tuohai666 commented on issue #8457:
URL: https://github.com/apache/shardingsphere/issues/8457#issuecomment-736541693


   Statement will not be cached while PreparedStatement will be cached.
   
   Why Statement will not be cached?
   Imagine I insert rows whose id is from 1~1000000, all the 1000000 SQLs are 
different and the cache will not work.
   
   Why PreparedStatement cache works?
   Imagine I insert rows whose id is from 1~1000000, **id = ?** will be cached 
and is the only SQL to be cached. All the 1000000 SQLs share one parse result.


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