Hi Anton,

I would open an issue and PR at Calcite. Until this issue is fixed, I would either copy or even better wrap the Calcite rule into a Flink specific rule that uses the correct representation of null.

Regards,
Timo

Am 01/12/16 um 12:19 schrieb Anton Mushin:
Hi everybody,
In issue FLINK-4604 we  got the problem [1].

Do have somebody idea how can resolve this problem?


[1] 
https://issues.apache.org/jira/browse/FLINK-4604?focusedCommentId=15667697&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15667697

Best regards,
Anton Mushin

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