WO2020211258A1

WO2020211258A1 - Blockchain account book data query method, electronic apparatus and storage medium

Info

Publication number: WO2020211258A1
Application number: PCT/CN2019/103764
Authority: WO
Inventors: 汪昌帅
Original assignee: 平安科技（深圳）有限公司
Priority date: 2019-04-17
Filing date: 2019-08-30
Publication date: 2020-10-22
Also published as: CN110162540B; CN110162540A

Abstract

Disclosed are a blockchain account book data query method, an electronic apparatus and a storage medium. The method comprises: acquiring a query request, wherein the query request carries a page number of a target page (101); acquiring a keyword set corresponding to the page number of the target page from a blockchain account book according to the page number of the target page, wherein there are one or more keywords in the keyword set (102); acquiring a value corresponding to each keyword in the keyword set from the blockchain account book (103); combining the acquired keyword set and the value corresponding to each keyword in the keywords (104); and taking a combination result as a query result, and returning the query result (105). By means of the method, the existing technical problem of data in a blockchain account book being unable to be queried by page is solved, the aim of effectively querying by page is achieved, and thus the querying and accounting efficiency of a blockchain account book can be effectively improved.

Description

Block chain ledger data query method, electronic device and storage medium

This application affirms that it enjoys the priority of the Chinese patent application with the application number CN201910308012.3 and the name "Blockchain ledger data query method, electronic device and storage medium" filed on April 17, 2019. The entire Chinese patent application The content is incorporated in this application by reference.

Technical field

This application relates to the field of database technology, in particular to a method for querying blockchain ledger data, an electronic device and a storage medium.

Background technique

With the continuous development of blockchain technology, more and more people have begun to study blockchain technology, and the application of blockchain technology has become more and more extensive. For the blockchain, the Fabric K-V ledger is a very important component of the blockchain technology.

The inventor realizes that the processing efficiency of the accounting and query function operations of the blockchain ledger will directly affect the efficiency and usage of the blockchain system. However, the existing blockchain ledger does not support page-by-page query. In this way, it will greatly affect the efficiency of blockchain ledger accounting and query.

In view of the above problems, no effective solutions have been proposed yet.

Summary of the invention

The purpose of this application is to provide a query method, electronic device and storage medium for blockchain ledger data, so as to solve the existing technical problems of low query and accounting efficiency caused by the inability to query by page.

This application solves the above technical problems through the following technical solutions:

According to one aspect of this application, a method for querying blockchain ledger data is provided, which includes the following steps:

Acquiring a query request, where the query request carries the page number of the target page;

According to the page number of the target page, obtain a keyword set corresponding to the page number of the target page from the blockchain ledger, where one or more keywords exist in the keyword set;

Obtaining the value corresponding to each keyword in the keyword set from the blockchain ledger;

Combine the acquired keyword set and the corresponding value of each keyword in the keyword;

The combined result is used as the query result, and the query result is returned.

According to another aspect of the present application, there is provided an electronic device, including a memory and a processor, the memory is used to store a query system for blockchain ledger data that can be executed by the processor, the blockchain ledger The data query system includes:

The first obtaining module is configured to obtain a query request, wherein the query request carries the page number of the target page;

The second obtaining module is configured to obtain a keyword set corresponding to the page number of the target page from the blockchain ledger according to the page number of the target page, wherein one or more keywords exist in the keyword set;

The third obtaining module is configured to obtain the value corresponding to each keyword in the keyword set from the blockchain ledger;

The combination module is used to combine the acquired keyword set and the corresponding value of each keyword in the keyword;

The return module is used to take the combined result as the query result and return the query result.

According to another aspect of the present application, there is provided a computer device, including a memory and a processor, the processor is configured to execute the following steps:

According to one aspect of the present application, there is provided a non-volatile computer-readable storage medium, on which computer instructions are stored, and the following steps are implemented when the instructions are executed:

This application obtains the query request carrying the page number of the target page, and obtains the keyword set corresponding to the page number of the target page from the blockchain ledger according to the page number of the target page, where one or more keywords exist in the keyword set Get the value corresponding to each keyword in the keyword set from the blockchain ledger; combine the obtained keyword set and the corresponding value of each keyword in the keyword; use the combined result as the query result and return The query result. Through the above method, the existing technical problem that the data in the blockchain ledger cannot be queried by page is solved, and the purpose of effectively realizing the data query by page is achieved, thereby effectively improving the query and accounting efficiency of the blockchain ledger. .

