In practice, as you have seen, the result tree is not materialized in memory, so the serializer is handed the nodes of the tree one at a time in document order.
实际上，如您所见，结果树没有在内存中具体化，所以串行化器将按文档顺序一次交出树的一个节点。
It helps eliminate the costs of traditional performance tuning, such as indices, materialized query tables (MQTs), and query plan tuning that required extensive time and expensive resources.
它有助于消除传统性能调优的成本，比如索引、物化查询表(Materialized Query Table, MQT)、以及需要大量时间和昂贵资源的查询计划调优。
These Spaces are materialized in a process of disappearance, of time unfolding.
这些空间随着消隐的过程、时间的流逝逐渐物化。
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