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Calculation models using annotations for filter optimization

机译:使用注释进行过滤器优化的计算模型

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.
机译:收到一条查询语句,该语句要求至少一个计算出的属性。此后,生成数据流图,该数据流图包括用于执行查询的多个节点。节点中的至少一个对应于至少一个计算出的属性并且具有至少一级子节点。通过为与至少一个计算出的属性相对应的每个节点生成至少一个过滤器,并将所生成的过滤器下推到相应的子节点,来生成数据流图。一旦生成了数据流图,就可以使用生成的数据流图来启动查询的执行。还描述了相关的装置,系统,技术和文章。

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