Description of the drawings

Fig. 1 is a method flowchart of a method for querying blockchain ledger data according to an embodiment of the present application;

2 is a structural block diagram of a query system for blockchain ledger data according to an embodiment of the present application;

Fig. 3 is a schematic diagram of an optional hardware architecture of an electronic device according to an embodiment of the present application.

detailed description

In order to make the purpose, technical solutions, and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application, and not used to limit the application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

Taking into account the low efficiency of accounting and querying of the existing blockchain (Fabric) KV ledger, the main reason is that the blockchain (Fabric) KV ledger does not have page accounting and query functions. If the blockchain (Fabric) can be adjusted The storage method of the KV ledger enables the Blockchain (Fabric) KV ledger to realize the paging management of data, which can effectively improve the efficiency of accounting and query of the Blockchain (Fabric) KV ledger.

For this reason, in this example, a method and electronic device for querying blockchain ledger data are provided. The method and electronic device are specifically described as follows:

Example one

The method for querying the blockchain ledger data provided in this application will be described below in conjunction with the accompanying drawings.

Figure 1 is a schematic diagram of an optional flow chart of the query method for blockchain ledger data of this application. As shown in Figure 1, the method may include the following steps:

Step 101: Obtain a query request, where the query request carries the page number of the target page;

Step 102: According to the page number of the target page, obtain a keyword set corresponding to the page number of the target page from the blockchain ledger, where one or more keywords exist in the keyword set;

Step 103: Obtain the value corresponding to each keyword in the keyword set from the blockchain ledger;

Step 104: Combine the acquired keyword set and the corresponding value of each keyword in the keyword;

Step 105: Use the combined result as the query result, and return the query result.

Specifically, the above-mentioned blockchain ledger can be established as follows, so as to realize the paging management of the blockchain ledger:

S1: Obtain the establishment rules of the blockchain ledger, where the establishment rules include a limit on the number of items per page;

For example, you can set the upper limit of the number of data items per page to 10, then after the first page has stored ten pieces of data, when there is another eleventh piece of data to be stored, the eleventh piece of data is taken as the first The first data of the second page is stored in. Among them, the page can be understood as a virtual concept, not the actual partition of the database, but the data divided into one page by one page.

S2: Obtain a piece of data to be written into the blockchain ledger, where the piece of data to be written into the blockchain ledger includes: keywords and values;

That is, each piece of data may include a pair of K-V values, that is, include a keyword and a value corresponding to the keyword, for example, the keyword is Zhang San, and the corresponding value is 400 yuan. Among them, a keyword can also correspond to two or more values, then this keyword and multiple values can be used as a key-value pair, that is, a piece of data storage.

S3: Obtain the number of currently written data pages and the number of data written on the current page of the blockchain ledger;

In actual implementation, an area or field can be specifically delineated in the blockchain ledger to store the pages that have been currently written, and the current number of pages that have been written into several pieces of data.

S4: Determine whether the number of data items written in the current page reaches the limit number of items per page;

That is, after reading the current page number and several pieces of data have been written, it can be determined to compare with the limit number to determine whether the current page is full of data.

S4: In the case where it is determined that it is not reached, write the piece of data to be written into the blockchain ledger into the current page;

S5: When it is determined that the number of data items written on the current page reaches the limit number of items per page, the page number of the current page is increased by 1, as the next page;

S6: Record the page number of the next page and the number of data written in the next page in the blockchain ledger, record the key of the data to be written in the blockchain ledger, and add the A key word of data to be written into the blockchain ledger is associated with the page number of the next page.

S7: Record the page number of the next page and the number of data written in the next page in the blockchain ledger.

