Therefore, DB2 can use a DOUBLE index for faster join processing.

因此，DB 2可以使用DOUBLE索引用于快速连接处理。

youdao

As you see in Table 3, a string predicate can only be evaluated with an XML index of type VARCHAR, while a numeric predicate can only be evaluated with an index of type DOUBLE.

正如您在表3中所看到的，字符串谓词只能由varchar类型的xml索引进行计算，而数值谓词只能由double类型的索引进行计算。

youdao

For example, the index idx1 on author id attributes is defined as DOUBLE since it is expected that these IDs are numeric values.

例如，将author id属性上的索引idx 1定义为DOUBLE，是希望这些id为数值。

youdao

No surprise, then, that health care inflation is currently going up 9% a year, more than double the Consumer Price Index.

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Or, better yet, one that pays double or triple the index?

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The index shows double digit annual growth since fourth quarter 2012.

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