CN112182014A - Database query method, device, equipment and storage medium - Google Patents
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Abstract
The invention provides a database query method, a database query device and a storage medium, and relates to the technical field of computers, wherein the method comprises the following steps: receiving a target query request sent by user equipment, wherein the target query request comprises a target identifier of a target query result to be queried; determining a target preset query statement corresponding to the target identifier based on a relation table of the predetermined identifier and a structured query language preset query statement; querying in the database based on the target preset query statement to obtain a target query result; and sending a query response to the user equipment, wherein the query response comprises the target query result. The query result obtained in the database based on the preset query statement can be realized through the identification mark. Therefore, the method is convenient for users to use, saves the learning cost of preset query sentences, and also ensures the safety of the data in the database.
Description
Technical Field
The present invention relates to the field of computer technologies, and in particular, to a database query method, apparatus, device, and storage medium.
Background
Structured Query Language (SQL), a special purpose programming Language, is a database Query and programming Language for accessing data and querying, updating, and managing relational database systems.
Structured query languages are high-level, non-procedural programming languages that allow users to work on high-level data structures. The method does not require a user to specify a data storage method and does not require the user to know a specific data storage mode, so that different database systems with completely different underlying structures can use the same structured query language as an interface for data input and management. The structured query language statements can be nested, which allows for great flexibility and powerful functionality.
Currently in the data age, data is a value. For many companies, data is generally stored by using a database, and data is queried from the database by using SQL statements, so how to ensure safe and efficient use of the data is a problem to be solved at present.
Disclosure of Invention
The invention aims to provide a database query method, a database query device and a database query storage medium, so as to solve the technical problem that preset query sentences are high in learning cost and not beneficial to users.
In a first aspect, an embodiment provides a database query method, including:
receiving a target query request sent by user equipment, wherein the target query request comprises a target identifier of a target query result to be queried;
determining a target preset query statement corresponding to the target identifier based on a relation table of the predetermined identifier and a structured query language preset query statement;
querying in the database based on the target preset query statement to obtain a target query result;
and sending a query response to the user equipment, wherein the query response comprises the target query result.
In an optional embodiment, the query request further includes a target parameter, and the target preset query statement includes a reserved parameter; before the step of querying in the database based on the target preset query statement to obtain a target query result, the method further includes:
and replacing the reserved parameters in the target preset query statement with the target parameters.
In an alternative embodiment, the query request includes a reserved field (parameter), and the value of the reserved field is the target parameter.
In an alternative embodiment, the query request includes a request header, the request header including the target parameter.
In an optional embodiment, before the step of determining, based on a relationship table between a predetermined identifier and a preset query statement of a structured query language, a target preset query statement corresponding to the target identifier, the method further includes:
determining whether the current request times counted in the current period exceed a threshold value;
if yes, rejecting the target query request;
if not, executing a step of determining a target preset query statement corresponding to the target identifier based on a relation table of the predetermined identifier and a preset query statement of a structured query language.
In an optional embodiment, the current period includes a plurality of current periods, and the plurality of current periods respectively correspond to different thresholds, where the threshold is a maximum number of allowed requests within a period.
In an optional embodiment, the target identifier is a hypertext transfer protocol address, and the preset query statement is a preset structured query language-based statement.
In a second aspect, an embodiment provides a database query apparatus, including:
the system comprises a receiving module, a query module and a query module, wherein the receiving module is used for receiving a target query request sent by user equipment, and the target query request comprises a target identifier of a target query result to be queried;
the determining module is used for determining a target preset query statement corresponding to the target identifier based on a relation table of the predetermined identifier and a preset query statement of a structured query language;
the query module is used for querying in the database based on the target preset query statement to obtain a target query result;
and the sending module is used for sending a query response to the user equipment, wherein the query response comprises the target query result.
In a third aspect, an embodiment provides a computer device, including a memory and a processor, where the memory stores a computer program operable on the processor, and the processor implements the steps of the method of any one of the foregoing embodiments when executing the computer program.
In a fourth aspect, embodiments provide a computer readable storage medium having stored thereon machine executable instructions which, when invoked and executed by a processor, cause the processor to execute the method of any of the preceding embodiments.
