CN103593447B - Data processing method and device applied to database table - Google Patents
Data processing method and device applied to database table Download PDFInfo
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- CN103593447B CN103593447B CN201310577207.0A CN201310577207A CN103593447B CN 103593447 B CN103593447 B CN 103593447B CN 201310577207 A CN201310577207 A CN 201310577207A CN 103593447 B CN103593447 B CN 103593447B
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- 238000003672 processing method Methods 0.000 title claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012217 deletion Methods 0.000 description 6
- 230000037430 deletion Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000013500 data storage Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/23—Updating
- G06F16/2358—Change logging, detection, and notification
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- General Physics & Mathematics (AREA)
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- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The invention discloses a data processing method and device applied to a database table. The method comprises the steps of obtaining a temporary table having identical structure with the database table, and switching data in the database table into the temporary table through a switching operation. Through the data processing method and device applied to the database table, the effect of improving the data processing efficiency in a data table can be achieved.
Description
Technical field
The present invention relates to data processing field, in particular to a kind of data processing method for database table and
Device.
Background technology
When deleting the data of a tables of data, there are several conventional schemes：
Delete（Delete）Data, data base can delete the data in table one by one, can record corresponding when deleting data
Daily record.
Truncate（Block）Table, can directly block whole table, will not log, but require not have the external key of other tables with
This table associates.
Drop（Remove）Table, directly can delete whole table.
Delete data is very low due to having substantial amounts of read-write operation, efficiency in log.Truncate table is being deposited
Cannot use when external key associates.And Drop table is needing table to retain, only delete inapplicable during data.
For prior art to the data-handling efficiency in database table than relatively low problem, not yet propose at present effectively
Solution.
Content of the invention
Present invention is primarily targeted at providing a kind of data processing method for database table and device, existing to solve
There is technology to the data-handling efficiency in database table than relatively low problem.
To achieve these goals, according to an aspect of the invention, it is provided a kind of data processing side of database table
Method.The data processing method of the database table according to the present invention includes：Obtain the interim table consistent with database table structure；And
By handover operation by the data exchange of database table in interim table.
Further, by handover operation, the data exchange of database table is included to interim table：Judge database table
Whether there is subregion；If it is judged that database table has subregion, then pass through handover operation by the subregion of database table from database table
In be transferred in interim table；And if it is judged that database table does not have subregion, then pass through handover operation directly to database table
Swap with the data in interim table.
Further, by handover operation, the data exchange of database table is included to interim table：By handover operation
Modification database table in metadata configuration information by the data exchange of database table in interim table.
Further, before obtaining the interim table consistent with database table structure, method also includes：According to database table
Create interim table.
Further, by handover operation, the data exchange of database table is included to interim table：Delete database table
In data, by handover operation by the data exchange of database table in interim table after, method also includes：To interim table
Execution removes operation.
To achieve these goals, according to a further aspect in the invention, there is provided a kind of data processing dress of database table
Put.The data processing equipment of the database table according to the present invention includes：Judge module, for judging whether database table has point
Area；Shift module, for when judging that database table has subregion, by handover operation by the subregion of database table from data base
It is transferred in table in interim table；And Switching Module, for when judging that database table does not have subregion, then passing through handover operation
Directly the data in database table and interim table is swapped.
Further, shift module is additionally operable to change the configuration information of metadata in database table by number by handover operation
According to storehouse table data exchange in interim table.
Further, data processing equipment also includes：Creating unit, for obtaining face consistent with database table structure
When table before, according to database table create interim table.
Further, data processing equipment includes：Switch unit also includes removing module, for deleting in database table
Data；And remove unit, for by handover operation by the data exchange of database table in interim table after, to interim
Table execution removes operation.
By the present invention, using the interim table that acquisition is consistent with database table structure；And will be described by handover operation
The data exchange of database table, in described interim table, solves in prior art to the data-handling efficiency ratio in database table
Relatively low problem, and then reached the effect improving the data-handling efficiency in tables of data.
Brief description
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of the data processing method of database table according to a first embodiment of the present invention；
Fig. 2 is the flow chart of the data processing method of database table according to a second embodiment of the present invention；
Fig. 3 is the schematic diagram of the data processing equipment of database table according to a first embodiment of the present invention；And
Fig. 4 is the schematic diagram of the data processing equipment of database table according to a second embodiment of the present invention.
Specific embodiment
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Mutually combine.To describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Embodiments provide a kind of data processing method of tables of data, the method may operate in computer program
On.
Fig. 1 is the flow chart of the data processing method of database table according to a first embodiment of the present invention.As illustrated, should
The data processing method of database table comprises the steps：
Step S101, obtains the interim table consistent with database table structure.
