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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2021/01/26 09:32:43 UTC

[GitHub] [flink] lirui-apache commented on pull request #14336: [FLINK-20537][hive] Failed to call Hive UDF with string literal argum…

lirui-apache commented on pull request #14336:
URL: https://github.com/apache/flink/pull/14336#issuecomment-767419287


   @wuchong Thanks for your review. I've updated to address your comment.
   
   And after some more thoughts, I added logic in `HiveScalarFunction` to reuse previous argument types during type inference. `HiveScalarFunction` should only use `STRING` type for real literal arguments. However, calcite converts `CAST(literal)` to `literal` for RexNode, which means hive function cannot differentiate the two cases on RelNode level. So in that case, `HiveScalarFunction` should reuse the previous types and not force `STRING` type for literals.


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