CN117827840A - Index creation method and device, electronic equipment and storage medium - Google Patents
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Abstract
The invention discloses an index creation method, an index creation device, electronic equipment and a storage medium. The method comprises the following steps: when the query time length based on the target query statement is greater than a preset time length threshold, determining the table structure information of the query corresponding to the target query statement; determining a query condition field corresponding to the target query statement; and when the query condition field in the target table corresponding to the table structure information is not indexed, creating an index for the query condition field in the target table. According to the technical scheme provided by the embodiment of the invention, in the process of inquiring based on the target inquiry statement, the index can be dynamically created for the inquiry condition field corresponding to the target inquiry statement with low inquiry speed, so that the inquiry efficiency is improved.
Description
Technical Field
The present invention relates to the field of computer technologies, and in particular, to an index creating method, an index creating device, an electronic device, and a storage medium.
Background
It is becoming increasingly common today to query information based on structured query language (Structured Query Language, SQL) query statements. However, in the process of querying based on the SQL query statement, there is often a case that the query speed is slow, which will seriously affect the user experience. The reason for the slow query speed based on the SQL query statement is that there are too many table connections in the query database, or the SQL query statement contains too many query conditions, or the accumulated data amount of table data in the database is too large as the production environment of the database is on line for too long. In the related art, a developer or an operator is usually required to manually find an SQL query statement with low query speed through a visualization tool, and perform optimization processing on the SQL query statement, so that the efficiency is low, and the problem of low query speed is not necessarily solved.
Disclosure of Invention
The invention provides an index creation method, an index creation device, electronic equipment and a storage medium, which can dynamically create an index for a query condition field corresponding to a target query statement with low query speed in the process of querying based on the target query statement, thereby being beneficial to improving query efficiency.
According to an aspect of the present invention, there is provided an index creation method including:
when the query time length based on the target query statement is greater than a preset time length threshold, determining the table structure information of the query corresponding to the target query statement;
determining a query condition field corresponding to the target query statement;
and when the query condition field in the target table corresponding to the table structure information is not indexed, creating an index for the query condition field in the target table.
According to another aspect of the present invention, there is provided an index creating apparatus including:
the table structure information determining module is used for determining the table structure information of the query corresponding to the target query statement when the query time length based on the target query statement is longer than a preset time length threshold;
the query condition field determining module is used for determining a query condition field corresponding to the target query statement;
and the index creation module is used for creating an index for the query condition field in the target table when the query condition field in the target table corresponding to the table structure information does not create the index.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the index creating method according to any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to implement the index creating method according to any one of the embodiments of the present invention when executed.
According to the index creation scheme provided by the embodiment of the invention, when the query time length based on the target query statement is longer than the preset time length threshold, the table structure information of the query corresponding to the target query statement is determined; determining a query condition field corresponding to the target query statement; and when the query condition field in the target table corresponding to the table structure information is not indexed, creating an index for the query condition field in the target table. According to the technical scheme provided by the embodiment of the invention, in the process of inquiring based on the target inquiry statement, the index can be dynamically created for the inquiry condition field corresponding to the target inquiry statement with low inquiry speed, so that the inquiry efficiency is improved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of an index creation method according to a first embodiment of the present invention;
FIG. 2 is a flow chart of an index creation method according to a second embodiment of the present invention;
fig. 3 is a schematic structural view of an index creating apparatus according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device implementing an index creation method according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of an index creating method according to an embodiment of the present invention, where the method may be performed by an index creating device, and the index creating device may be implemented in hardware and/or software, and the index creating device may be configured in an electronic device. As shown in fig. 1, the method includes:
s110, when the query time length based on the target query statement is greater than a preset time length threshold, determining the table structure information of the query corresponding to the target query statement.
In the embodiment of the invention, the target query statement input by the user is obtained, wherein the target query statement can be a structured query language SQL statement. Inquiring in the corresponding database table based on the target inquiry statement, and monitoring the inquiry time length of acquiring the inquiry result based on the target inquiry statement in real time. Judging whether the query time length based on the target query statement is greater than a preset time length threshold value, if so, determining the table structure information of the query corresponding to the target query statement. The method includes the steps of analyzing a target query statement, and determining table structure information of a database table corresponding to the query of the target query statement according to an analysis result, wherein the table structure information can comprise a table name, a table field and a table type, and the table type can comprise a single table and multiple tables.
S120, determining a query condition field corresponding to the target query statement.
In the embodiment of the invention, the target query statement is analyzed, and the query condition field corresponding to the target query statement is determined. For example, when the attendance condition of a user in the attendance library table is queried based on the target query statement, the query condition field corresponding to the target query statement may be the user name or the user work number.
