[GitHub] [shardingsphere] wsm12138 commented on issue #20491: Sometimes `schema` in proxy case sensitive,sometimes `schema` in proxy not case sensitive？

[GitBox]

wsm12138 commented on issue #20491:
URL: 
https://github.com/apache/shardingsphere/issues/20491#issuecomment-1225469614

   1. drop schema system;  —— it should't  sucess,because we can find table 
`acm` in zk
   2. drop schema SYSTEM; —— it should't ERROR,because we can find `SYSTEM`  in 
zk
   3. 
   ```
   sharding_db=> create schema system;
   CREATE SCHEMA
   sharding_db=> drop schema SYSTEM;
   ERROR:  java.lang.NullPointerException
   sharding_db=>
   
   ```
   Why have NPE?
   <img width="398" alt="image" 
src="https://user-images.githubusercontent.com/86462784/186383202-e4d9ce64-14a2-4497-9c3c-d1f0d458e597.png";>
   
   <img width="1127" alt="image" 
src="https://user-images.githubusercontent.com/86462784/186383237-16950e95-e473-4dfd-8e7b-50d019755038.png";>
   


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