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- Aggregation queries with group-by is now a fundamental issue of data warehouse in ROLAP.Materialized views can significantly improve the performance of query. 摘要 分组聚集查询已成为数据仓库领域研究的核心问题之一,实视图是提高分组聚集查询性能的有效手段。
- multiple range aggregation queries 范围聚集查询
- Based on randomizing techniques, this paper discussed how the sketch-based approach estimates approximate answers to aggregate queries. 摘要讨论了基于草图的复杂聚集查询的近似处理算法。
- We also added a so-called STAT relation to facilitate aggregational queries in AR. 我们还增加了一个所谓的统计关系,以促进在AR的聚集查询。
- Aggregation queries in distributed inconsistent databases 分布式非一致性数据的聚集查询
- HierPrefixCube retains advantages on computation and organization of PrefixCube, and it can directly support aggregate queries on levels of the dimension hierarchy. 它不仅保留了前缀立方在计算和组织结构上的优点,又能直接和充分支持维层次级的聚集查询。
- Sharing for Multiple Range Aggregation Queries over Spatio-temporal Streams 一种时空数据流中范围聚集查询共享策略
- By understanding the principles of aggregate queries and the Query and View Designer's behavior, you can create logically correct aggregate queries. 通过理解聚合查询的原则以及查询和视图设计器的行为,可以创建逻辑关系正确的聚合查询。
- predictive range aggregate queries 预测范围聚集查询
- He tried to dodge the reporters' queries. 他试图躲闪记者的询问。
- A small mass of tissue or aggregation of cells. 结组织的小结块或细胞的聚集
- The aggregation of immense farms under white ownership was a trend at that time. 大规模的农场聚集在白人的所有权之下,这在当时是一股潮流。
- The savanna was covered by the aggregation of herds. 这个大草原遍地是牧群。
- Predictive Continuous Aggregate Queries over Data Streams 数据流上的连续预测聚集查询
- aggregation queries 聚集查询
- The request dispatching mechanism is responsible for aggregating query string parameters when forwarding or including requests. 当转向或包含请求时请求分发机制是有责任集合查询字符串参数的。
- The main query does not contain a GROUP BY clause, and is not an aggregate query, or the subquery returns exactly one value. 主查询不包含GROUP BY子句并且不是汇总查询,或者子查询恰好返回一个值。
- Your interesting report raises several important queries. 你的精彩报告引出了几个重要问题。
- London was the biggest aggregation of human life. 伦敦是人文荟萃之区。
- To reduce the expensive access to archive data, the characteristics of aggregate data query were analyzed, and the aggregate query language and its rewriting method were proposed. 摘要为了减少在计算和存档数据流的过程中对昂贵的存档数据的存取,分析了聚集数据查询的特点,并引入了聚集查询语言和聚集查询重写方法。