...单一字段(Single Key Column)或复合字段(Composite Key Columns)索引 458 9.2.5 唯一键(Unique Key)或非唯一键(Non-Unique Key)索引 467 9.2.6 反转键(Reverse Key)索引 468 9.2.7 基于函数的索引(Function Based Index) 471 9.2.8 平衡树索引的维护 477 ...
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Recall that this script simply tokenizes the input to key-value pairs, where each value will be 1 (non-unique input).
回想此脚本简单地将输入标记到键值对，此处每个值都将是 1（非惟一输入）。
The table is logically joined to itself, and the more selective non-leading index keys are applied as index bound filters to each unique combination of the leading key values.
首先在逻辑上将表与其自身连接，然后将更具有选择性的非起始索引键作为索引绑定过滤器，应用于起始键值的每个惟一的组合。
The key point here is that you are indeed looking for unique, non-context-related identifiers for each type.
关键在于，实际上我们正在寻找的是适用于每种类型的、惟一的、与上下文无关的标识符。
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