strongduanmu commented on issue #20058:
URL: 
https://github.com/apache/shardingsphere/issues/20058#issuecomment-1383439636

   Hi @TeslaCN, I took a look at the implementation of the `VOLUME_RANGE` 
algorithm. It is an auto sharding algorithm and is recommended to be used in 
the auto sharding configuration. Users do not need to care about the underlying 
actual table. 
   
   In addition, because the range sharding algorithm has values outside the 
boundary, two additional shardings are added to the algorithm to store these 
values outside the boundary. If we use this algorithm in the standard sharding 
algorithm, it will indeed be confusing, and I will think about how to optimize 
it.


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