I can then use built-in aggregate functions on the array to get the size and sum of those days overdue and compute an average.

然后我可以使用内置的聚合函数来获取过期天数的大小和总和并计算平均值。

youdao

Because the UPDATE is in the FROM clause it is easy to use the standard SUM to aggregate the end result.

因为UPDATE在from子句中，所以很容易使用标准SUM来聚集最终结果。

youdao

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。

youdao

While the income effects sum to zero, the substitution effects aggregate.

WSJ: Arthur B. Laffer: Unemployment Benefits Aren't Stimulus

It had an aggregate score of 229 - not precisely the sum of the three percentages, because of rounding - ranking it 35th out of 47 schools locally in the conventional league tables.

BBC: School 'value' shock is in store

Because of the way the aggregate is calculated it is not necessarily exactly the same as the sum of the three test results.

BBC: NEWS | UK | Education | Guide to the primary school tables