S130, when the query condition field in the target table corresponding to the table structure information does not create an index, creating an index for the query condition field in the target table.
In the embodiment of the invention, whether the query condition field in the target table corresponding to the table structure information is created is judged, if not, the index is created for the query condition field in the target table. It can be understood that the target table is a database table corresponding to the query based on the target query statement, and the query condition fields contained in the target table are not created with indexes, so that in order to improve the query efficiency, indexes are created for the query condition fields in the target table.
Optionally, when the query condition field in the target table corresponding to the table structure information does not create an index, creating an index for the query condition field in the target table includes: when the query condition field in the target table corresponding to the table structure information does not create an index, determining the query condition type corresponding to the query condition field; and when the query condition type is not the preset query condition type, creating an index for the query condition field in the target table. The advantage of this arrangement is that the validity of the index creation can be effectively ensured.
In the embodiment of the invention, when indexes are created for the query condition fields of certain query condition types, the indexes are also invalid, so that when the indexes are not created for the query condition fields in the target table corresponding to the table structure information, the query condition types corresponding to the query condition fields are determined, and whether the indexes are needed to be created for the query condition fields in the target table is judged according to the query condition types. Specifically, whether the query condition type is an invalid index type is judged, namely whether the query condition type is a preset query condition type is judged, if not, an index is created for the query condition field in the target table. The preset query condition types comprise any one of front-back fuzzy query, left fuzzy query, function query, query condition field created index, query operated by NOT IN and < >, query calculated by using an expression, field column of the query NOT containing null value and field of the query NOT being implicitly converted. It can be appreciated that when the query condition type corresponding to the query condition field IN the target table is any one of a front-back fuzzy query, a left fuzzy query, a function query, a query IN which the query condition field has created an index, a query operated using NOT IN and < >, a query calculated using an expression, a field column of the query NOT containing a null value, and a field of the query NOT implicitly converting the type, it is explained that even if the index is created IN the target table for the query condition field, the index is an invalid index, that is, the query efficiency based on SQL statements IN the target table is NOT improved.
According to the index creation method, when the query time length based on the target query statement is longer than the preset time length threshold, table structure information of the query corresponding to the target query statement is determined; determining a query condition field corresponding to the target query statement; and when the query condition field in the target table corresponding to the table structure information is not indexed, creating an index for the query condition field in the target table. According to the technical scheme provided by the embodiment of the invention, in the process of inquiring based on the target inquiry statement, the index can be dynamically created for the inquiry condition field corresponding to the target inquiry statement with low inquiry speed, so that the inquiry efficiency is improved.
In some embodiments, when the query condition field in the target table corresponding to the table structure information does not create an index, before creating an index for the query condition field in the target table, the method further includes: determining target database information corresponding to the query of the target query statement; determining the database type of the corresponding query of the target query statement according to the target database information; when the index is not created for the query condition field in the target table corresponding to the table structure information, creating the index for the query condition field in the target table includes: and when the query condition field in the target table corresponding to the table structure information is not created with an index, creating an index for the query condition field in the target table according to the database type.
In the embodiment of the invention, the target query statement is analyzed, and the target database information of the query corresponding to the target query statement is determined, wherein the target database information is the related information of the database of the query corresponding to the target query statement. The target database information may include a database address, a database name, login account information for the database, a database driver, and a link URL. And determining the database type of the database corresponding to the query of the target query statement according to the target database information. The database types can include Oracle database, mysql database, sqlServer database, and the like. The database types are different, and the dialects (writing languages) adopted by the database tables contained in the database are different, so when the index is not created for the query condition field in the target table corresponding to the table structure information, the index is created for the query condition field in the target table according to the dialects corresponding to the database types.
In some embodiments, in creating an index for the query condition field in the target table, further comprising: and generating an operation log of the target table, and storing the operation log. Illustratively, when an index is created for the query condition field in the target table, an operation log for the target table is generated in real time, and the operation log is stored, so that the advantage of this arrangement is that an operator can trace back the operation record for the target table according to the need.
Example two
Fig. 2 is a flowchart of an index creating method according to a second embodiment of the present invention, as shown in fig. 2, where the method includes:
s210, when the query time length based on the target query statement is greater than a preset time length threshold, determining the table structure information of the query corresponding to the target query statement.
S220, determining a query condition field corresponding to the target query statement.
S230, determining target database information corresponding to the query of the target query statement.
S240, determining the database type of the query corresponding to the target query statement according to the target database information.
S250, when the query condition field in the target table corresponding to the table structure information does not create an index, determining the type of the query condition corresponding to the query condition field.
S260, when the query condition type is not the preset query condition type, creating an index for the query condition field in the target table according to the database type.