The structure of tables of data includes field name, type etc., obtains the interim table consistent with data list structure and includes obtaining
With the field name of database table structure, type is consistent, index is consistent, table compress mode one is made peace, and Primary key is consistent, wherein,
Index includes clustered index and Nonclustered index.
In order to ensure not malfunction in data processing, set up the interim table consistent with database table structure.Wherein, quilt
Storing in the database table processing needs data to be processed, and interim table can need processed number with the table of data storage storehouse
According to.
Step S102, by handover operation by the data exchange of database table in interim table.Handover operation can be directed to
All data in database table are it is also possible to for the partial data in database table.So-called handover operation is exactly by data base
Data in table moves on in interim table, can remove many data simultaneously or the entirety of database table data removes, but, no
Log, is not related to reading and writing data IO, only the data in database table is entered when needing retention data database table structure
Row is processed.
By above step, batch hand-off process can be carried out to the data in database table, improve data processing
Efficiency, can preserve the table structure of database table simultaneously.
Fig. 2 is the flow chart of the data processing method of database table according to a second embodiment of the present invention.As illustrated, should
The data processing method of database table comprises the steps：
Step S201, obtains the interim table consistent with database table structure.
The structure of tables of data includes field name, type etc., obtains the interim table consistent with data list structure and includes obtaining
With the field name of database table structure, type is consistent, index is consistent, table compress mode one is made peace, and Primary key is consistent, wherein,
Index includes clustered index and Nonclustered index.
In order to ensure not malfunction in data processing, set up the interim table consistent with database table structure.Wherein, quilt
Storing in the database table processing needs data to be processed, and interim table can need processed number with the table of data storage storehouse
According to.
Step S202, judges whether database table has subregion.Database table partitioned storage data can improve data base's
, therefore, often there is subregion in performance in more complicated database table, if database table has subregion, need first to determine needs
Which subregion is the data processing be in, and the data in this subregion is processed.
The data being partitioned storage is physically multiple files, but remains a table, the operation to table in logic
As before subregion, therefore, method provided in an embodiment of the present invention can also be applied in the database table after being partitioned.No
By being the database table that is partitioned again without in the database table being partitioned, can be carried out the insertion of data, deletion, inquiry
With operations such as renewals.Certainly, the embodiment of the present invention more concerned be database table data be delete.
Step S203, if it is judged that database table has subregion, then passes through handover operation by the subregion of database table from number
It is transferred in interim table according in the table of storehouse.
Before the data in database table is processed, first determine whether whether database table has subregion, if data
Storehouse table has subregion, then the data needing the subregion carrying out data processing is transferred in interim table.During transfer, only turn
Move the data needing subregion to be processed, corresponding data list structure is not changed to this subregion.Meanwhile, in blank interim table
Empty content is switched in corresponding database table, it is achieved thereby that the switching of database table.
Step S204, if it is judged that database table does not have subregion, then passes through handover operation directly to database table and facing
When table in data swap.If it is judged that there is no subregion in database table, can be directly to all in database table
Data switches over operation.Corresponding with interim table for data in database table clear data is swapped, it is achieved thereby that
The switching of data.
In above process, due to being only the exchange of data, so just can complete in the very short time, such as 1 second.
Therefore, in the deletion to data, improve the efficiency of data deletion.Simultaneously as the database table that is stored with interim table
In data, data can be recovered in the case of delete by mistake.
Further, by handover operation, the data exchange of database table is included to interim table：By handover operation
Modification database table in metadata configuration information by the data exchange of database table in interim table.
By handover operation, the metadata in database table is switched in interim table by atomic operation, will data
Metadata in the table of storehouse is switched in interim table, and metadata corresponding position in database table is sky, that is, by data base
The content deleted is needed to delete in table, the structure of retention data storehouse table simultaneously, and content is deleted.
Further, before obtaining the interim table consistent with database table structure, interim table is created according to database table.
The interim table creating is consistent with the structure of database table, and including field name, type is consistent, index is consistent, gauge pressure
Contracting mode one is made peace, and Primary key is consistent, and wherein, index includes clustered index and Nonclustered index.
Further, by handover operation, the data exchange of database table is included to interim table：Delete database table
In data, by handover operation by the data exchange of database table in interim table after, to interim table execution remove behaviour
Make.
The interim table structure set up is consistent with database table, but its content is empty, by the data exchange of database table
While to interim table, the content pages of interim table are switched in database table, and in database table, the content of relevant position is sky, that is,
Data in database table is deleted.If the data being switched in interim table is no longer necessary to retain, only need to will be direct for interim table
Delete, it is achieved thereby that the content in database table is deleted, improve to data-handling efficiency in database table.