The invention provides a database query method, a database query device, database query equipment and a storage medium. Receiving a target query request sent by user equipment, wherein the target query request comprises a target identifier of a target query result; determining a target preset query statement corresponding to the target identifier based on a relation table of the predetermined identifier and a structured query language preset query statement; querying in the database based on the target preset query statement to obtain a target query result; and sending a query response to the user equipment, wherein the query response comprises the target query result. The query result obtained in the database based on the preset query statement can be realized through the identification mark. Therefore, the method is convenient for users to use, saves the learning cost of preset query sentences, and also ensures the safety of the data in the database.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic flowchart of a database query method according to an embodiment of the present disclosure;
fig. 2 is an example of a database query method provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a database query device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a computer device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Fig. 1 is a schematic flow chart of a database query method according to an embodiment of the present invention. As shown in fig. 1, the method may include the steps of:
s110, receiving a target query request sent by user equipment. The target query request comprises a target identification of a target query result to be queried;
the target query request is used for requesting a target query result to be queried. For example, the query request may be a HyperText Transfer Protocol (HTTP) request.
As an example, a preset query statement of the database may be developed into an open application programming interface (OpenAPI) and provided to a user, and the user may query the data in the database by calling the OpenAPI. The OpenAPI is an identifier for a user. As one example, the target identifier may be a target Uniform Resource Locator (URL), which may include a web server address, which may be determined based on OpenAPI, and an arbitrary string, through which the database may be accessed.
For example, the administrator may register a preset query statement as an OpenAPI, i.e., generate a random and non-repeating identifier, in the web server. The identification may be open to the user equipment.
S120, determining a target preset query statement corresponding to the target identifier based on a relation table of the predetermined identifier and the preset query statement;
the corresponding relationship between the identifier and the preset query statement may be predetermined and stored in a relationship table in the web server, where the preset query statement may be an SQL statement. As one example, after the administrator has completed the registration in the web server, a local relational table may be built based on the generated URLs and the original SQL statements. For example, the SQL statement is "select from user", the "URL" of the registered OpenAPI is http:// web service address/hsu 173hew (which may be an arbitrary character string), the corresponding relationship is stored in the relationship table, and the table structure of the relationship table may be as shown in the following table 1:
TABLE 1
When registering, the administrator can register a plurality of SQL statements of one data in batch, and the obtained URLs are also a plurality. The relational table may be updated when the SQL statements of the database are updated. If the SQL statement is newly added, the newly added SQL statement can be registered.
S130, inquiring in a database based on a target preset inquiry statement to obtain a target inquiry result;
since the preset query statement is predefined, the query can be implemented by executing the preset query statement. For example, after the web server determines the target SQL statement, the target SQL statement may be executed, so that the query on the database may be implemented to obtain the target query result.
And S140, sending a query response to the user equipment, wherein the query response comprises a target query result.
For example, when a user invokes an OpenAPI (e.g., an HTTP Request may be sent to implement the call, the simplest way of invoking is to directly input the URL into the browser, or in an encoded way), the web service receives the Request and may obtain the URL from the Request. The web service acquires the corresponding SQL statement from the table according to the URL, executes the SQL statement and returns the execution result (namely, returns an HTTP Response carrying the target query result).
For another example, the user inputs "http:// web service address/hsu 173 hew" in the browser, and after the input is successful, the page displayed by the browser is the content returned by the web service (i.e. the SQL statement query result corresponding to the URL).
The invention provides a database query method and a database query device. Receiving a target query request sent by user equipment, wherein the target query request comprises a target identifier; determining a target preset query statement corresponding to the target identifier based on a relation table of the predetermined identifier and the preset query statement; querying in the database based on the target preset query statement to obtain a target query result; and sending a query response to the user equipment, wherein the query response comprises the target query result. The query result obtained in the database based on the preset query statement can be realized through the identification mark. Therefore, the method is convenient for users to use, saves the learning cost of preset query sentences, and also ensures the safety of the data in the database.
In some embodiments, the query request further includes a target parameter, and the target preset query statement includes a reservation parameter; before step S130, the method may further include the steps of:
step A: and replacing the reserved parameters in the target preset query statement with target parameters.
Therefore, one preset query statement can refer to one category, so that the number of the preset query statements can be greatly reduced.
As one example, the query request includes a reserved field, the value of which is the target parameter. The reserved field may be a param field.
As another example, the query request includes a request header, which may include target parameters.
For example, when registering a preset query statement as an OpenAPI, an administrator may reserve a parameter in the preset query statement, where a value of the parameter is input when a user calls the OpenAPI. For example, the URL corresponding to the SQL statement is http:// web service address/kkfdhwe 1 m. The SQL statement is "select from user where user name $ { user name }", where $ { … } represents a reservation parameter. Specifically, as shown in table 2:
TABLE 2
When calling the OpenAPI, a user needs to add parameters, the HTTP Request includes information such as params (parameters) and headers (Request headers) in addition to the URL, and the user can place the parameters to be input in the params or headers.