For example, limit the number of entries per page to a maximum of 2, and the stored data is <Zhang San, 200> and the data to be stored is <Li Si, 400>. Therefore, the metadata value can be obtained as 1,1 (where metadata indicates which page has been stored currently, and how many pieces of data have been stored on this page), based on the metadata value 1,1 can be determined, and the first page has been stored currently The first piece of data, because 1 is less than 2, indicating that the current first page is not full, therefore, the value of page1 can be updated to: <page1,[张三,李四]>, after completion, update the metadata value [1,2]; Then, the data of <Li Si, 400> is added to the database to realize the accounting requirements of the blockchain ledger.

Based on the blockchain ledger established by this paging, paging query can also be performed.

The above method will be described below in conjunction with a specific embodiment. However, it is worth noting that this specific embodiment is only for better describing the application, and does not constitute an improper limitation of the application.

For the blockchain ledger, the following content can be created to realize effective accounting and query on the blockchain ledger:

1) Create <cpage, <pagenum&datanum>>, and store the actually stored page number and the number of data items in the page number through <cpage, <pagenum&datanum>>;

That is, a part of the field or space is divided to record the page number of the page currently stored to and the number of data items already stored on the current page.

2) Create <<pagenum>, <key1>>, <<pagenum>, <key2>>, <<pagenum>, <key3>>...Keywords used to store the data stored in the data page corresponding to each page number .

That is, a part of the field or space is divided to store keywords corresponding to each page of data.

3) Create <<key1>, <data1>>, <<key2>, <data2>>, <<key3>, <data3>>... to store the actual data value corresponding to the keyword.

That is, set the actual data value corresponding to each keyword.

Based on the above data content storage method, the following operations can be performed to realize the accounting and query functions of the blockchain ledger:

1) New data can include the following steps:

S1: Read cpage to obtain the currently stored page number;

S2: Insert the current data into the currently stored page number, and datanum+1 after completion. If datanum reaches the maximum data amount of the page number at the design time, then pagenum+1 and datanum is set to 0, that is, the value of cpage is updated;

That is, it is determined whether the maximum amount of data has been stored in the current page, if the maximum amount of data has not been stored, then the storage is stored, and if the maximum amount of data is stored, the storage is moved to the next page.

S3: Store the key (keyword)-value (value) data corresponding to the current data.

2) Query data, which can include the following steps:

S1: Obtain query parameters from the query request, where the query parameter is the page number pagenum;

S2: Get all the key values in pagenum;

S3: Query the value values corresponding to all the key values in the pagenum, thereby obtaining and returning the data of a page corresponding to the pagenum page.

That is, the keyword query operation based on the page number can be completed through the stored page number and the keyword corresponding to the page number.

Through the above method, it is possible to pass in the page number parameter when querying the blockchain ledger (Fabric), and return all the data of the page.

Specifically, a paging design is adopted for the K-V database in the blockchain ledger, and the data on the ledger can be divided into three categories as shown in Table 1 below according to functions: metadata category, pagenum category, and actual business data records.

Table 1

Let's take a specific example to illustrate: The account balances of Zhang San, Li Si, and Wang Wu are 300, 400, and 500 yuan respectively. Then the actual business data key-value pairs are shown in Table 2 below:

Table 2

K值K value	V值V value
张三Zhang San	300300
李四Li Si	400400
王五Wang Wu	500500

Assuming that the number of data items per page is specified as 2, then these three pieces of data need to be stored in 2 pages, 2 pieces of data on the first page, and 1 piece of data on the second page. Assuming that the number of data items in the current database is 0, the page number starts from 1, and the number of items starts from 0, then the corresponding values of metadata are shown in Table 3 below:

table 3

K值K value	V值V value
metadatametadata	1，01, 0

At this time, the K-V value records of the pagenum attribute are all empty.

Then, you can proceed as follows:

1) New data

Add <Zhang San, 300> record:

S1: Check whether the Zhang San record exists, if it exists, update it directly, otherwise continue;

S2: Get the metadata value as 1,0; that is, it is on page 1 and contains 0 pieces of data. This is the initial state.

