[GitHub] [incubator-shardingsphere] cherrylzhao commented on issue #2979: support hint in sharding-proxy

[GitBox <gi...@apache.org>]

cherrylzhao commented on issue #2979: support hint in sharding-proxy
URL: https://github.com/apache/incubator-shardingsphere/issues/2979#issuecomment-528689608
 
 
   you are right, proxy should ensure the working thread is same for one client JDBC request, in fact XA and PostgreSQL of Proxy was implemented like that, we can refer to these. based on this condition，we should consider about how to transport hint value
   1. transport hint value in every sql wrapped with `/** **/` grammer
       I think this is hard to implement, it should let user wrap every sql, or we provide a proxy client sdk to parse the user sql.
   2. transport hint value using sctl grammar 
      it only need to send an additional stcl sql, it is easy to implement.
   

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