Present invention also offers a kind of data processing equipment of database table.
Fig. 3 is the schematic diagram of the data processing equipment of database table according to a first embodiment of the present invention.As illustrated, should
Device includes acquiring unit 10 and switch unit 20.
Acquiring unit 10 is used for obtaining the interim table consistent with database table structure.The structure of tables of data includes field name
Title, type etc., obtain the interim table consistent with data list structure and include obtaining and the field name of database table structure, type one
Cause, index is consistent, table compress mode one is made peace, and Primary key is consistent, wherein, index includes clustered index and Nonclustered index.
In order to ensure not malfunction in data processing, set up the interim table consistent with database table structure.Wherein, quilt
Storing in the database table processing needs data to be processed, and interim table can need processed number with the table of data storage storehouse
According to.
Switch unit 20 be used for by handover operation by the data exchange of database table in interim table.
Handover operation can be for all data in database table it is also possible to for the partial data in database table.
So-called handover operation is exactly to move on in interim table by the data in database table, can remove many data or data base simultaneously
The entirety of table data removes, but, not log, it is not related to reading and writing data IO, when needing retention data database table structure
Only the data in database table is processed.
By apparatus above, batch hand-off process can be carried out to the data in database table, improve data processing
Efficiency, can preserve the table structure of database table simultaneously.
Fig. 4 is the schematic diagram of the data processing equipment of database table according to a second embodiment of the present invention.As illustrated, should
The data processing equipment of database table includes acquiring unit 10 and switch unit 20, and wherein, switch unit 20 includes judge module
201st, shift module 202 and Switching Module 203.
Judge module 201 is used for judging whether database table has subregion.Database table partitioned storage data can improve number
According to the performance in storehouse, therefore, in more complicated database table, often there is subregion, if database table has subregion, need first really
Surely need data to be processed to be in which subregion, and the data in this subregion is processed.
The data being partitioned storage is physically multiple files, but remains a table, the operation to table in logic
As before subregion, therefore, method provided in an embodiment of the present invention can also be applied in the database table after being partitioned.No
By being the database table that is partitioned again without in the database table being partitioned, can be carried out the insertion of data, deletion, inquiry
With operations such as renewals.Certainly, the embodiment of the present invention more concerned be database table data be delete.
Shift module 202 is used for when judging that database table has subregion, by handover operation by the subregion of database table
It is transferred to from database table in interim table.
Before the data in database table is processed, first determine whether whether database table has subregion, if data
Storehouse table has subregion, then the data needing the subregion carrying out data processing is transferred in interim table.During transfer, only turn
Move the data needing subregion to be processed, corresponding data list structure is not changed to this subregion.Meanwhile, in blank interim table
Empty content is switched in corresponding database table, it is achieved thereby that the switching of database table.
Switching Module 203 is used for when judging that database table does not have subregion, then pass through handover operation directly to data base
Data in table and interim table swaps.If it is judged that there is no subregion in database table, can be directly in database table
All data switch over operation.Corresponding with interim table for data in database table clear data is swapped, thus
Achieve the switching of data.
In above process, due to being only the exchange of data, so just can complete in the very short time, such as 1 second.
Therefore, in the deletion to data, improve the efficiency of data deletion.Simultaneously as the database table that is stored with interim table
In data, data can be recovered in the case of delete by mistake.
Further, shift module 202 is additionally operable to change the configuration information of metadata in database table by handover operation
By the data exchange of database table in interim table.
By handover operation, the metadata in database table is switched in interim table by atomic operation, will data
Metadata in the table of storehouse is switched in interim table, and metadata corresponding position in database table is sky, that is, by data base
The content deleted is needed to delete in table, the structure of retention data storehouse table simultaneously, and content is deleted.
Further, this data processing equipment also includes creating unit, and this creating unit is used in acquisition and database table
Before the consistent interim table of structure, interim table is created according to database table.
The interim table creating is consistent with the structure of database table, and including field name, type is consistent, index is consistent, gauge pressure
Contracting mode one is made peace, and Primary key is consistent, and wherein, index includes clustered index and Nonclustered index.
Further, the switch unit 20 of data processing equipment also includes removing module, and this removing module is used for deleting number
According to the data in the table of storehouse, also include removing unit, for by handover operation by the data exchange of database table to interim table
In after, to interim table execution remove operation.
