CN110806999A - Method and device for managing CSV file - Google Patents
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- 238000012986 modification Methods 0.000 description 10
- 230000004048 modification Effects 0.000 description 10
- 238000013507 mapping Methods 0.000 description 7
- 238000012216 screening Methods 0.000 description 7
- 238000007792 addition Methods 0.000 description 6
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Abstract
The invention provides a method for managing CSV files, which comprises the following steps: receiving an input sentence based on a database language; converting the input statement into an operation command of the CSV file, wherein the operation command comprises an operation type, file information and operation content; opening a CSV file corresponding to the file information; and operating the CSV file according to the operation command. The invention provides a method for managing CSV files, which realizes the automatic operation of the CSV files by converting input sentences based on database language into operation commands of the CSV files, simplifies the data management of the CSV files and improves the efficiency of data processing.
Description
Technical Field
The present invention relates to a method and apparatus for managing files, and more particularly, to a method and apparatus for managing CSV files.
Background
At present, the number of computer application programs and operating systems is increasing, and for the sake of data security, the format of data accessed by some programs or systems is private and/or irregular, which greatly reduces the transmission and processing speed of data between different application programs and operating systems.
Comma Separated Values (CSV) files store tabular data in plain text form, which can be used for data transmission between different programs or systems. The CSV file format is a general, relatively simple file format, and is widely used in the field of computers. However, the CSV file has the disadvantage that the data management is rather complicated, and the operations such as query, modification, addition or deletion cannot be conveniently performed on the data in the CSV file, which is particularly obvious in the case of large data volume of the CSV file.
Therefore, it is desirable to provide a method and apparatus for managing CSV files, so as to simplify data management of CSV files and improve data processing speed.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and an apparatus for managing CSV files, so as to simplify data management of CSV files and improve data processing speed.
In order to solve the above technical problem, the present invention provides a method for managing CSV files, comprising the steps of:
receiving an input sentence based on a database language;
converting the input statement into an operation command of the CSV file, wherein the operation command comprises an operation type, file information and operation content;
opening a CSV file corresponding to the file information;
and operating the CSV file according to the operation command.
In one embodiment of the invention, the operation types include query, modify, add, and delete.
In an embodiment of the present invention, the operation content includes a filtering condition.
In an embodiment of the present invention, the step of converting the input sentence into an operation command of the CSV file includes:
identifying a first field in the input statement and converting the first field into an operation type;
identifying a second field in the input statement and converting the second field into file information;
and identifying a third field in the input statement and converting the third field into operation content.
In an embodiment of the present invention, the step of identifying the third field in the input sentence includes identifying a directive in the input sentence and converting the directive into a filtering condition.
In an embodiment of the present invention, the step of operating the CSV file according to the operation command includes:
determining operation content in the CSV file; and
and operating the operation content according to the operation type.
In an embodiment of the present invention, the step of determining the operation content in the CSV file includes: retrieving from the CSV file using a filter condition.
In an embodiment of the present invention, after the operating the CSV file according to the operation command, the method further includes: presenting results of the operation.
The present invention also provides an apparatus for managing CSV files, comprising a processor, a memory, and instructions stored in the memory, wherein the instructions, when executed by the processor, implement the method as described above.
Compared with the prior art, the invention has the following advantages: the invention provides a method for managing CSV files, which realizes the automatic operation of the CSV files by converting input sentences based on database language into operation commands of the CSV files, simplifies the data management of the CSV files and improves the efficiency of data processing.
Drawings
Fig. 1 is a flowchart of a method of managing CSV files according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method of querying a CSV file according to an embodiment of the present invention.
Fig. 3 is a flow diagram of a method of modifying a CSV file according to an embodiment of the invention.
Fig. 4 is a flowchart of a method of adding a CSV file according to an embodiment of the present invention.
Fig. 5 is a flowchart of a method of deleting a CSV file according to an embodiment of the present invention.
Fig. 6 is a diagram of an exemplary display interface of a method of querying a CSV file according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments disclosed below.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.
Furthermore, each of the embodiments described below has one or more technical features, and thus, the use of the technical features of any one embodiment does not necessarily mean that all of the technical features of any one embodiment are implemented at the same time or that only some or all of the technical features of different embodiments are implemented separately. In other words, those skilled in the art can selectively implement some or all of the features of any embodiment or combinations of some or all of the features of multiple embodiments according to the disclosure of the present invention and according to design specifications or implementation requirements, thereby increasing the flexibility in implementing the invention.
