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https://issues.apache.org/jira/browse/CALCITE-2506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16618112#comment-16618112
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Vladimir Sitnikov commented on CALCITE-2506:
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[~hyuan] you are hard-coding for unaryPlus case.
Would you please fix coalesce issue first?
> RexSimplify: coalesce(unaryPlus(nullInt), unaryPlus(vInt())) results in
> AssertionError: result mismatch
> -------------------------------------------------------------------------------------------------------
>
> Key: CALCITE-2506
> URL: https://issues.apache.org/jira/browse/CALCITE-2506
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.17.0
> Reporter: Vladimir Sitnikov
> Assignee: Julian Hyde
> Priority: Major
> Labels: newbie
>
> {{coalesce(unaryPlus(nullInt), unaryPlus(vInt()))}} results in
> {noformat}java.lang.AssertionError: result mismatch: when applied to
> {?0.int0=-1}, COALESCE(+(null), +(?0.int0)) yielded -1, and +(null) yielded
> NULL
> at org.apache.calcite.rex.RexSimplify.verify(RexSimplify.java:1162)
> at
> org.apache.calcite.rex.RexSimplify.simplify(RexSimplify.java:175){noformat}
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