S3: Start recording data from the first page. At this time, page1 is added, and the data of Zhang San is placed on page1, so there is new data <page1, Zhang San>. After completion, the metadata value is updated to [1,1], which means the current Page is the first page and a piece of data is stored on the first page;

S4: Add the data of <Zhang San, 300> to the database. After completion, the database is shown in Table 4 below:

Table 4

K值K value	V值V value
metadatametadata	1,11,1
page1page1	张三Zhang San
张三Zhang San	300300

Add <Li Si, 400> record:

S1: Check whether the Li Si record exists, if it exists, update it directly, otherwise continue;

S2: Get the metadata value as 1,1, check that the number of data items in page1 at this time is 1, which is less than 2;

S3: Add the value of page1, <page1,[Zhang San, Li Si]>, after completion, update the metadata value to [1,2];

S4: Add the data of <Li Si, 400> to the database. After completion, the database is shown in Table 5 below:

table 5

K值K value	V值 V value

metadatametadata	1,21,2
page1page1	张三，李四Zhang San, Li Si
张三Zhang San	300300
李四Li Si	400400

Add <Wang Wu, 500> record:

S1: Check whether the king five record exists, if it exists, update it directly, otherwise continue;

S2: Get the metadata value to be 1, and check that the number of data in page1 is 2, which is equal to 2;

S3: Add page2, <page2, Wang Wu>, update the metadata value after completion to [2,1]

S4: Add the data of <王五,500> to the database. After completion, the database is shown in Table 6 below:

Table 6

K值K value	V值 V value

metadatametadata	2,12,1
page1page1	张三，李四Zhang San, Li Si
page2page2	王五Wang Wu
张三Zhang San	300300
李四Li Si	400400
王五Wang Wu	500500

2) Query data

Query all pages:

S1: The obtained metadata data is 2, 1, and it can be determined that there are 2 pages of data in the database at this time;

S2: Obtain the key value sets in page1 and page2 respectively, and then obtain the value value set corresponding to the key value set;

S3: The data set combined into page1 and page2 is returned;

S4: Obtain the value set of page1 as [Zhang San, Li Si], obtain the value of Zhang San as 300, and obtain the value of Li Si as 400;

S5: Obtain the page2 value set as [Wang Wu], and obtain the Wang Wu value as 500;

S6: Then combine the obtained results to get:

Query a page of data: (for example: query the data of the second page, the input parameter is 2)

S1: Get the key value set in page2, and then get the value value set corresponding to the key value set;

S2: Return the data set combined into page2;

That is, the acquired page2 value set is [王五], and the acquired Wang five value is 500.

S3: Combined result

Query specified K value data:

S1: Pass in the K value (that is, the user name to be queried), directly query the value corresponding to the user name, and combine it into a K-V value to return;

For example: Enter Li Si, and the query will get the balance of Li Si as 400.

S2: Combination returns:

{

Li Si: 400

}

In the above example, the actual stored page number and the number of data items already stored in the page number are stored in the blockchain ledger, as well as the key value of all the data contained in the page number and the data value corresponding to each key value. In this way, the existence of data based on page number is realized, so that when the blockchain fabric is inquired, the page number parameter is passed in, and all the data of the page can be returned. Through the above method, the problem of low storage and query efficiency caused by the existing blockchain ledger not supporting paging query is solved, and the technical effect of effectively improving the efficiency of blockchain ledger storage and query is achieved.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better.的实施方式。

Example two

Based on the blockchain ledger data query method provided in the first embodiment above, this embodiment provides a blockchain ledger data query system. Specifically, Figure 2 shows the blockchain ledger data query system The optional structural block diagram of the blockchain ledger data query system is divided into one or more program modules, one or more program modules are stored in a storage medium and executed by one or more processors, To complete this application. The program module referred to in this application refers to a series of computer program instruction segments that can complete specific functions. It is more suitable than the program itself to describe the execution process of the blockchain ledger data query system in the storage medium. The following description will specifically introduce this implementation Examples of the functions of each program module:

