Oracle学习参考，包括ROWID的概念、索引的概念、唯一索引、组合索引、位图索引和 基于函数的索引等。

Oracle Learning Resources, including the ROWID of the concept, the concept of indexing, unique indexes, composite indexes, bitmap indexes and function-based indexes.

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基于hash的一个扩展索引支持一个名为equalstring的函数，该函数比较两个给定的字符串，看看它们是否相等。

A function called equalString, which compares two given strings to see if they are equal, is supported by an extended index based on hashing.

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position()函数返回节点集中节点的基于 1的索引。

The position() function returns the one-based index of the node within the node set.

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指数函数返回基于您提供的列表索引。

The Index function returns the index based upon the list you provide.

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指数函数返回基于您提供的列表索引。

The Index function returns the index based upon the list you provide.

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