x782544391 commented on issue #32237:
URL: 
https://github.com/apache/shardingsphere/issues/32237#issuecomment-2247369476

   `DynamicDataSource` is a subclass of 
org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource. In my 
question,  it is actually a DruidDataSource.
   
   I just wonder it cause NPE when query that sharding table joining 
non-sharding table and query-result from more than one sharding table in 
shardingsphere-5.1.1, but not throws Exception in sharding-jdbc-3.1.0. 
   
   Must all tables be sharding-tables for one query SQL in 5.1.1?


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