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https://issues.apache.org/jira/browse/CALCITE-1794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17478163#comment-17478163
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Julian Hyde commented on CALCITE-1794:
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I have two concerns:
# we change the canonical order of Rex expressions (thereby introducing plan
diffs),
# we make the matching process significantly more expensive.
If we can accomplish this change without either of the above downsides I think
we should do it.
Is this case related to any other open cases? If so please add links.
> Simplify AND numeric comparisons when overlapping
> -------------------------------------------------
>
> Key: CALCITE-1794
> URL: https://issues.apache.org/jira/browse/CALCITE-1794
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Remus Rusanu
> Assignee: Haisheng Yuan
> Priority: Major
>
> Expressions such as {{$1<>1 and $1=2}} can be simplified to {{$1=2}}. Similar
> {{$1>10 AND $1>20}} can be simplified to {{$1>20}}. Such expressions are
> produced by the proposed solution for CALCITE-1790 (simplify boolean CASE to
> complex AND/OR).
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