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https://issues.apache.org/jira/browse/CALCITE-2555?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16617194#comment-16617194
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Zoltan Haindrich commented on CALCITE-2555:
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[~vladimirsitnikov] 'while I am not quite sure which case would trigger
"exponential" behavior'
you haven't checked that the issue exists or not...never reproduced the
original issue; but run "some guesses" and reported that you don't know if its
there? how did you know that you run the "right checks" if you haven't
reproduced the original issue?
> RexSimplify: >=(true, null) could be simplified to null
> -------------------------------------------------------
>
> Key: CALCITE-2555
> URL: https://issues.apache.org/jira/browse/CALCITE-2555
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.17.0
> Reporter: Vladimir Sitnikov
> Assignee: Julian Hyde
> Priority: Major
> Labels: newbie
>
> {code:java}
> @Test public void simplifyComparisonWithNull() {
> checkSimplify2(ge(trueLiteral, falseLiteral), "true", "true");
> checkSimplify2(ge(trueLiteral, nullBool), "null", "false");
> checkSimplify2(ge(nullBool, nullBool), "null", "false");
> }
> {code}
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