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https://issues.apache.org/jira/browse/FLINK-11803?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16783121#comment-16783121
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Jingsong Lee commented on FLINK-11803:
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I think we should use InternalType in table interaction with calcite,
expressions, table execution(code generator and operators). InternalTypes will
help us simplify logical inference(Limited types) and make physical
calculations more flexible(Not bound to physical format).
But use TypeInformation in source, sink, udx, interaction with state,
interaction with StreamTransformation, these interface is TypeInformation and
they are more tied to physical format.
> Improve FlinkTypeFactory for Blink
> ----------------------------------
>
> Key: FLINK-11803
> URL: https://issues.apache.org/jira/browse/FLINK-11803
> Project: Flink
> Issue Type: New Feature
> Reporter: Jingsong Lee
> Assignee: Jingsong Lee
> Priority: Major
>
> We need change TypeInformation to InternalType.
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