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[jira] [Created] (CALCITE-2597) RelDataTypeImpl:digest can not describe a type completely.


huangjiatian created CALCITE-2597:
-------------------------------------

             Summary: RelDataTypeImpl:digest can not describe a type completely.
                 Key: CALCITE-2597
                 URL: https://issues.apache.org/jira/browse/CALCITE-2597
             Project: Calcite
          Issue Type: Bug
          Components: core
            Reporter: huangjiatian
            Assignee: Julian Hyde
         Attachments: image-2018-09-28-13-00-16-440.png, image-2018-09-28-13-11-43-515.png, image-2018-09-28-13-15-19-711.png, image-2018-09-28-13-17-19-369.png

I met a strange question when i use Flink SQL API.

I found two difference type are considered equal.
!image-2018-09-28-13-11-43-515.png!
After debug, i found the hashCode method and equals method in RelRecordType just consider "digest".
!image-2018-09-28-13-15-19-711.png!
But some time, "digest" can not describe a type completely, More information in the "fieldList".
!image-2018-09-28-13-17-19-369.png!



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