如果希望指定要创建的索引的类型，只需单击创建索引并查看Properties视图的Details部分。

If you want to specify the type of index that you want created, simply click index that was just created and look at the Details section of the Properties view.

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函数索引可以根据用户定义的类型创建。

A functional index can be created on user defined types.

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查询谓词中的数据类型与索引定义是兼容的。

The data type in the query predicate and the index definition are compatible.

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