| 释义 |
aggregation queries
基本例句
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。
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。 |