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https://issues.apache.org/jira/browse/CALCITE-4912?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexander Trushev updated CALCITE-4912:
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Affects Version/s: 1.28.0
> Confusing javadoc of RexSimplify.simplify
> -----------------------------------------
>
> Key: CALCITE-4912
> URL: https://issues.apache.org/jira/browse/CALCITE-4912
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.28.0
> Reporter: Alexander Trushev
> Priority: Minor
>
> Javadoc of RexSimplify.simplify says that
> {code}
> simplify(x = 1 AND y = 2 AND NOT x = 1) returns y = 2
> {code}
> but it is wrong for any policy:
> x <- 1
> y <- 2
> x = 1 AND y = 2 AND NOT x = 1 == false
> y = 2 == true
> I guess it should have been like
> {code}
> simplify(y = 2 AND (x = 1 OR NOT x = 1 OR x IS NULL)) returns y = 2
> {code}
> which is true for any policy
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