For example, when placed in params, the user calls http:// web service address/kkfdhwe 1muser _ name ═ zhangsan.
The web service can obtain information such as URLs, arams, headers and the like from the HTTP Request, obtain a corresponding SQL statement according to the URL, replace a reserved parameter in the SQL statement with a parameter input by a user, obtain that the SQL statement is 'select' from user where user _ name 'zhangsan', execute the SQL statement by the web service, and return an execution result.
The scheme needs a web service, SQL (structured query language) statements are developed into OpenAPIs through the web service, and the OpenAPIs corresponding to the SQL statements are unique and different from each other. And providing the query capability of the database to a user in the form of OpenAPI. The OpenAPI service queries the database once every time a user requests it, which is forwarded to the web service via the network, and returns the results to the user.
By the method, the user can conveniently obtain the result without directly connecting the database.
Further, in some embodiments, flow control may be performed by the web service, i.e., limiting the number of accesses over a certain period of time. When the limit number is exceeded, then the web service may reject the request, in this way, the access pressure to the database may be controlled. As an example, before step S120, the method may further include the steps of:
step 1), determining whether the current request times counted in the current period exceed a threshold value;
step 2), if yes, rejecting the target query request;
and 3), if not, executing a step of determining a target preset query statement corresponding to the target identifier based on a relation table of the predetermined identifier and the structured query language preset query statement.
The current cycle may include one or more current cycles, and when the current cycle includes a plurality of current cycles, the current cycles may respectively correspond to a plurality of different time periods, and each time period may correspond to a threshold, where the threshold may be a maximum number of allowed requests in the cycle. For example, the cycle may be every second or every minute, and the time period may be morning, afternoon or evening, and may also be year, month, day, etc., that is, a time period consisting of consecutive cycles.
As an example, as shown in fig. 2, the method may specifically include the following steps:
step a), user equipment sends a request for calling OpenAPI to a web server;
step b), the web server determines a preset query statement corresponding to the OpenAPI based on a predetermined corresponding table;
step c), inquiring the database based on the preset inquiry statement;
step d), the database returns the query result;
and e), the web server sends the query result to the user equipment.
Fig. 3 is a schematic structural diagram of a database query device according to an embodiment of the present invention. As shown in fig. 3, the apparatus includes:
a receiving module 301, configured to receive a target hypertext transfer protocol query request sent by a user equipment, where the target query request includes a target identifier of a target query result to be queried;
a determining module 302, configured to determine a target preset query statement corresponding to a target identifier based on a relationship table between the predetermined identifier and a preset query statement in a structured query language;
the query module 303 is configured to query the database based on the target preset query statement to obtain a target query result;
a sending module 304, configured to send a query response to the user equipment, where the query response includes the target query result.
In some embodiments, the query request further comprises a target parameter, and the target preset query statement comprises a reservation parameter; the device also includes:
and the replacing module is used for replacing the reserved parameters in the target preset query statement with the target parameters.
In some embodiments, the query request includes a reserved field, the value of which is the target parameter.
In some embodiments, the query request includes a request header that includes the target parameter.
In some embodiments, the apparatus further comprises a flow control module to:
determining whether the current request times counted in the current period exceed a threshold value;
if yes, rejecting the target query request;
if not, executing a step of determining a target preset query statement corresponding to the target identifier based on a relation table of the predetermined identifier and the structured query language preset query statement.
The database query device provided by the embodiment of the application has the same technical characteristics as the database query method provided by the embodiment, so that the same technical problems can be solved, and the same technical effects can be achieved.
As shown in fig. 4, an embodiment of the present application provides a computer device 700, including: a processor 701, a memory 702 and a bus, wherein the memory 702 stores machine-readable instructions executable by the processor 701, when the electronic device runs, the processor 701 communicates with the memory 702 through the bus, and the processor 701 executes the machine-readable instructions to execute the steps of the database query method.
Specifically, the memory 702 and the processor 701 can be general-purpose memory and processor, which are not limited in particular, and the database query method can be executed when the processor 701 executes a computer program stored in the memory 702.
Corresponding to the database query method, an embodiment of the present application further provides a computer-readable storage medium, where machine executable instructions are stored, and when the computer executable instructions are called and executed by a processor, the computer executable instructions cause the processor to execute the steps of the database query method.
The database query device provided by the embodiment of the present application may be specific hardware on the device, or software or firmware installed on the device, and the like. The device provided by the embodiment of the present application has the same implementation principle and technical effect as the foregoing method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the foregoing method embodiments where no part of the device embodiments is mentioned. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the foregoing systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional units in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the mobile control method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the scope of the embodiments of the present application. Are intended to be covered by the scope of the present application.
