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SPLITTING A QUERY INTO NATIVE QUERY OPERATIONS AND POST-PROCESSING OPERATIONS

机译:将查询拆分为本地查询操作和后处理操作

摘要

Techniques for splitting a query into native query operations and post-processing operations are provided. In one embodiment, a user query including a plurality of search parameters is received. Expressions representing the plurality of search parameters in the user query are determined. A first subset and a second subset of the expressions are identified. Each expression of the first subset corresponds to one of a plurality of native query operations executable by a database platform, and each expression of the second subset corresponds to one of a plurality of predefined post-processing operations not executable by the database platform. A database query is generated based on one or more expressions of the first subset, and a post-processing query is generated based on each expression in the second subset. The database query is executed by the database platform, then the post-processing query is executed on the results from database platform.
机译:提供了用于将查询分为本地查询操作和后处理操作的技术。在一个实施例中,接收包括多个搜索参数的用户查询。确定表示用户查询中的多个搜索参数的表达式。标识表达式的第一子集和第二子集。第一子集的每个表达式与数据库平台可执行的多个本地查询操作之一相对应,第二子集的每个表达式与数据库平台不可执行的多个预定义后处理操作之一相对应。基于第一子集的一个或多个表达式生成数据库查询,并且基于第二子集中的每个表达式生成后处理查询。数据库查询由数据库平台执行,然后对数据库平台的结果执行后处理查询。

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