代理私有内存的常见消费者是排序堆内存，代理在查询执行期间使用这部分内存来对记录行进行排序。
The typical consumer of agent private memory is the sort heap memory that is used by the agent to sort rows during query execution.
日本的户外广告牌能够即时查询到过路者的消费记录，根据这些消费记录有针对性的显示不同的广告信息。
Billboards in Japan peer back at passersby, assessing how they fit consumer profiles, and instantly change displayed messages based on those assessments.
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