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https://issues.apache.org/jira/browse/CALCITE-3842?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17052406#comment-17052406
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Julian Hyde commented on CALCITE-3842:
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The summary isn't very helpful. The "bug" is that RexSimplify doesn't simplify
range predicates. The (possible) cause is that RexSimplify looks at the
operands in a particular order.
Please improve the summary.
> Simplification of OR condition is based on order of operands.
> -------------------------------------------------------------
>
> Key: CALCITE-3842
> URL: https://issues.apache.org/jira/browse/CALCITE-3842
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: anjali shrishrimal
> Priority: Major
>
> RexSimplify simplifies :
> {noformat}
> (a <= 10) OR (a <= 1) --> a <= 10{noformat}
> but does not simplify
> {noformat}
> (a <= 1) OR (a <= 10) {noformat}
>
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