WO2020187023A1 - 数据配置查询方法和装置 - Google Patents
数据配置查询方法和装置 Download PDFInfo
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- WO2020187023A1 WO2020187023A1 PCT/CN2020/077710 CN2020077710W WO2020187023A1 WO 2020187023 A1 WO2020187023 A1 WO 2020187023A1 CN 2020077710 W CN2020077710 W CN 2020077710W WO 2020187023 A1 WO2020187023 A1 WO 2020187023A1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/24—Querying
- G06F16/245—Query processing
- G06F16/2453—Query optimisation
- G06F16/24534—Query rewriting; Transformation
- G06F16/24542—Plan optimisation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3409—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment for performance assessment
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/28—Databases characterised by their database models, e.g. relational or object models
- G06F16/283—Multi-dimensional databases or data warehouses, e.g. MOLAP or ROLAP
Definitions
- This application relates to the technical field of data configuration query, and specifically, to a data configuration query method and device.
- OLAP Online Analytical Processing
- data models are the basis of OLAP analysis.
- the bottom layer of the OLAP analysis architecture is a data warehouse, which contains a series of data tables; modelers design data models based on these tables for analysts to use according to business analysis requirements; ultimately, the analysis operations of the analysts will be transformed into a series of data tables.
- SQL Structured Query Language, structured query language
- the data model gives the data table business meaning, decouples the relationship between the bottom layer of the data and the business requirements, how to effectively associate the query with the model, and maximize the use of OLAP analysis to serve the business is a very important part of it.
- the OLAP data model is the core element of the OLAP analysis engine based on processing data logic. It serves SQL business queries, so feature information is closely related to the content of SQL queries. Basic information includes fact tables, dimension tables, association methods, dimensions and measures And so on, sometimes a business query is associated with a specific model, but other times in relatively complex scenarios, because of the need to use cross-analysis of different business data, it is often necessary to use a combination of models to get the final analysis result.
- the process of SQL query related OLAP model is completed through the query execution engine.
- the main process includes: parsing SQL statements, generating SQL syntax tree, analyzing SQL syntax tree, converting it into query execution plan (query execution process), and confirming OLAP Model, generate physical execution plan, extract pre-calculated results, combine and analyze pre-calculated results, and output final results.
- the main purpose of this application is to provide a data configuration query method and device to solve the problems of a large number of OLAP models included in an OLAP query system and a low utilization rate of OLAP models in related technologies.
- this application provides a data configuration query method, which is applied to an online analytical processing OLAP query system, and the method includes:
- determining at least two target data sets that need to be queried by the query instruction and the orderly association between the target data sets includes:
- association information between the two target data sets is included in the equivalent association information, it is determined that the orderly association between the two target data sets is a two-way association.
- determining at least two target data sets that need to be queried by the query instruction and the orderly association between the target data sets further includes:
- association information between the two target data sets is not included in the equivalent association, it is determined that the orderly association between the two target data sets is a one-way association.
- output the OLAP model that conforms to the target association path in the database including:
- the OLAP model conforms to the target association path, the OLAP model is output.
- this application also provides a data configuration query device, which is applied to an OLAP query system, and includes:
- the determining module is used to determine at least two target data sets that are required to be queried by the query instruction and the orderly association between the target data sets, where the orderly association includes at least one-way association and/or two-way association;
- a generating module for generating a target association path based on the orderly association between the target data sets in at least two target data sets;
- the output module is used to output the OLAP model that conforms to the target association path in the database.
- association information between the two target data sets is included in the equivalent association information, it is determined that the orderly association between the two target data sets is a two-way association.
- association information between the two target data sets is not included in the equivalent association, it is determined that the orderly association between the two target data sets is a one-way association.
- an output module for:
- the OLAP model conforms to the target association path, the OLAP model is output.
- this application also provides a computer device, which includes:
- One or more processors are One or more processors;
- Memory used to store one or more computer programs
- one or more processors When one or more computer programs are executed by one or more processors, one or more processors are caused to implement the above-mentioned data configuration query method.
- the present application also provides a computer-readable storage medium that stores computer code.
- the computer code When the computer code is executed, the above-mentioned data configuration query method is executed.
- At least two target data sets and the orderly association between the target data sets that need to be queried by the query instruction are determined, where the orderly association includes at least one-way association and/or Two-way association; generate a target association path based on the orderly association between the target data sets in at least two target data sets; output an OLAP model that conforms to the target association path in the database.