As introduced in the background, Comma Separated Values (CSV) files store tabular data in plain text form that can be used for data transmission between different programs or systems. The CSV file format is a general, relatively simple file format, and is widely used in the field of computers. However, the CSV file has the disadvantage that the data management is rather complicated, and the operations such as query, modification, addition or deletion cannot be conveniently performed on the data in the CSV file, which is particularly obvious in the case of large data volume of the CSV file. The invention provides a method and a device for managing CSV files, which can simplify the data management of the CSV files and improve the processing speed of data.
Fig. 1 is a flowchart of a method of managing CSV files according to an embodiment of the present invention. The method for managing CSV files comprises the following steps:
step 110: an input statement based on a database language is received.
The database Language may be a Structured Query Language (SQL). The input statement may be a statement conforming to the syntax of the SQL language, for example, the input statement may include an operation type, an operation object, and an operation content. The operation objects may include databases, tables in databases, records in database tables, and fields in database tables. The operation type may be query, modify, add, or delete.
Step 120: the input sentence is converted into an operation command of the CSV file.
This step may be implemented by a mapping converter. The SQL input statement includes a database, a table in the database, a record in the database table, and a field in the database table. The mapping translator maps the concept of the SQL input statement to the operation command of the CSV file.
For example, a database is mapped to a directory in which a CSV file is located, a table in the database is mapped to a CSV file in the directory, a record in the database table is mapped to a row of data in the CSV file, and a field in the database table is mapped to a column of data in the CSV file.
The concept of the SQL input statement may be mapped to an operation command of the CSV file by the mapping converter, and the operation command of the CSV file may include an operation type, file information, and operation content. The operation content may include a filtering condition by which an operation object may be determined. In particular, multiple fields of the SQL input statement may be identified. For example, a first field in the input sentence is recognized to convert it into the operation type, a second field in the input sentence is recognized to convert it into the file information, and a third field in the input sentence is recognized to convert it into the operation content. The step of identifying a third field in the input sentence may include identifying a referral in the input sentence and converting to a filter condition. The referral may be, for example, "where", "@", etc.
Step 130: and opening the CSV file corresponding to the file information.
In this step, the operation command of the CSV file includes file information by which the corresponding CSV file is opened. The file information may include a directory where the CSV file is located, and the directory may be a primary directory, a secondary directory, or the like. The file information is unique by which the CSV file to be processed can be confirmed.
Step 140: and operating the CSV file according to the operation command.
In this step, the operation object of the CSV file is determined and the operation object is operated according to the operation command. For example, for the operation content "set quantity is 11where 'name is material 2', the operation object is 'name is material 2'. The object of operation is determined by searching the CSV file using the screening condition 'name ═ material 2'. And then, the number of the operation object name which is the material 2' is modified to be 11, and the result is saved in the memory.
Step 150: the results of the operations are presented.
The results stored in memory may be presented for direct understanding by the user. Fig. 6 is a diagram of an exemplary display interface of a method of querying a CSV file according to an embodiment of the present invention. As shown in fig. 6, taking the query operation as an example, the query result window is located below the display interface. The query result window comprises a sliding bar, so that data can be conveniently called when the data is more. It is understood that the display interface is not limited to displaying the operation results, and may present other information as well. As shown in fig. 6, the display interface also presents a CSV file list, an SQL statement editing window, a directory window, and the like. It is to be understood that the layout of each window is not limited to that shown in fig. 6, and the layout of each window may be adjusted as needed.
Flow charts are used herein to illustrate operations performed by methods according to embodiments of the present application. It should be understood that the preceding operations are not necessarily performed in the exact order in which they are performed. Rather, various steps may be processed in reverse order or simultaneously. Meanwhile, other operations are added to or removed from these processes. For example, step 150 is not required for the present application and may be omitted, or replaced with another step.
The invention provides a method for managing CSV files, which realizes the automatic operation of the CSV files by converting input sentences based on database language into operation commands of the CSV files, simplifies the data management of the CSV files and improves the efficiency of data processing.
Example one
Fig. 2 is a flowchart of a method of querying a CSV file according to an embodiment of the present invention.
