[GitHub] [incubator-shardingsphere] terrymanu commented on issue #3676: Is there any good way to handle with parsing sql first time, which is taking too many time?

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terrymanu commented on issue #3676: Is there any good way to handle with parsing sql first time, which is taking too many time?
URL: https://github.com/apache/incubator-shardingsphere/issues/3676#issuecomment-562523927
 
 
   Because parse SQL by ANTLR is slow, and ShardingSphere save the 1st parse result into cache.
   Please see details here: https://shardingsphere.apache.org/document/current/en/features/sharding/principle/parse/
   
   I don't think we can enhance the performance before the AST into cache. If you want, you can consider about  preheat your SQL.
   

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