To do this, set the -webkit-column-count style, and sett the accompanying -webkit-column-rule style to get the separators.

为此，设置 -webkit-column-count 样式，并设置配套的 -webkit-column-rule 样式来获取这些分隔符。

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But if you use multiple aggregations with the same grouping keys, or multiple counting functions that count the same column, it will not significantly increase the execution time of the rule.

但是，如果使用具有相同分组关键字的多个聚合，或者对相同列进行计数的计数函数，其不会显著增加规则的执行时间。

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Note that if several counting functions or tests operate on the same column, then the sort and count operations only need to be done once.

注意，如果多个计数函数或测试在同一列上运行，那么排序与计数操作仅需做一次。

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