For a CSV format file named "bill of materials" under the inventory directory, the contents are as follows:
number, name, unit price, quantity
1, materials 1, 12.0, 22
2, materials 2, 21.0, 32
3, materials 3, 33.0, 25
As shown in fig. 2, the steps of the method for querying a CSV file include:
step 210: an SQL query statement is received. The SQL query statement is "select name, unit price from inventory" bill of materials "unit price < 22.0", which is a query for records in the "inventory. bill of materials" file with a price below 22.0.
Step 220: and converting the SQL query statement into an operation command of the CSV file. The mapping converter converts SQL query statement ' select name, unit price from stock ' bill of materials ' unit price <22.0 ' into CSV operation command, in which the operation type is query, the file information is ' stock ' bill of materials ' and the operation content includes the screening condition ' unit price <22.0 '.
Step 230: and opening the CSV file corresponding to the file information. In the CSV operation command, the file information is 'stock, bill of material', and a CSV file with the file name 'stock, bill of material' is opened.
Step 240: a query operation is performed on the CSV file. After opening the CSV file with the file name "stock, bill of materials" each line of data of "stock, bill of materials" is queried according to the screening condition "unit price < 22.0", and if the line satisfies the screening condition "unit price < 22.0", the "name, unit price" of the line is added to the result set.
Step 250: the results of the operations are presented. The result set satisfying the screening condition "unit price < 22.0" is as follows:
name, unit price
Materials 1, 12.0
Materials 2, 21.0
The embodiment of the invention provides a method for querying a CSV file, which realizes the automatic query of the CSV file by converting an input statement based on a database language into a query command of the CSV file, simplifies the data management of the CSV file and improves the efficiency of data processing.
Example two
Fig. 3 is a flow diagram of a method of modifying a CSV file according to an embodiment of the invention.
For a CSV format file named "bill of materials" under the inventory directory, the contents are as follows:
number, name, unit price, quantity
1, materials 1, 12.0, 22
2, materials 2, 21.0, 32
3, materials 3, 33.0, 25
As shown in fig. 3, the steps of the method of modifying a CSV file include:
step 310: an SQL modification statement is received. The SQL modify statement is "update stock. bill of materials" set quantity is 11where name is "material 2'", and the modify statement is to modify the quantity of material 2 in the "stock. bill of materials" file to 11.
Step 320: and converting the SQL modification statement into an operation command of the CSV file. The mapping converter converts an SQL modification statement "update stock, material list set number 11 work name ═ Material 2' ″ into a CSV operation command, in the CSV operation command, the operation type is modification, the file information is" stock.
Step 330: and opening the CSV file corresponding to the file information. In the CSV operation command, the file information is 'stock, bill of material', and a CSV file with the file name 'stock, bill of material' is opened.
Step 340: a modify operation is performed on the CSV file. After opening the CSV file having the file name "stock. bill of materials", each line of data of the "stock. bill of materials" is screened according to the screening condition "name ═ material 2 '", if the line satisfies the screening condition "name ═ material 2'", the number of the line is modified to 11, and the modification result is saved.
Step 350: the results of the operations are presented. The result of modifying the amount of material 2 to 11 is as follows:
number, name, unit price, quantity
1, materials 1, 12.0, 22
2, materials 2, 21.0, 11
3, materials 3, 33.0, 25
The embodiment of the invention provides a method for modifying a CSV file, which realizes the automatic modification of the CSV, simplifies the operation process and improves the data processing efficiency by converting the input sentence based on the database language into the modification command of the CSV file.
EXAMPLE III
Fig. 4 is a flowchart of a method of adding a CSV file according to an embodiment of the present invention.
For a CSV format file named "bill of materials" under the inventory directory, the contents are as follows:
number, name, unit price, quantity
1, materials 1, 12.0, 22
2, materials 2, 21.0, 32
3, materials 3, 33.0, 25
As shown in fig. 4, the steps of the method of adding a CSV file include:
step 410: an SQL add statement is received. The SQL add statement is "insert inventory. bills of materials values (4, 22.0, 18)", and the add statement is to add a line of data "4, 22.0, 18" to the "inventory. bill of materials" file.
Step 420: and converting the SQL adding statement into an operation command of the CSV file. The mapping converter converts an SQL adding statement "insert inventory. bill of materials (4, 22.0, 18)" into a CSV operation command, wherein the operation type is adding, the file information is "inventory. bill of materials", and the operation content is "values (4, 22.0, 18)".
Step 430: and opening the CSV file corresponding to the file information. In the CSV operation command, the file information is 'stock, bill of material', and a CSV file with the file name 'stock, bill of material' is opened.
