Returning a reference to the sorted data gives us just the right amount of flexibility for this.
为了它返回一个引用到排序的数据给我们仅仅正确的灵活的总量。
Invented by a young census worker named Herman Hollerith, it automatically sorted data by a code of holes punched in Manila CARDS.
这是一位名叫赫尔曼·霍勒·里斯的青年人口普查工作者发明的。该装置通过马尼拉纸板上的穿孔代码能自动分类整理数据。
Next, operators (12) and (11) can be both skipped because they are not applying any predicates, just sorting and scanning from the sorted data, and the SORT is not distincting.
接下来可以跳过操作 (12) 和 (11),因为它们没有应用于断言,仅仅是排序和从排序后的数据中扫描,而 SORT 不是独特的。
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