index range into it distributes to each data exchange node, so that each data exchange node reads data to described data-storage system concurrently according to distributed index range from described temporary table.
6. device as claimed in claim 5, it is characterized in that, module set up in described index, specifically for the data often setting line number to buffer memory in described temporary table, increases by one from the numeric type index increasing fixed step size from 1, until last column data.
7. device as claimed in claim 5, it is characterized in that, module set up in described index, specifically for the data often setting line number to buffer memory in described temporary table, increases a character type or character string type index, until last column data.
8. the device as described in any one of claim 5-7, is characterized in that, described index assignment module, specifically for calculating the summary journal line number of the data of buffer memory in described temporary table; By the quantity of described summary journal line number divided by data exchange node, obtain the line number of the data that each data exchange node should process, and according to the index increased in temporary table, be defined as the index range comprising corresponding line number that each data exchange node distributes.
9. data query operation realize a system, comprising: external data systems and data-storage system; It is characterized in that, also comprise: the implement device of data query operation; Wherein,
The implement device of described data query operation, for performing query manipulation, by the data buffer storage inquired in the temporary table set up in advance to the tables of data of external data systems; An index is increased, until last column data to the data often setting line number of buffer memory in described temporary table; According to the number of the data exchange node in the summary journal line number of data all in described temporary table and data-storage system, give each data exchange node by all data uniform distributions in described temporary table, determine the index range that each data exchange node is corresponding; The index range into it distributes is issued to each data exchange node;
Described data-storage system comprises multiple data exchange node, and each data exchange node is used for the index range sent according to the implement device of the described data query operation received, and reads data to described data-storage system from described temporary table.
10. system as claimed in claim 9, it is characterized in that, described external data systems and described data-storage system are relevant database, distributed data base or distributed file system.
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| CN104753984A (en) * | 2013-12-26 | 2015-07-01 | 乐视网信息技术（北京）股份有限公司 | Data transmission method and data transmission device |
| CN105095255A (en) * | 2014-05-07 | 2015-11-25 | 中兴通讯股份有限公司 | Data index creating method and device |
| CN106407200A (en) * | 2015-07-29 | 2017-02-15 | 北京京东尚科信息技术有限公司 | Data issuing method and apparatus |
| CN106649736B (en) * | 2016-12-23 | 2020-04-17 | 成都信息工程大学 | Automatic number generation method in general database |
| CN107508901B (en) * | 2017-09-04 | 2020-12-22 | 北京京东尚科信息技术有限公司 | Distributed data processing method, device, server and system |
| EP3819788A4 (en) * | 2018-08-31 | 2021-07-14 | Huawei Technologies Co., Ltd. | Data processing system and data processing method |
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