具有分布不均匀的数据的列和具有少量distinct值的列都不应该被选作分区键。
Columns with unevenly distributed data and columns with a small number of distinct values should not be chosen as a partitioning key.
这是有意义的,因为仅在存在很多重复值或者数据分布不均匀的情况下,分布统计信息才重要。
This makes sense because distribution statistics are important in the case of many duplicates or uneven distributed data.
针对直流接地极和杆塔接地极上电流分布不均匀的问题,提出了计算电流分布的一种简化方法。
A new method is presented to calculate the non-uniform of current distribution on grounding electrode.
So it turns out that the very first one, voters are not evenly distributed is certainly true, it's undoubtedly true.
首相想到的就是,现实中选民是不均匀分布的,这的确是毋庸置疑的
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