243006306 opened a new issue #10196:
URL: https://github.com/apache/shardingsphere/issues/10196


   The following problems are found in the project transformation sharding-jdbc 
4.1.1 scheme
   
   1. Why does hint still need to go through the parsing process? Because my 
SQL is relatively complex (subquery, Union). Now if I find that the problem can 
not be resolved, I will randomly select a data source and do not enter the hash 
function of the hint algorithm. This makes me puzzled. I feel that if I can't 
resolve it, I can throw out the exception, A data source should not be randomly 
selected, and the hint mode should be able to skip the parsing process and 
merging process.
   
   2. When I only split the database, the default partition rule does not take 
effect. I need to configure actual data nodes. I have hundreds of tables in a 
database. I think this is unreasonable. I should use wildcards, or if it is not 
configured by default, it is the whole database, or add and exclude some tables 
to configure.


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