Claims (10)
1. A database query method, comprising:
receiving a target query request sent by user equipment, wherein the target query request comprises a target identifier of a target query result to be queried;
determining a target preset query statement corresponding to the target identifier based on a relation table of the predetermined identifier and the preset query statement;
querying in the database based on the target preset query statement to obtain the target query result;
and sending a query response to the user equipment, wherein the query response comprises the target query result.
2. The method of claim 1, wherein the target query request further comprises a target parameter, and wherein the target preset query statement comprises a reservation parameter; before the step of querying in the database based on the target preset query statement to obtain a target query result, the method further includes:
and replacing the reserved parameters in the target preset query statement with the target parameters.
3. The method of claim 2, wherein the query request comprises a reserved field, and wherein the value of the reserved field is the target parameter.
4. The method of claim 2, wherein the query request comprises a request header, and wherein the request header comprises the target parameter.
5. The method according to claim 1, wherein before the step of determining the target preset query statement corresponding to the target identifier based on a relation table between the predetermined identifier and the structured query language preset query statement, the method further comprises:
determining whether the current request times counted in the current period exceed a threshold value;
if yes, rejecting the target query request;
if not, executing a step of determining a target preset query statement corresponding to the target identifier based on a relation table of the predetermined identifier and a preset query statement of a structured query language.
6. The method according to claim 5, wherein the current period includes a plurality of current periods, and the plurality of current periods correspond to different thresholds, respectively, wherein the threshold is a maximum number of requests allowed in a period.
7. The method of claim 1, wherein the target identifier is a hypertext transfer protocol address, and the preset query statement is a preset structured query language-based statement.
8. A database query device, comprising:
the system comprises a receiving module, a query module and a query module, wherein the receiving module is used for receiving a target query request sent by user equipment, and the target query request comprises a target identifier of a target query result to be queried;
the determining module is used for determining a target preset query statement corresponding to the target identifier based on a relation table of the predetermined identifier and a preset query statement of a structured query language;
the query module is used for querying in the database based on the target preset query statement to obtain the target query result;
and the sending module is used for sending a query response to the user equipment, wherein the query response comprises the target query result.
9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the method of any one of claims 1 to 7 when executing the computer program.
10. A computer readable storage medium having stored thereon machine executable instructions which, when invoked and executed by a processor, cause the processor to execute the method of any of claims 1 to 7.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112988781A (en) * | 2021-02-02 | 2021-06-18 | 北京金山云网络技术有限公司 | Data query method and device, electronic equipment and computer readable storage medium |
| CN113239009A (en) * | 2021-04-08 | 2021-08-10 | 大唐软件技术股份有限公司 | Database operation method, device, equipment and storage medium |
| CN113360503A (en) * | 2021-06-18 | 2021-09-07 | 建信金融科技有限责任公司 | Test data tracking method and device for distributed database |
| CN114238404A (en) * | 2021-12-15 | 2022-03-25 | 建信金融科技有限责任公司 | Data query method and device, storage medium and equipment |
| CN114510501A (en) * | 2021-12-28 | 2022-05-17 | 奇安信科技集团股份有限公司 | Method and device for processing interface data in real time |
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| CN108959631A (en) * | 2018-07-24 | 2018-12-07 | 北京百度网讯科技有限公司 | Method and apparatus for query information |
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| CN108959631A (en) * | 2018-07-24 | 2018-12-07 | 北京百度网讯科技有限公司 | Method and apparatus for query information |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112988781A (en) * | 2021-02-02 | 2021-06-18 | 北京金山云网络技术有限公司 | Data query method and device, electronic equipment and computer readable storage medium |
| CN113239009A (en) * | 2021-04-08 | 2021-08-10 | 大唐软件技术股份有限公司 | Database operation method, device, equipment and storage medium |
| CN113360503A (en) * | 2021-06-18 | 2021-09-07 | 建信金融科技有限责任公司 | Test data tracking method and device for distributed database |
| CN113360503B (en) * | 2021-06-18 | 2023-02-07 | 建信金融科技有限责任公司 | Test data tracking method and device for distributed database |
| CN114238404A (en) * | 2021-12-15 | 2022-03-25 | 建信金融科技有限责任公司 | Data query method and device, storage medium and equipment |
| CN114510501A (en) * | 2021-12-28 | 2022-05-17 | 奇安信科技集团股份有限公司 | Method and device for processing interface data in real time |
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