As shown in Figure 2, the blockchain ledger data query system 20 may include:

The first obtaining module 201 is configured to obtain a query request, wherein the query request carries the page number of the target page;

The second obtaining module 202 is configured to obtain a keyword set corresponding to the page number of the target page from the blockchain ledger according to the page number of the target page, where one or more keywords exist in the keyword set;

The third obtaining module 203 is configured to obtain the value corresponding to each keyword in the keyword set from the blockchain ledger;

The combination module 204 is configured to combine the acquired keyword set and the corresponding value of each keyword in the keyword;

The return module 205 is configured to use the combined result as the query result and return the query result.

In an embodiment, the above-mentioned device may further include: an establishment module for establishing the blockchain ledger in the following manner:

S5: In the case of determining that it is not reached, write the piece of data to be written into the blockchain ledger into the current page;

S6: Record the page number of the current page and the number of data items written in the current page in the blockchain ledger.

In an embodiment, the above-mentioned establishment module may also be used to determine whether the number of data items written in the current page reaches the limit number of items per page, and after determining whether the number of data items written in the current page reaches the limit number per page In the case of the number of entries, add 1 to the page number of the current page as the next page; write the piece of data to be written into the blockchain ledger to the next page; record the next page in the blockchain ledger The page number and the number of data written in the next page.

In one embodiment, the above-mentioned establishment module may also be used to record the keyword of the piece of data to be written into the blockchain ledger after writing the piece of data to be written into the blockchain ledger into the next page , And associate the key of the piece of data to be written into the blockchain ledger with the page number of the next page.

Regarding the device in the foregoing embodiment, the specific manner in which each unit and module perform operations has been described in detail in the embodiment related to the method, and will not be elaborated here.

In each implementation of this embodiment, the query request carrying the page number of the target page is obtained, and the keyword set corresponding to the page number of the target page is obtained from the blockchain ledger according to the page number of the target page, where the keyword There are one or more keywords in the set; obtain the value corresponding to each keyword in the keyword set from the blockchain ledger; combine the obtained keyword set with the corresponding value of each keyword in the keyword; The combined result is used as the query result, and the query result is returned. Through the above method, the existing technical problem that the data in the blockchain ledger cannot be queried by page is solved, and the purpose of effectively realizing the data query by page is achieved, thereby effectively improving the query and accounting efficiency of the blockchain ledger. .

Example three

In the third preferred embodiment of the present application, an electronic device is provided. FIG. 3 is a schematic diagram of the hardware architecture of an embodiment of the electronic device according to the present application. In this embodiment, the electronic device 2 is a device that can automatically perform numerical calculation and/or information processing according to pre-set or stored instructions. For example, it can be a smart phone, a tablet computer, a notebook computer, a desktop computer, a rack server, a blade server, a tower server, or a cabinet server (including an independent server or a server cluster composed of multiple servers). As shown in the figure, the electronic device 2 at least includes, but is not limited to, a memory 21, a processor 22, a network interface 23, and a blockchain ledger data query system 20 that can communicate with each other through a system bus. among them:

The memory 21 includes at least one type of computer-readable storage medium. The readable storage medium includes flash memory, hard disk, multimedia card, card-type memory (for example, SD or DX memory, etc.), random access memory (RAM), and static random access memory. (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, magnetic disk, optical disk, etc. In some embodiments, the memory 21 may be an internal storage module of the electronic device 2, such as a hard disk or a memory of the electronic device 2. In other embodiments, the memory 21 may also be an external storage device of the electronic device 2, such as a plug-in hard disk, a smart media card (SMC), and a secure digital (Secure Digital, SD card, Flash Card, etc. Of course, the memory 21 may also include both an internal storage module of the electronic device 2 and an external storage device thereof. In this embodiment, the memory 21 is generally used to store the operating system and various application software installed in the electronic device 2, for example, the program code of the query system 20 for blockchain ledger data. In addition, the memory 21 can also be used to temporarily store various types of data that have been output or will be output.

