公开(公告)号：US20210182299A1

公开(公告)日：2021-06-17

申请号：US16711141

申请日：2019-12-11

Applicant: SAP SE

Inventor： Michael Ludwig ,  Johannes Merx ,  Christoph Weyerhaeuser ,  Julian Schwing

IPC: G06F16/2457 ,  G06F16/21 ,  G06F16/27

Abstract: A calculation engine of a database management system is described. The calculation engine may receive a query associated with a calculation scenario that defines a data flow model. The data flow model may include one or more calculation nodes, each of which corresponding to an operation performed on one or more database tables stored at a database. The one or more calculation nodes may include at least one calculation node corresponding to a ranking filter operation. The calculation engine may execute the query including by executing the calculation scenario. The executing of the calculation scenario may include performing the ranking filter operation to generate a result corresponding to at least a portion of rows included in a first partition of a database table stored at the database. Related systems, methods, and articles of manufacture are provided.

公开(公告)号：US10949431B2

公开(公告)日：2021-03-16

申请号：US15946028

申请日：2018-04-05

Applicant: SAP SE

Inventor： Alena Bakulina ,  Christoph Weyerhaeuser

IPC: G06F16/2457 ,  G06F7/08 ,  G06F16/22

Abstract: Described herein is a top operator of a calculation scenario of a calculation engine that can process and rank data according to certain logical criterion requested in a query. Based on the ranked data, the top operator can provide the data results in response to the query. The top operator can provide additional useful data in the data results when certain conditions are met. The top operator can provide the data results in a useful and efficient manner.

公开(公告)号：US10482110B2

公开(公告)日：2019-11-19

申请号：US15286445

申请日：2016-10-05

Applicant: SAP SE

Inventor： Christoph Weyerhaeuser ,  Tobias Mindnich ,  Daniel Baeumges ,  Gerrit Simon Kazmaier

IPC: G06F16/28 ,  G06F16/29 ,  G06F16/22 ,  G06F16/2457

Abstract: A range k-nearest neighbor search query of a database is processed by first defining an inner rectangle bounded within a circle around a center point specified by the range k-nearest neighbor search query. Thereafter, a distance to the center point is calculated for each point within the inner rectangle. Query results are returned if k or more points are within the inner rectangle. Otherwise, at least one additional query is executed. Related apparatus, systems, techniques and articles are also described.

公开(公告)号：US20190311043A1

公开(公告)日：2019-10-10

申请号：US15946028

申请日：2018-04-05

Applicant: SAP SE

Inventor： Alena Bakulina ,  Christoph Weyerhaeuser

IPC: G06F17/30 ,  G06F7/08

Abstract: Described herein is a top operator of a calculation scenario of a calculation engine that can process and rank data according to certain logical criterion requested in a query. Based on the ranked data, the top operator can provide the data results in response to the query. The top operator can provide additional useful data in the data results when certain conditions are met. The top operator can provide the data results in a useful and efficient manner.

公开(公告)号：US10303726B2

公开(公告)日：2019-05-28

申请号：US14540781

申请日：2014-11-13

Applicant: SAP SE

Inventor： Christoph Weyerhaeuser ,  Tobias Mindnich ,  Johannes Merx ,  Joerg Schad ,  Stefan Dipper

IPC: G06F16/9535 ,  G06F16/2453 ,  G06F16/901

Abstract: According to an aspect, a system for moving a filter in a query model to ensure query semantics includes a query engine configured to obtain a query model for a query to be executed on a database. The query engine includes a query optimizer configured to instantiate the query model by merging the query with the query model. The query optimizer includes a filter mover configured to move a filter to a point within the instantiated query model such that semantics for the query within the instantiated query model is ensured.

公开(公告)号：US10255316B2

公开(公告)日：2019-04-09

申请号：US14945339

申请日：2015-11-18

Applicant: SAP SE

Inventor： Christoph Weyerhaeuser ,  Alena Bakulina ,  Tobias Mindnich ,  Johannes Merx ,  Julian Schwing

IPC: G06F17/30

Abstract: A database server receives a request to perform a primary query on a table of a database. A first table query can be generated and can include a starting row identifier, ROW A, and a number of rows, n, for generating a data chunk from the table of the database. Multiple table queries can be performed each having a different starting row identifier and each defining the number of rows forming a data chunk. The primary query can be extended with the first table query in preparation for performing the primary query on the first data chunk.

