展示检索数据显示数据或事件数据，从内部或外部存储器。
Display the retrieved data display data or event data from internal or external memory.
“m”可以为固定的事件数或一个无穷值。
"M" could be either a fixed number of events or an infinite number.
支持两种类型的查询：事件解决方案查询（它们只返回事件）和回答解决方案查询（它们可以返回任何非事件数据或聚合的结果）。
The two kinds of queries that are supported are: event solution queries, which return only events and the answer solution queries, which can return any non-event data or aggregated results.
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