The processor 22 may be a central processing unit (Central Processing Unit, CPU), a controller, a microcontroller, a microprocessor, or other data processing chips in some embodiments. The processor 22 is generally used to control the overall operation of the electronic device 2, for example, perform data interaction or communication-related control and processing with the electronic device 2. In this embodiment, the processor 22 is used to run the program code or process data stored in the memory 21, such as the running blockchain ledger data query system 20 and so on.

The network interface 23 may include a wireless network interface or a wired network interface, and the network interface 23 is generally used to establish a communication connection between the electronic device 2 and other electronic devices. For example, the network interface 23 is used to connect the electronic device 2 with an external terminal through a network, and establish a data transmission channel and a communication connection between the electronic device 2 and the external terminal. The network can be corporate intranet (Intranet), Internet (Internet), Global System of Mobile communication (GSM), Wideband Code Division Multiple Access (WCDMA), 4G network, 5G network, Wireless or wired networks such as Bluetooth and Wi-Fi.

It should be pointed out that FIG. 3 only shows an electronic device with components 21-23, but it should be understood that it is not required to implement all the components shown, and more or fewer components may be implemented instead.

In this embodiment, the query system 20 for blockchain ledger data stored in the memory 21 can also be divided into one or more program modules, one or more program modules are stored in the memory 21, and are composed of one or more program modules. Multiple processors (in this embodiment, the processor 22) are executed to complete the application.

Example four

This embodiment also provides a non-volatile computer-readable storage medium. The computer-readable storage medium stores a query system for blockchain ledger data. The query system for blockchain ledger data can be executed by at least one processor. , At least one processor implements the steps of the following method when executing: obtaining a query request, where the query request carries the page number of the target page; according to the page number of the target page, the keyword corresponding to the page number of the target page is obtained from the blockchain ledger Set, where one or more keywords exist in the keyword set; obtain the value corresponding to each keyword in the keyword set from the blockchain ledger; combine the obtained keyword set and the corresponding value of each keyword in the keyword; Use the combined result as the query result and return the query result.

In this embodiment, the computer-readable storage medium includes flash memory, hard disk, multimedia card, card-type memory (for example, SD or DX memory, etc.), random access memory (RAM), static random access memory (SRAM), read only memory ( ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, magnetic disk, optical disk, etc. In some embodiments, the computer-readable storage medium may be an internal storage unit of a computer device, such as a hard disk or memory of the computer device. In some other embodiments, the computer-readable storage medium may also be an external storage device of the computer device, such as a plug-in hard disk, a smart media card (SMC), and a secure digital (Secure Digital) equipped on the computer device. , SD) card, flash card (Flash Card), etc. Of course, the computer-readable storage medium may also include both the internal storage unit and the external storage device of the computer device. In this embodiment, the computer-readable storage medium is generally used to store the operating system and various application software installed in the computer device, such as the program code of the customer assurance analysis system in the second embodiment. In addition, the computer-readable storage medium can also be used to temporarily store various types of data that have been output or will be output.

Obviously, those skilled in the art should understand that the modules or steps of the above-mentioned embodiments of the application can be implemented by a general computing device, and they can be concentrated on a single computing device or distributed among multiple computing devices. Optionally, they can be implemented with program codes executable by a computing device, so that they can be stored in a storage device for execution by the computing device, and in some cases, can be different from here The steps shown or described are executed in the order of, or they are respectively fabricated into individual integrated circuit modules, or multiple modules or steps of them are fabricated into a single integrated circuit module to achieve. In this way, the embodiments of the present application are not limited to any specific hardware and software combination.

The above are only preferred embodiments of this application, and do not limit the scope of this application. Any equivalent structure or equivalent process transformation made using the content of the description and drawings of this application, or directly or indirectly used in other related technical fields , The same reason is included in the scope of patent protection of this application.

