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https://issues.apache.org/jira/browse/CALCITE-3151?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16874091#comment-16874091
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Vladimir Sitnikov commented on CALCITE-3151:
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I think this issue just duplicates CALCITE-2764 and CALCITE-2593.
[~docete], would you please try if https://github.com/apache/calcite/pull/989
solves your flink issue?
> RexCall's Monotonicity is not considered in determining a Calc's collation
> --------------------------------------------------------------------------
>
> Key: CALCITE-3151
> URL: https://issues.apache.org/jira/browse/CALCITE-3151
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.19.0
> Reporter: Zhenghua Gao
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> In [FLINK-12999|https://issues.apache.org/jira/browse/FLINK-12999] I found a
> case that the planner can't generate a valid execution plan for a sample
> query:
> SELECT UUID() FROM (VALUES(1, 2, 3)) T(a, b, c)
> I made an investigation and found the root case was: RexCall's Monotonicity
> is not considered in determining a Calc's collation( should do the same as
> Project).
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