set operators中文什么意思

集合运算符

• set:    vt. (set; setting) ...
• operator:    n. 1.操作者，机务员；司机，驾驶 ...
• telephone operators set:    话务员头戴送受话器组; 话务员头载送 ...

例句与用法

1. At the time of establishing two data models , we have redefined the set operators and relation operators accordingly
   在建立这两种模型的同时,本文也分别重新定义了各自模型的集合运算和关系运算。
2. Union all is the only set operator allowed between the last anchor member and first recursive member , and when combining multiple recursive members
   在最后一个定位点成员和第一个递归成员之间，以及组合多个递归成员时，只能使用union all集合运算符。
3. The transact - sql union set operator can be used within a view to combine the results of two or more queries from separate tables into a single result set
   Transact - sql union集合运算符可在视图内使用，将单独表的两个或多个查询的结果组合到单一的结果集中。