发明授权
- 专利标题： Calculation models using annotations for filter optimization
- 专利标题（中）： 使用注释进行过滤器优化的计算模型
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申请号： US13457315申请日： 2012-04-26
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公开(公告)号： US08914387B2公开(公告)日： 2014-12-16
- 发明人: Christoph Weyerhaeuser , Tobias Mindnich , Daniel Baeumges , Gerrit Simon Kazmaier
- 申请人： Christoph Weyerhaeuser , Tobias Mindnich , Daniel Baeumges , Gerrit Simon Kazmaier
- 申请人地址： DE Walldorf
- 专利权人： SAP AG
- 当前专利权人： SAP AG
- 当前专利权人地址： DE Walldorf
- 代理机构： Mintz Levin Cohn Ferris Glovsky and Popeo, P.C.
- 主分类号： G06F7/00
- IPC分类号： G06F7/00 ; G06F17/30
摘要：
A query statement is received that requires at least one calculated attribute. Thereafter, a data flow graph is generated that includes a plurality of nodes for executing the query. At least one of the nodes corresponds to the at least one calculated attribute and has at least one level of child nodes. The data flow graph is generated by generating at least one filter for each of the nodes corresponding to the at least one calculated attribute and by pushing down the generated filters to a corresponding child node. Once the data flow graph is generated, execution of the query can be initiated using the generated data flow graph. Related apparatus, systems, techniques and articles are also described.