The INDEX attribute is optional and may be used to specify an index name.

INDEX 属性是可选的，可用于指定一个索引名。

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In the full-text index example above, this identifier would be the index name.

在上面的全文索引示例中，这个标识符是索引名称。

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In the 11.70 UC2 and later versions, you can specify an index name directly.

在11.70 UC2及更新的版本中，可直接指定索引名。

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