twalthr commented on issue #9780: [FLINK-14042] [flink-table-planner] Fix 
TemporalTable row schema always inferred as nullable
URL: https://github.com/apache/flink/pull/9780#issuecomment-544514844
 
 
   Your findings are correct @YuvalItzchakov. It is another issue that shows 
that FLIP-37 and FLIP-65 are important. Luckily, the new Blink planner will not 
have these problems anymore as it deeply integrated the new logical types with 
proper nullability. I have a working solution that could solve this use case in 
particular:
   
   
https://github.com/apache/flink/compare/master...twalthr:FLINK-14042?expand=1.
   
   We could merge this as a temporary solution. Of course it does not solve 
further use cases with other types. But FLIP-65 might solve this issue on the 
way for the next release.

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