公开(公告)号：US10067980B2

公开(公告)日：2018-09-04

申请号：US14741377

申请日：2015-06-16

Applicant: SAP SE

Inventor： Christoph Weyerhaeuser ,  Tobias Mindnich ,  Johannes Merx ,  Julian Schwing ,  Daniel Patejdl

IPC: G06F17/30

Abstract: A calculation engine is described that executes calculation scenarios comprising a plurality of calculation nodes that specify operations to be performed to execute the query. One of the nodes can be a semantic node that is used to modify the query for operations requiring special handling including handling of hierarchy views. Related apparatus, systems, methods, and articles are also described.

公开(公告)号：US20170147636A1

公开(公告)日：2017-05-25

申请号：US14947627

申请日：2015-11-20

Applicant: SAP SE

Inventor： Christoph Weyerhaeuser ,  Tobias Mindnich ,  Johannes Merx ,  Julian Schwing

IPC: G06F17/30

Abstract: Methods and apparatus, including computer program products, are provided for first and last aggregation. In one aspect, there is provided a method, which may include receiving, by a calculation engine, a query; detecting, by the calculation engine, whether the query includes a first aggregation and/or a last aggregation over at least one group and at least one keyfigure; optimizing the received query, when the detecting indicates the received query includes the first aggregation and/or the last aggregation, wherein the optimizing further comprises initiating execution of the received query by at least: performing a single read of a table, detecting, from the single table read, at least one group, and indicating, in the detected at least one group, the first aggregation in the at least one keyfigure and/or the last aggregation in the at least one keyfigure; and returning, for the at least one detected group, the indicated first aggregation and/or the indicated second aggregation. Related apparatus, systems, methods, and articles are also described.

公开(公告)号：US20160350374A1

公开(公告)日：2016-12-01

申请号：US14723205

申请日：2015-05-27

Applicant: SAP SE

Inventor： Christoph Weyerhaeuser ,  Tobias Mindnich ,  Johannes Merx ,  Julian Schwing ,  Daniel Patejdl ,  Isil Pekel

IPC: G06F17/30

CPC classification number: G06F17/30466

Abstract: A query is received by a database server from a remote application server that is associated with a calculation scenario that defines a data flow model including one or more calculation nodes including stacked multiproviders. Subsequently, the database server instantiates the calculation scenario and afterwards optimizes the calculation scenario. As part of the optimization, the calculation scenario is optimized by merging the two multiproviders. Thereafter, the operations defined by the calculation nodes of the optimized calculation scenario can be executed to result in a responsive data set. Next, the data set is provided to the application server by the database server.

Abstract translation: 来自远程应用服务器的数据库服务器接收到查询，该远程应用程序服务器与定义包括一个或多个计算节点（包括堆叠的多维数据集）的数据流模型的计算方案相关联。 随后，数据库服务器实例化计算方案，然后优化计算方案。 作为优化的一部分，通过合并两个多维数据集优化计算方案。 此后，可以执行由优化的计算场景的计算节点定义的操作以产生响应数据集。 接下来，由数据库服务器将数据集提供给应用服务器。

公开(公告)号：US20160224628A1

公开(公告)日：2016-08-04

申请号：US15094708

申请日：2016-04-08

Applicant: SAP SE

Inventor： Christoph Weyerhaeuser ,  Daniel Baeumges ,  Tobias Mindnich ,  Thomas Legler

IPC: G06F17/30

CPC classification number: G06F17/30471 ,  G06F17/30463 ,  G06F17/30466 ,  G06F17/30867

Abstract: A select query or a data referencing a calculation scenario is received by a database server from a remote application server. The specified calculation scenario is one of a plurality of calculation scenarios and it defines a data flow model that includes one or more calculation nodes. Each calculation node defines one or more operations to execute on the database server. Thereafter, the database server instantiates the specified calculation scenario and executes the operations defined by the calculation nodes of the instantiated calculation scenario to result in a responsive data set. This data set is then provided by the database server to the application server. Related apparatus, systems, techniques and articles are also described.

Abstract translation: 数据库服务器从远程应用程序服务器接收到选择查询或引用计算方案的数据。 指定的计算场景是多个计算场景之一，并且其定义包括一个或多个计算节点的数据流模型。 每个计算节点定义在数据库服务器上执行的一个或多个操作。 此后，数据库服务器实例化指定的计算方案，并执行由实例化计算方案的计算节点定义的操作，以生成响应数据集。 然后，该数据集由数据库服务器提供给应用服务器。 还描述了相关设备，系统，技术和物品。