Step 440: an add operation is performed on the CSV file. After opening the CSV file with the file name "stock. bill of materials", data "4, material 4, 22.0, 18" is added in the last line of the file, and the addition result is saved.
Step 450: the results of the operations are presented. The results for the addition data "4, feed 4, 22.0, 18" are as follows:
number, name, unit price, quantity
1, materials 1, 12.0, 22
2, materials 2, 21.0, 11
3, materials 3, 33.0, 25
4, materials 4, 22.0, 18
The embodiment of the invention provides a method for adding a CSV file, which realizes the automatic addition of the CSV file by converting an input statement based on a database language into an addition command of the CSV file, simplifies the data management of the CSV file and improves the efficiency of data processing.
Example four
Fig. 5 is a flowchart of a method of deleting a CSV file according to an embodiment of the present invention.
Under the inventory directory is a CSV format file named "bill of materials" whose contents are as follows.
Number, name, unit price, quantity
1, materials 1, 12.0, 22
2, materials 2, 21.0, 32
3, materials 3, 33.0, 25
4, materials 4, 22.0, 18
The method for deleting the CSV file comprises the following steps:
step 510: an SQL delete statement is received. The SQL delete statement is "delete from stock" with the bill of materials where number is 4 ", and deletes a line of data with number 4 from the" stock.
Step 520: and converting the SQL deletion statement into an operation command of the CSV file. The mapping converter converts an SQL delete statement "delete from inventory, bill of material, where the number is 4" into a CSV operation command, where the operation type is delete, the file information is "inventory, bill of material", and the operation content is "where the number is 4" in the CSV operation command.
Step 530: and opening the CSV file corresponding to the file information. In the CSV operation command, the file information is 'stock, bill of material', and a CSV file with the file name 'stock, bill of material' is opened.
Step 540: a delete operation is performed on the CSV file. After opening the CSV file with the file name "stock. bill of materials", a row of data numbered 4 in the file is screened and deleted, and the deletion result is saved.
Step 550: the results of the operations are presented. The result of deleting one line of data numbered 4 is as follows:
number, name, unit price, quantity
1, materials 1, 12.0, 22
2, materials 2, 21.0, 11
3, materials 3, 33.0, 25
The embodiment of the invention provides a method for deleting a CSV file, which realizes the automatic deletion of the CSV file by converting an input statement based on a database language into a deletion command of the CSV file, simplifies the data management of the CSV file and improves the efficiency of data processing.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The various illustrative logical modules, and circuits described in connection with the embodiments disclosed herein may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
Although the present invention has been described with reference to the present specific embodiments, it will be appreciated by those skilled in the art that the above embodiments are merely illustrative of the present invention, and various equivalent changes and substitutions may be made without departing from the spirit of the invention, and therefore, it is intended that all changes and modifications to the above embodiments within the spirit and scope of the present invention be covered by the appended claims.
Claims (9)
1. A method of managing CSV files, comprising the steps of:
receiving an input sentence based on a database language;
converting the input statement into an operation command of the CSV file, wherein the operation command comprises an operation type, file information and operation content;
opening a CSV file corresponding to the file information;
and operating the CSV file according to the operation command.
2. The method of managing CSV files of claim 1, wherein the operation types include query, modify, add, and delete.
3. The method of managing CSV files according to claim 1 or 2, wherein the operation content comprises a filter condition.
4. The method of managing CSV files according to claim 1, wherein the step of converting the input sentence into an operation command of the CSV file comprises:
identifying a first field in the input statement and converting the first field into an operation type;
identifying a second field in the input statement and converting the second field into file information;
and identifying a third field in the input statement and converting the third field into operation content.
5. The method of claim 4, wherein identifying the third field in the input sentence comprises identifying a referral in the input sentence and converting to a filter condition.
6. The method for managing CSV files according to claim 1 or 2, wherein the step of operating the CSV files according to the operation command comprises:
determining an operation object in the CSV file; and
and operating the operation object according to the operation command.
7. The method of claim 6, wherein the step of determining the operation object in the CSV file comprises: retrieving from the CSV file using a filter condition.
8. The method of claim 1, wherein the operating the CSV file according to the operation command further comprises: presenting results of the operation.
9. An apparatus to manage CSV files, comprising a processor, a memory, and instructions stored in the memory, wherein the instructions, when executed by the processor, implement the method of any of claims 1-9.
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