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。
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 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。
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
未能启用约束。一行或多行中包含违反非空、唯一或外键约束的值。
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
未能启用约束。一行或多行中包含违反非空、唯一或外键约束的值。
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