New features added to query time performance are as follows.
查询中增加的新特性列举如下。
So we create a spatial grid index that will be used at query time.
所以我们创建一个空间网格索引,这个索引将在查询时用到。
The ability to load data into HashMaps where column names are not known at query time.
将数据加载到 HashMaps 的功能(在查询时列名是未知的)。
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