The statistical view currently does not support aggregate functions like SUM, MAX, distinct operations or set operation like UNION, EXCEPT or INTERSECT.
当前,统计视图不支持SUM、max之类的聚合函数,也不支持distinct操作和UNION、EXCEPT或INTERSECT之类的集合操作。
This paper introduces a solution solving the problem of low response speed of aggregate operations in statistical database (SDB_s).
本文主要论述利用专家系统技术解决统计数据库中聚集操作响应速度慢和瓶颈问题。
Every statistical parameter and standard value can be used or consulted in using design method of probability ultimate state to analyse coal gange light aggregate concrete basic products.
这些强度的统计参数和标准值可供按概率极限状态设计方法分析煤矸石轻骨料混凝土各基本构件使用或参考。
应用推荐