group by

基本解释

The XQuery language does not provide an explicit group-by construct.
XQuery 语言不提供显式的 group-by 结构。
The SQL generated by the previous instructions has only a single grouping set in the GROUP-BY clause.
前面步骤产生的 SQL 在 GROUP BY 子句中只有一个分组集。
Like group-by, it uses node values rather than patterns to demarcate groups, but it is aware of the sequence of elements in the population.
与 group-by 类似，它也使用节点值而不是范式来划分组，不过它能够识别总体中元素的顺序。

Now,the event is administered by a twelve-person group called the Take Our Daughters and Sons to Work Foundation.
A lot of journals do blind reviewing now because of the evidence I talked about before regarding sexual stereotypes, that whether it has a male name or a female name makes a difference. So those are not-- those are group level in that they're not saying, "You get rid of your prejudices by trying harder."
现在很多报刊都审查论文都是匿名的,原因就是我刚才讲的,性别刻板印象，名字会透露作者是男性或女性,这样会影响审查公正，所以…,这些群体要摆脱刻板印象，并不是一味压抑就行的“
耶鲁公开课 - 心理学导论课程节选
And so if incidentally, you're a representative of a student group and the alike and your Google calendar is not -- in here, you can check just by flipping through the various-- we have over 200 calendars right now and you can search through them here.
如果你是一个学生团体的代表,你的Google日历在此不存在,你可以检查其他各种各样的-,目前我们有200多种日历,你可以在它们之中进行查找。
哈佛公开课 - 计算机科学课程节选

Evidence of the problems inherent in banning anti-satellite weapons were illuminated over two decades ago by a Reagan Administration interagency group co-chaired by then-Deputy Assistant Secretary of Defense for Nuclear Forces and Arms Control Policy, Frank J.
CENTERFORSECURITYPOLICY: Straw in the solar wind