[GitHub] meazza commented on issue #5480: SQL: not in operator can cause NullPointerException

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

meazza commented on issue #5480: SQL: not in operator can cause NullPointerException
URL: https://github.com/apache/incubator-druid/issues/5480#issuecomment-412438737
 
 
   ```
   {
   "error": "Unknown exception",
   "errorMessage": "Cannot build plan for query: SELECT COUNT(*) AS TheCount FROM data_source where dt='2018-01-01' AND biz_line NOT IN (select biz_line from data_source where dt='2018-01-01')",
   "errorClass": "io.druid.java.util.common.ISE",
   "host": null
   }
   ```
   it seems return 500 ISE now, is there a plan to support this feature: not in sub-query expression. If it's necessary, I'd like to contribute to this feature. @gianm

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