According to the index creation method provided by the embodiment of the invention, in the process of inquiring based on the target inquiry statement, the index can be dynamically created for the inquiry condition field corresponding to the target inquiry statement with low inquiry speed, so that the inquiry efficiency is improved.
Example III
Fig. 3 is a schematic structural diagram of an index creating device according to a third embodiment of the present invention. As shown in fig. 3, the apparatus includes:
a table structure information determining module 310, configured to determine table structure information of a query corresponding to a target query statement when a query time period based on the target query statement is longer than a preset time period threshold;
a query condition field determining module 320, configured to determine a query condition field corresponding to the target query statement;
and an index creation module 330, configured to create an index for the query condition field in the target table corresponding to the table structure information when the query condition field does not create an index.
Optionally, the index creating module is configured to:
when the query condition field in the target table corresponding to the table structure information does not create an index, determining the query condition type corresponding to the query condition field;
and when the query condition type is not the preset query condition type, creating an index for the query condition field in the target table.
Optionally, the preset query condition type includes any one of front-back fuzzy query, left fuzzy query, function query, query condition field having created index, query operated by NOT IN and < >, query calculated by expression, field column of query NOT containing null value and field of query NOT being implicitly type converted.
Optionally, the apparatus further includes:
a target database information determining module, configured to determine target database information corresponding to a query of the target query statement before an index is created for the query condition field in the target table when the index is not created for the query condition field in the target table corresponding to the table structure information;
the database type determining module is used for determining the database type of the query corresponding to the target query statement according to the target database information;
the index creation module is configured to:
and when the query condition field in the target table corresponding to the table structure information is not created with an index, creating an index for the query condition field in the target table according to the database type.
Optionally, the target database information includes a database address, a database name, login account information of a database, a database driver, and a link URL.
Optionally, the apparatus further includes:
and the operation log generating module is used for generating an operation log of the target table in the process of creating the index for the query condition field in the target table and storing the operation log.
Optionally, the target query statement comprises a structured query language SQL statement.
The index creating device provided by the embodiment of the invention can execute the index creating method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the executing method.
Example IV
Fig. 4 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 4, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the respective methods and processes described above, such as an index creation method.
In some embodiments, the index creation method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the index creation method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the index creation method in any other suitable way (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. An index creation method, comprising:
when the query time length based on the target query statement is greater than a preset time length threshold, determining the table structure information of the query corresponding to the target query statement;
determining a query condition field corresponding to the target query statement;
and when the query condition field in the target table corresponding to the table structure information is not indexed, creating an index for the query condition field in the target table.
2. The method of claim 1, wherein creating an index for the query condition field in the target table corresponding to the table structure information when the index is not created for the query condition field in the target table comprises:
when the query condition field in the target table corresponding to the table structure information does not create an index, determining the query condition type corresponding to the query condition field;
and when the query condition type is not the preset query condition type, creating an index for the query condition field in the target table.
3. The method of claim 2, wherein the predetermined query condition types include any of front-to-back fuzzy queries, left fuzzy queries, function queries, queries IN which the query condition fields have created indexes, queries operated using NOT IN and < >, queries calculated using expressions, queries IN which the field columns do NOT contain null values, and queries IN which the fields do NOT implicitly type-convert.
4. The method of claim 1, further comprising, before creating an index for the query condition field in the target table when the index is not created for the query condition field in the target table corresponding to the table structure information:
determining target database information corresponding to the query of the target query statement;
determining the database type of the corresponding query of the target query statement according to the target database information;
when the index is not created for the query condition field in the target table corresponding to the table structure information, creating the index for the query condition field in the target table includes:
and when the query condition field in the target table corresponding to the table structure information is not created with an index, creating an index for the query condition field in the target table according to the database type.
5. The method of claim 4, wherein the target database information comprises a database address, a database name, login account information for a database, a database driver, and a link URL.
6. The method of claim 1, wherein in creating an index for the query condition field in the target table, further comprising:
and generating an operation log of the target table, and storing the operation log.
7. The method of any of claims 1-6, wherein the target query statement comprises a structured query language, SQL, statement.
8. An index creation apparatus, comprising:
the table structure information determining module is used for determining the table structure information of the query corresponding to the target query statement when the query time length based on the target query statement is longer than a preset time length threshold;
the query condition field determining module is used for determining a query condition field corresponding to the target query statement;
and the index creation module is used for creating an index for the query condition field in the target table when the query condition field in the target table corresponding to the table structure information does not create the index.
9. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the index creating method of any one of claims 1-7.
10. A computer readable storage medium storing computer instructions for causing a processor to implement the index creation method of any of claims 1-7 when executed.
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