- the two-way association between the target data sets can be confirmed, and the equivalent or similar OLAP model can be replaced by an OLAP data, which enlarges the scope of application of the OLAP data model, reduces the number of OLAP model requirements, and improves the OLAP model Utilization rate, reuse existing OLAP models to the greatest extent, avoid redundant models caused by the original support for similar analysis processes, and improve query execution efficiency; thereby solving the large number of OLAP model requirements included in the OLAP query system in related technologies and Technical problem of low utilization rate of OLAP model.
- FIG. 1 is a schematic flowchart of a data configuration query method provided by an embodiment of the present application
- Figure 2 is a directed graph of a target association path provided by an embodiment of the present application.
- FIG. 3 is a schematic flowchart of step 100 according to an embodiment of the present application.
- FIG. 4 is a schematic flowchart of another step 100 provided by an embodiment of the present application.
- FIG. 5 is a schematic flowchart of step 300 according to an embodiment of the present application.
- Fig. 6 is a schematic diagram of an OLAP model provided by an embodiment of the present application.
- FIG. 7 is a schematic structural diagram of a data configuration query device provided by an embodiment of the present application.
- FIG. 1 is a schematic flowchart of a data configuration query method provided by an embodiment of the present application, as shown in FIG. As shown in 1, the method includes the following steps 100 to 300:
- 100 Determine at least two target data sets that are required to be queried by the query instruction and an orderly association between the target data sets, where the orderly association includes at least one-way association and/or two-way association.
- the query instruction can be input by the user through the user terminal to query the business.
- the query instruction includes at least one sequence of instruction characters.
- the query instruction is a SQL query instruction for SQL services.
- the information of each target data set and the association information between the target data sets, and then the orderly association between the target data sets can be determined according to the association information, and the orderly association includes at least one-way association and/or two-way association.
- the query command is an SQL query command for SQL business.
- the query command contains information about the four target data sets A, B, C, and D and the association information between the target data sets. Between A and B The associated information is INNER JOIN, the associated information between A and D is LEFT JOIN, and the associated information between B and C is LEFT JOIN.
- the orderly association between A and D is a single A to D
- the orderly association between B and C is a one-way association from B to C
- the association information INNER JOIN between A and B is an equivalent association, namely "AINNER JOIN B" and "B INNER JOIN A”
- the orderly association between A and B is a two-way association between A and B.
- the OLAP model can be shown in Figure 6.
- the query command contains the information of four target data sets A, B, C, and D and the association information between the target data sets.
- the orderly association between A and D is a one-way association from A to D
- the orderly association between B and C is a one-way association from B to C
- the orderly association between A and B is a two-way association between A and B
- the directed graph representing the target association path is shown in Figure 2.
- the target association path can start from A or B, that is, the target association path includes two paths.
- the first path is: A to B and then to C, and A to D
- the second path is: B association To A and then to B, and B to C, therefore, there is an OLAP model that meets the first path or there is an OLAP model that meets the second path to achieve the query command requirements, which meets the first path
- the OLAP model and the OLAP model conforming to the second path are expressed in the same way, so only one OLAP model needs to be defined in the OLAP query system.
- the OLAP model conforming to the target association path is matched in the database, and the OLAP model is output.
- the equivalent or similar OLAP model can be replaced by an OLAP data, which enlarges the scope of application of the OLAP data model, reduces the number of OLAP model requirements, increases the utilization rate of OLAP models, and reuses existing OLAP models to the maximum. It avoids the redundant model originally caused by supporting the similar analysis process, and improves the execution efficiency of the query.
- FIG. 3 is a schematic flowchart of step 100 provided in an embodiment of the present application.
- step 100 determines at least two target data sets and targets that need to be queried by the query instruction.
- the orderly association between data sets includes the following steps 110 to 130:
- association information between the two target data sets is included in the equivalent association information, it is determined that the orderly association between the two target data sets is a two-way association.
- step 100 specifically includes identifying all target data sets (at least two target data sets) and associated information (associated characters, such as LEFT JOIN) between the target data sets based on the character sequence information of the query instruction, and then Determine whether the association information between two target data sets belongs to equivalent association information (equivalent association characters, such as INNER JOIN).
- equivalent association information equivalent association characters, such as INNER JOIN.
- FIG. 4 is a schematic flowchart of another step 100 provided in an embodiment of the present application.
