公开(公告)号：US20190018876A1

公开(公告)日：2019-01-17

申请号：US15650800

申请日：2017-07-14

Applicant: SAP SE

Inventor： Julian Schwing ,  Johannes Merx ,  Christoph Weyerhaeuser

IPC: G06F17/30

Abstract: A method may include executing a calculation scenario at a database. The calculation scenario may include a parent multiprovider aggregating data from a child multiprovider. The calculation scenario may be executed by mapping a first count keyfigure of the child multiprovider to a first sum keyfigure of the parent multiprovider if the child multiprovider aggregates data from part providers but not from multiproviders. A second sum keyfigure of the child multiprovider may be mapped to the first sum keyfigure of the parent multiprovider if the child multiprovider aggregates data from multiproviders but not from any part providers. The first count keyfigure of the child multiprovider may be mapped to a second count keyfigure of the parent multiprovider and the second sum keyfigure of the child multiprovider may be mapped to the first sum keyfigure of the parent multiprovider if the child multiprovider aggregates data from part providers and multiproviders.

公开(公告)号：US20170322952A1

公开(公告)日：2017-11-09

申请号：US15150371

申请日：2016-05-09

Applicant: SAP SE

Inventor： Julian Schwing ,  Johannes Merx ,  Christoph Weyerhaeuser

IPC: G06F17/30

CPC classification number: G06F16/2453

Abstract: A calculation engine of a database management system is described. In some implementations, the calculation engine receives a calculation scenario including a plurality of join operations defining an intersection between at least two nodes. The calculation engine optimizes a first join which is of a certain cardinality, and for which no attributes are requested, other than a join attribute. The optimization includes determining whether a static filter is present for a first node or a second node of the first join, and pruning the first node and/or the second node from the hierarchical join when the attribute is not requested from the first node or the second node and/or when the static filter is not present for the first node or the second node. Related systems, methods, and articles of manufacture are also described.

公开(公告)号：US20170147637A1

公开(公告)日：2017-05-25

申请号：US14946658

申请日：2015-11-19

Applicant: SAP SE

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

IPC: G06F17/30

CPC classification number: G06F17/30448

Abstract: Methods and apparatus, including computer program products, are provided for union node pruning. In one aspect, there is provided a method, which may include receiving, by a calculation engine, a query; processing a calculation scenario including a union node; accessing a pruning table associated with the union node, wherein the pruning table includes semantic information describing the first input from the first data source node and the second input from the second data source node; determining whether the first data source node and the second data source node can be pruned by at least comparing the semantic information to at least one filter of the query; and pruning, based on a result of the determining, at least one the first data source node or the second data source node. Related apparatus, systems, methods, and articles are also described.

公开(公告)号：US11893026B2

公开(公告)日：2024-02-06

申请号：US16372951

申请日：2019-04-02

Applicant: SAP SE

Inventor： Julian Schwing ,  Christoph Weyerhaeuser ,  Johannes Merx ,  Davide Corradi ,  Timo Hochberger

IPC: G06F16/2453 ,  G06F16/2455 ,  G06F16/22 ,  G06F16/25 ,  G06F16/21

CPC classification number: G06F16/24561 ,  G06F16/217 ,  G06F16/2282 ,  G06F16/24544 ,  G06F16/256

Abstract: A calculation engine of a database management system is described that determines a multiprovider includes a first data source and a second data source that each require different approaches for operation optimization. The calculation engine can split the multiprovider into a first node corresponding to a first operation compatible with the first data source and a second node corresponding to a second operation compatible with the second data source. The calculation engine can perform the first operation at the first data source to produce a first result and perform the second operation at the second data source to produce a second result. The calculation engine can then merge the first result and the second result according to a third operation, and perform such third operation at the first data source.

公开(公告)号：US11188540B2

公开(公告)日：2021-11-30

申请号：US15945605

申请日：2018-04-04

Applicant: SAP SE

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

IPC: G06F16/2455 ,  G06F16/22

Abstract: Described herein includes a calculation scenario of a calculation engine that efficiently filters and joins data for processing. The calculation engine enhances the performance of the join operations by allowing join inputs to be pre-filtered more effectively. Such join operations can allow for faster processing times, and a reduction in the amount of data to be joined, resulting in more efficient processing.

公开(公告)号：US11106666B2

公开(公告)日：2021-08-31

申请号：US14723627

申请日：2015-05-28

Applicant: SAP SE

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

IPC: G06F16/00 ,  G06F16/2453 ,  G06F16/25

Abstract: A query that requests a filter attribute is received by a database server from a remote application server that is associated with at least one calculation scenario that includes calculation nodes having relational operators and calculation nodes having non-relational operators. The calculation nodes having relational or non-relational operators are optimized by a calculation engine model optimizer and the calculation nodes having relational operators are further optimized by a relational database optimizer. Thereafter, the operations defined by the optimized calculation nodes can be executed to result in a responsive data set. Next, the data set is provided to the application server by the database server.

公开(公告)号：US11023468B2

公开(公告)日：2021-06-01

申请号：US14947627

申请日：2015-11-20

Applicant: SAP SE

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

IPC: G06F16/24 ,  G06F16/2455

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：US10324930B2

公开(公告)日：2019-06-18

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: G06F16/20 ,  G06F16/2453 ,  G06F16/27 ,  G06F16/28

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.

公开(公告)号：US10324927B2

公开(公告)日：2019-06-18

申请号：US14946658

申请日：2015-11-19

Applicant: SAP SE

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

IPC: G06F16/2453

Abstract: Methods and apparatus, including computer program products, are provided for union node pruning. In one aspect, there is provided a method, which may include receiving, by a calculation engine, a query; processing a calculation scenario including a union node; accessing a pruning table associated with the union node, wherein the pruning table includes semantic information describing the first input from the first data source node and the second input from the second data source node; determining whether the first data source node and the second data source node can be pruned by at least comparing the semantic information to at least one filter of the query; and pruning, based on a result of the determining, at least one the first data source node or the second data source node. Related apparatus, systems, methods, and articles are also described.

公开(公告)号：US20170323001A1

公开(公告)日：2017-11-09

申请号：US15150365

申请日：2016-05-09

Applicant: SAP SE

Inventor： Julian Schwing ,  Johannes Merx ,  Christoph Weyerhaeuser

IPC: G06F17/30

CPC classification number: G06F16/284 ,  G06F16/2365 ,  G06F16/2445

Abstract: A calculation engine of a database management system is described. In some implementations, the calculation engine receives a calculation scenario including a plurality of calculation views comprising one or more relational operations. The calculation engine determines whether a first calculation view includes a second calculation view configured as an operand of one of the relational operations of the first calculation view, and also determines whether the second calculation view comprises a non-relational operation. The calculation engine further converts the plurality of calculation views into a calculation plan via merging the first calculation view with the second calculation view when the first calculation view is determined to comprise the second calculation view as an operand, and replacing the second calculation view with a view search operation when the second calculation view is determined to comprise the non-relational operation. Related systems, methods, and articles of manufacture are also described.