Claims

A method for querying blockchain ledger data is characterized in that it comprises the following steps:

Acquiring a query request, where the query request carries the page number of the target page;

According to the page number of the target page, obtain a keyword set corresponding to the page number of the target page from the blockchain ledger, where one or more keywords exist in the keyword set;

Obtaining the value corresponding to each keyword in the keyword set from the blockchain ledger;

Combine the acquired keyword set and the corresponding value of each keyword in the keyword;

The combined result is used as the query result, and the query result is returned.
The method according to claim 1, wherein the establishment of the blockchain ledger in the following manner includes:

Obtain the establishment rules of the blockchain ledger, where the establishment rules include a limit on the number of items per page;

Acquiring a piece of data to be written into the blockchain ledger, where the piece of data to be written into the blockchain ledger includes: keywords and values;

Obtaining the number of data pages currently written in the blockchain ledger and the number of data items written in the current page;

Determine whether the number of data items written on the current page has reached the limit on each page;

If it is determined that it is not reached, write the piece of data to be written into the blockchain ledger into the current page;

The page number of the current page and the number of data items written in the current page are recorded in the blockchain ledger.
The method according to claim 2, wherein after determining whether the number of data items written in the current page reaches the limit number of items per page, the method further comprises:

When it is determined that the number of data items written on the current page has reached the limit number of items per page, the page number of the current page is increased by 1, as the next page;

Write the piece of data to be written into the blockchain ledger into the next page;

The page number of the next page and the number of data items written in the next page are recorded in the blockchain ledger.
The method according to claim 3, wherein after writing the piece of data to be written into the blockchain ledger into the next page, the method further comprises:

Record the key of the piece of data to be written into the blockchain ledger, and associate the key of the piece of data to be written into the blockchain ledger with the page number of the next page.
The method according to claim 3, wherein recording the page number of the current page and the number of data items written in the current page in the blockchain ledger includes:

Part of the fields or space is divided in the blockchain ledger to record the page number of the current page and the number of data written in the current page.
An electronic device includes a memory and a processor, wherein the memory is used to store a query system for blockchain ledger data that can be executed by the processor, and the blockchain ledger data query system includes:

The first obtaining module is configured to obtain a query request, wherein the query request carries the page number of the target page;

The second obtaining module is configured to obtain a keyword set corresponding to the page number of the target page from the blockchain ledger according to the page number of the target page, wherein one or more keywords exist in the keyword set;

The third obtaining module is configured to obtain the value corresponding to each keyword in the keyword set from the blockchain ledger;

The combination module is used to combine the acquired keyword set and the corresponding value of each keyword in the keyword;

The return module is used to take the combined result as the query result and return the query result.
The device according to claim 6, further comprising:

The establishment module is used to establish the blockchain ledger in the following manner:

Obtain the establishment rules of the blockchain ledger, where the establishment rules include a limit on the number of items per page;

Acquiring a piece of data to be written into the blockchain ledger, where the piece of data to be written into the blockchain ledger includes: keywords and values;

Obtaining the number of data pages currently written in the blockchain ledger and the number of data items written in the current page;

Determine whether the number of data items written on the current page has reached the limit on each page;

If it is determined that it is not reached, write the piece of data to be written into the blockchain ledger into the current page;

The page number of the current page and the number of data items written in the current page are recorded in the blockchain ledger.
7. The device according to claim 7, wherein the establishing module is further configured to determine whether the number of data written in the current page reaches the limit of the number of data per page, after determining whether the number of data written in the current page When the number of entries reaches the limit of the number of entries per page, the page number of the current page is increased by 1, as the next page;

Write the piece of data to be written into the blockchain ledger into the next page;

The page number of the next page and the number of data items written in the next page are recorded in the blockchain ledger.
The device according to claim 8, wherein the establishment module is further configured to record the piece of data to be written into the block chain after writing the piece of data to be written into the blockchain ledger into the next page The key of the data of the chain ledger, and the key of the piece of data to be written into the blockchain ledger is associated with the page number of the next page.
The device according to claim 7, wherein the establishment module is specifically configured to divide a part of fields or spaces in the blockchain ledger for recording the page number of the current page and the data strips written in the current page number.
A computer device includes a memory and a processor, wherein the processor is used to execute the following steps:

Acquiring a query request, where the query request carries the page number of the target page;