The interim table structure set up is consistent with database table, but its content is empty, by the data exchange of database table
While to interim table, the content pages of interim table are switched in database table, and in database table, the content of relevant position is sky, that is,
Data in database table is deleted.If the data being switched in interim table is no longer necessary to retain, only need to will be direct for interim table
Delete, it is achieved thereby that the content in database table is deleted, improve to data-handling efficiency in database table.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general
Computing device realizing, they can concentrate on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the executable program code of computing device, it is thus possible to they are stored
To be executed by computing device in the storage device, or they be fabricated to each integrated circuit modules respectively, or by they
In multiple modules or step be fabricated to single integrated circuit module to realize.So, the present invention be not restricted to any specific
Hardware and software combines.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of data processing method for database table is it is characterised in that include：
Obtain the interim table consistent with database table structure；And
By handover operation by the data exchange of described database table in described interim table,
Wherein, by handover operation, the data exchange of described database table is included to described interim table：
Judge whether described database table has subregion；
If it is judged that described database table has subregion, then by described handover operation by the subregion of described database table from described
It is transferred in database table in described interim table；And
If it is judged that described database table does not have subregion, then by described handover operation directly to described database table and described
Data in interim table swaps,
Empty content in blank interim table is switched in corresponding database table.
2. data processing method according to claim 1 is it is characterised in that by handover operation by described database table
Data exchange includes to described interim table：
By the configuration information that described handover operation changes metadata in described database table, the data of described database table is cut
Change in described interim table.
3. data processing method according to claim 1 is it is characterised in that obtaining face consistent with database table structure
When table before, methods described also includes：
Described interim table is created according to described database table.
4. data processing method according to claim 1 is it is characterised in that by handover operation by described database table
Data exchange includes to described interim table：Delete the data in described database table, by handover operation by described data
After the data exchange of storehouse table is in described interim table, methods described also includes：
Described interim table is executed and removes operation.
5. a kind of data processing equipment for database table is it is characterised in that include：
Acquiring unit, for obtaining the interim table consistent with database table structure；And
Switch unit, for by handover operation by the data exchange of described database table in described interim table, described switching
Unit includes：
Judge module, for judging whether described database table has subregion；
Shift module, for when judging that described database table has subregion, by described handover operation by described database table
Subregion be transferred to from described database table in described interim table；And
Switching Module, for when judging that described database table does not have subregion, then passing through described handover operation directly to described
Data in database table and described interim table swaps,
Empty content in blank interim table is switched in corresponding database table.
6. data processing equipment according to claim 5 is it is characterised in that described shift module is additionally operable to cut by described
Change and operate the configuration information changing metadata in described database table by the data exchange of described database table to described interim table
In.
7. data processing equipment according to claim 5 is it is characterised in that described data processing equipment also includes：
Creating unit, for, before obtaining the interim table consistent with database table structure, creating institute according to described database table
State interim table.
8. data processing equipment according to claim 5 is it is characterised in that described data processing equipment includes：
Described switch unit also includes removing module, for deleting the data in described database table；And
Remove unit, for by handover operation by the data exchange of described database table in described interim table after, right
Described interim table execution removes operation.
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| CN201310577207.0A CN103593447B (en) | 2013-11-18 | 2013-11-18 | Data processing method and device applied to database table |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104392001B (en) * | 2014-12-15 | 2017-11-14 | 北京国双科技有限公司 | Data base query method and device |
| CN104408179B (en) * | 2014-12-15 | 2018-11-06 | 北京国双科技有限公司 | Data processing method and device in tables of data |
| CN104965879B (en) * | 2015-06-12 | 2019-03-26 | 小米科技有限责任公司 | Modify the method and device of the table structure of tables of data |
| CN106649355A (en) * | 2015-10-30 | 2017-05-10 | 北京国双科技有限公司 | Method and device for processing data |
| CN110413593B (en) * | 2019-06-19 | 2024-05-17 | 平安银行股份有限公司 | Data migration method, device, computer equipment and storage medium |
| CN110333970B (en) * | 2019-07-10 | 2021-09-07 | 中国民航信息网络股份有限公司 | Data recovery method and device |
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Denomination of invention: Data processing method and device applied to database table Effective date of registration: 20190531 Granted publication date: 20170208 Pledgee: Shenzhen Black Horse World Investment Consulting Co.,Ltd. Pledgor: BEIJING GRIDSUM TECHNOLOGY Co.,Ltd. Registration number: 2019990000503 |
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Address after: 100083 No. 401, 4th Floor, Haitai Building, 229 North Fourth Ring Road, Haidian District, Beijing Patentee after: BEIJING GRIDSUM TECHNOLOGY Co.,Ltd. Address before: 100086 Beijing city Haidian District Shuangyushu Area No. 76 Zhichun Road cuigongfandian 8 layer A Patentee before: BEIJING GRIDSUM TECHNOLOGY Co.,Ltd. |
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