公开(公告)号：US20170139982A1

公开(公告)日：2017-05-18

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

CPC classification number: G06F17/30395 ,  G06F17/30557

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：US20160350368A1

公开(公告)日：2016-12-01

申请号：US14723627

申请日：2015-05-28

Applicant: SAP SE

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

IPC: G06F17/30

CPC classification number: 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.

Abstract translation: 请求过滤器属性的查询由数据库服务器从与包括具有关系运算符的计算节点和具有非关系运算符的计算节点的至少一个计算方案相关联的远程应用程序服务器接收。 具有关系或非关系运算符的计算节点由计算引擎模型优化器进行优化，并且具有关系运算符的计算节点由关系数据库优化器进一步优化。 此后，可以执行由优化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。