- step 100 determines at least two target data sets that need to be queried by the query instruction and
- the orderly association between target data sets also includes the following step 140:
- association information between the two target data sets is not included in the equivalent association, determine that the orderly association between the two target data sets is a one-way association.
- equivalent associated information equivalent associated characters, for example, INNER JOIN belongs to equivalent associated characters
- equivalent association information for example, LEFT JOIN is not an equivalent association character
- the orderly association between the two target data sets is a one-way association. In this way, through steps 110 to 140, an orderly association between the target data sets can be determined.
- FIG. 5 is a schematic flow chart of a step 300 provided by an embodiment of the present application.
- step 300 outputting an OLAP model that conforms to the target association path in the database, includes the following steps 310 to Step 330:
- OLAP model that only contains all target data sets. For each OLAP model that only contains at least two target data sets that the query instruction needs to query, set Any target data set contained in the OLAP model is used as a candidate center to match the target association path to determine whether the OLAP model meets the target association path. When the OLAP model meets the target association path, the OLAP model is output for subsequent processing.
- At least two target data sets and the orderly association between the target data sets that need to be queried by the query instruction are determined, where the orderly association includes at least one-way association and/or Two-way association; generate a target association path based on the orderly association between the target data sets in at least two target data sets; output an OLAP model that conforms to the target association path in the database.
- the two-way association between the target data sets can be confirmed, and the equivalent or similar OLAP model can be replaced by an OLAP data, which enlarges the scope of application of the OLAP data model, reduces the number of OLAP model requirements, and improves the OLAP model Utilization rate, reuse existing OLAP models to the greatest extent, avoid redundant models caused by the original support for similar analysis processes, and improve query execution efficiency; thereby solving the large number of OLAP model requirements included in the OLAP query system in related technologies and Technical problem of low utilization rate of OLAP model.
- FIG. 7 is a schematic structural diagram of a data configuration query device provided in an embodiment of the application. As shown in FIG. 7, the device is used in an OLAP query system. , The device includes:
- the determining module 10 is configured to determine at least two target data sets that are required to be queried by the query instruction and an orderly association between the target data sets, where the orderly association includes at least one-way association and/or two-way association;
- the generating module 20 is configured to generate a target association path based on the orderly association between the target data sets in at least two target data sets;
- the output module 30 is used for outputting the OLAP model that conforms to the target association path in the database.
- the determining module 10 is used to:
- association information between the two target data sets is included in the equivalent association information, it is determined that the orderly association between the two target data sets is a two-way association.
- the determining module 10 is used to:
- association information between the two target data sets is not included in the equivalent association, it is determined that the orderly association between the two target data sets is a one-way association.
- the output module 30 is used for:
- the OLAP model conforms to the target association path, the OLAP model is output.
- the determining module 10 is used to determine at least two target data sets and the orderly associations between the target data sets that need to be queried by the query instruction, where the orderly association at least includes One-way association and/or two-way association; a generation module 20, for generating a target association path based on the orderly association between the target data sets in at least two target data sets; an output module 30, for outputting the target association path in the database OLAP model.
- the equivalent or similar OLAP model can be replaced by an OLAP data, which enlarges the scope of application of the OLAP data model, reduces the number of OLAP model requirements, and improves the utilization rate of the OLAP model .
- OLAP data which enlarges the scope of application of the OLAP data model, reduces the number of OLAP model requirements, and improves the utilization rate of the OLAP model .
- an embodiment of the present application also provides a computer device, which includes:
- One or more processors are One or more processors;
- Memory used to store one or more computer programs
- one or more processors When one or more computer programs are executed by one or more processors, one or more processors are caused to implement the aforementioned data configuration query method.
- the embodiments of the present application also provide a computer-readable storage medium that stores computer code.
- the computer code When the computer code is executed, the above-mentioned data configuration query method is executed.
- modules or steps of the present invention can be implemented by a general computing device. They can be concentrated on a single computing device or distributed in a network composed of multiple computing devices. Above, alternatively, 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, or they can be made into individual integrated circuit modules, or they can be Multiple modules or steps are made into a single integrated circuit module to achieve. In this way, the present invention is not limited to any specific combination of hardware and software.
- the computer program involved in this application can be stored in a computer-readable storage medium, and the computer-readable storage medium can include: any physical device, virtual device, USB, mobile hard disk, magnetic disk, optical disk, Computer memory, read-only computer memory (Read-Only Memory, ROM), random access computer memory (Random Access Memory, RAM), electrical carrier signal, telecommunications signal, and other software distribution media, etc.
