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Posted to notifications@shardingsphere.apache.org by GitBox <gi...@apache.org> on 2019/07/31 02:47:41 UTC
[GitHub] [incubator-shardingsphere] terrymanu commented on issue #2793:
first sql query is very slow , may need more than 1 secord,
may cause by AntlrParsingEngine.parse()
terrymanu commented on issue #2793: first sql query is very slow , may need more than 1 secord, may cause by AntlrParsingEngine.parse()
URL: https://github.com/apache/incubator-shardingsphere/issues/2793#issuecomment-516671859
First time to parse SQL need use ANTLR, ANLTR is pretty slow, from second times, ShardingSphere will cache them and make it faster.
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