multiple adj. 1.多重的;复合的,复式的,多数的,多样的。 2.倍数的,倍。 3.【电学】并联的;多路的,复接的。 4.【植物;植物学】聚花的。 a man of multiple interests 兴趣广博的人。 n. 1.【数学】倍数。 2.【电学】并联;多路系统。 3.相联成组。 4.成批生产的艺术品〔画、雕塑、工艺品等〕。 common multiple 公倍数。 least common multiple 最小公倍数。
Compare multiple queries by viewing them on individual tabs or by splitting them either vertically or horizontally in the results window 你可以在单独的窗口,或者把结果窗口里的内容横向或纵向的分割来进行多种查询结果的比较。
If it is hard to write a single closed sql query for the desired task, it might be easier to run multiple queries and post-process the results in a program 如果为一个期望的任务编写单独的(“闭合”)sql查询功能很困难的话,那么在程序中运行多个查询操作和后期处理查询结果就很可能容易些。
Using an and / or dag representing for multiple queries and views, we first formalize the process of propagating source relation changes to the materialized views by exploiting common sub-expressions between views and by using other materialized views that are not affected by these changes 使用视图间的通用子表达式和应用未被影响的实视图来将源关系的变化传播到实视图。随后,给出了一个判断实视图是否有用的算法。