According to the page number of the target page, obtain a keyword set corresponding to the page number of the target page from the blockchain ledger, where one or more keywords exist in the keyword set;

Obtaining the value corresponding to each keyword in the keyword set from the blockchain ledger;

Combine the acquired keyword set and the corresponding value of each keyword in the keyword;

The combined result is used as the query result, and the query result is returned.
The computer device according to claim 11, wherein the establishment of the blockchain ledger in the following manner includes:

Obtain the establishment rules of the blockchain ledger, where the establishment rules include a limit on the number of items per page;

Acquiring a piece of data to be written into the blockchain ledger, where the piece of data to be written into the blockchain ledger includes: keywords and values;

Obtaining the number of data pages currently written in the blockchain ledger and the number of data items written in the current page;

Determine whether the number of data items written on the current page has reached the limit on each page;

If it is determined that it is not reached, write the piece of data to be written into the blockchain ledger into the current page;

The page number of the current page and the number of data items written in the current page are recorded in the blockchain ledger.
The computer device according to claim 12, wherein after determining whether the number of data pieces written in the current page reaches the limit number of pieces per page, the method further comprises:

When it is determined that the number of data items written on the current page has reached the limit number of items per page, the page number of the current page is increased by 1, as the next page;

Write the piece of data to be written into the blockchain ledger into the next page;

The page number of the next page and the number of data items written in the next page are recorded in the blockchain ledger.
The computer device according to claim 13, wherein after the piece of data to be written into the blockchain ledger is written into the next page, it further comprises:

Record the key of the piece of data to be written into the blockchain ledger, and associate the key of the piece of data to be written into the blockchain ledger with the page number of the next page.
The computer device according to claim 13, wherein recording the page number of the current page and the number of data items written in the current page in the blockchain ledger includes:

Part of the fields or space is divided in the blockchain ledger to record the page number of the current page and the number of data written in the current page.
A non-volatile computer-readable storage medium having computer instructions stored thereon, characterized in that, when the instructions are executed, the steps of the following method are implemented:

Acquiring a query request, where the query request carries the page number of the target page;

According to the page number of the target page, obtain a keyword set corresponding to the page number of the target page from the blockchain ledger, where one or more keywords exist in the keyword set;

Obtaining the value corresponding to each keyword in the keyword set from the blockchain ledger;

Combine the acquired keyword set and the corresponding value of each keyword in the keyword;

The combined result is used as the query result, and the query result is returned.
The non-volatile computer-readable storage medium according to claim 16, wherein the establishment of the blockchain ledger in the following manner includes:

Obtain the establishment rules of the blockchain ledger, where the establishment rules include a limit on the number of items per page;

Acquiring a piece of data to be written into the blockchain ledger, where the piece of data to be written into the blockchain ledger includes: keywords and values;

Obtaining the number of data pages currently written in the blockchain ledger and the number of data items written in the current page;

Determine whether the number of data items written on the current page has reached the limit on each page;

If it is determined that it is not reached, write the piece of data to be written into the blockchain ledger into the current page;

The page number of the current page and the number of data items written in the current page are recorded in the blockchain ledger.
The non-volatile computer-readable storage medium according to claim 17, wherein after determining whether the number of data items written in the current page reaches the limit number of items per page, the method further comprises:

When it is determined that the number of data items written on the current page has reached the limit number of items per page, the page number of the current page is increased by 1, as the next page;

Write the piece of data to be written into the blockchain ledger into the next page;

The page number of the next page and the number of data items written in the next page are recorded in the blockchain ledger.
The non-volatile computer-readable storage medium according to claim 18, wherein after writing the piece of data to be written into the blockchain ledger into the next page, the method further comprises:

Record the key of the piece of data to be written into the blockchain ledger, and associate the key of the piece of data to be written into the blockchain ledger with the page number of the next page.
The non-volatile computer-readable storage medium of claim 18, wherein recording the page number of the current page and the number of data items written in the current page in the blockchain ledger includes:

Part of the fields or space is divided in the blockchain ledger to record the page number of the current page and the number of data written in the current page.