[GitHub] [incubator-shardingsphere] tristaZero commented on issue #4371: Sharding-JDBC SQL shard loss parameter

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tristaZero commented on issue #4371: Sharding-JDBC SQL shard loss parameter
URL: https://github.com/apache/incubator-shardingsphere/issues/4371#issuecomment-590808629
 
 
   Hi @techzhou i appreciated your debug action. You know, help comes behind self-help. :)
   
   Your SQL and Sharding rule is simple and has been covered by our integrated tests, so i have no idea at the first glance. Could you debug it deep to help solve this issue?
   
   Looking at the error log below, i speculated the cause is `bad parsing of SQL`.
   ```
   org.apache.shardingsphere.sql.parser.core.extractor.impl.common.column.ColumnExtractor.getColumnSegment(ColumnExtractor.java:45) 
   ```
   Sharding Parser can not extract corresponding columns, so could you make a break point at line 45 of ColumnExtractor.java or `sout` the value of `columnNode`.

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