- modules or steps of the present invention can be implemented by a general computing device. They can be concentrated on a single computing device or distributed in a network composed of multiple computing devices. Above, alternatively, 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, or they can be made into individual integrated circuit modules, or they can be Multiple modules or steps are made into a single integrated circuit module to achieve. In this way, the present invention is not limited to any specific combination of hardware and software.
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Claims (10)
- 一种数据配置查询方法,其特征在于,所述方法应用于联机分析处理OLAP查询系统中,所述方法包括:确定出查询指令所需要查询的至少两个目标数据集以及所述目标数据集之间的有序关联,其中,所述有序关联至少包括单向关联和/或双向关联;基于所述至少两个目标数据集中目标数据集之间的有序关联生成目标关联路径;在数据库中输出符合所述目标关联路径的OLAP模型。
- 根据权利要求1所述的数据配置查询方法,其特征在于,所述确定出查询指令所需要查询的至少两个目标数据集以及所述目标数据集之间的有序关联,包括:基于所述查询指令的字符序列信息,识别出所述至少两个目标数据集以及所述目标数据集之间的关联信息;判断两个所述目标数据集之间的所述关联信息是否包含于等价关联信息中;当两个所述目标数据集之间的所述关联信息包含于等价关联信息中时,确定该两个所述目标数据集之间的有序关联为双向关联。
- 根据权利要求2所述的数据配置查询方法,其特征在于,所述确定出查询指令所需要查询的至少两个目标数据集以及所述目标数据集之间的有序关联,还包括:当两个所述目标数据集之间的所述关联信息不包含于等价关联中时,确定该两个所述目标数据集之间的有序关联为单向关联。
- 根据权利要求1所述的数据配置查询方法,其特征在于,所述在数据库中输出符合所述目标关联路径的OLAP模型,包括:在所述数据库中筛选出仅包含有所述查询指令所需要查询的至少两个目标数据集的所述OLAP模型;将所述OLAP模型中包含的任意一个所述目标数据集作为候选中心与所述目标关联路径进行匹配,确定所述OLAP模型是否符合所述目标关联路径;当所述OLAP模型符合所述目标关联路径时,输出该所述OLAP模型。
- 一种数据配置查询装置,其特征在于,所述装置应用于OLAP查询系统中,所述装置包括:确定模块,用于确定出查询指令所需要查询的至少两个目标数据集以及所述目标数据集之间的有序关联,其中,所述有序关联至少包括单向关联和/或双向关联;生成模块,用于基于所述至少两个目标数据集中目标数据集之间的有序关联生成目标关联路径;输出模块,用于在数据库中输出符合所述目标关联路径的OLAP模型。
- 根据权利要求5所述的数据配置查询装置,其特征在于,所述确定模块,用于:基于所述查询指令的字符序列信息,识别出所述至少两个目标数据集以及所述目标数据集之间的关联信息;判断两个所述目标数据集之间的所述关联信息是否包含于等价关联信息中;当两个所述目标数据集之间的所述关联信息包含于等价关联信息中时,确定该两个所述目标数据集之间的有序关联为双向关联。
- 根据权利要求6所述的数据配置查询装置,其特征在于,所述确定模块,用于:当两个所述目标数据集之间的所述关联信息不包含于等价关联中时,确定该两个所述目标数据集之间的有序关联为单向关联。
- 根据权利要求5所述的数据配置查询装置,其特征在于,所述输出模块,用于:在所述数据库中筛选出仅包含有所述查询指令所需要查询的至少两个目标数据集的所述OLAP模型;将所述OLAP模型中包含的任意一个所述目标数据集作为候选中心与所述目标关联路径进行匹配,确定所述OLAP模型是否符合所述目标关联路径;当所述OLAP模型符合所述目标关联路径时,输出该所述OLAP模型。
- 一种计算机设备,所述计算机设备包括:一个或多个处理器;存储器,用于存储一个或多个计算机程序;当一个或多个计算机程序被一个或多个处理器执行时,使得一个或多个处理器实现如权利要求1-4任一项所述的数据配置查询方法。
- 一种计算机可读存储介质,所述计算机可读存储介质存储有计算机代码,当所述计算机代码被执行时,如权利要求1-4任一项所述的数据配置查询方法被执行。
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