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Posted to notifications@shardingsphere.apache.org by GitBox <gi...@apache.org> on 2020/05/15 06:21:16 UTC

[GitHub] [shardingsphere] tuohai666 commented on issue #5611: how do you guys improve performance of parsing SQL at first time in the version 4.1.0 ?by upgrading the version of antlr4 to 4.7.2?

tuohai666 commented on issue #5611:
URL: https://github.com/apache/shardingsphere/issues/5611#issuecomment-629052104


   > Have you done performance testing? How much performance has been improved? 
   
   Yes. About 100 ~ 1000 times faster for long SQL.
   
   How do you judge the slow part is parse? And what the SQL it is?


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