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https://issues.apache.org/jira/browse/CALCITE-6608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17887041#comment-17887041
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Stamatis Zampetakis commented on CALCITE-6608:
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I added an extra test in the PR to validate that {{SEARCH($0, Sarg[100])}} is
transformed to {{=($0, 100)}} by the simplifier and thus aligns with the new
behavior of {{RexBuilder#makeIn}} method.
> RexBuilder#makeIn should create EQUALS instead of SEARCH for single point
> values
> --------------------------------------------------------------------------------
>
> Key: CALCITE-6608
> URL: https://issues.apache.org/jira/browse/CALCITE-6608
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Stamatis Zampetakis
> Assignee: Stamatis Zampetakis
> Priority: Minor
>
> {code:java}
> RexBuilder.makeIn(inputRef(0), ImmutableList.of(literal(100)))
> {code}
> Current behavior:
> {noformat}
> SEARCH($0, Sarg[100])
> {noformat}
> Proposed behavior:
> {noformat}
> =($0, 100)
> {noformat}
> The EQUALS operator is simpler than the SEARCH operator and it is handled
> better by other components. Although, the SEARCH to EQUALS transformation is
> already something that is done during simplification not every piece of code
> calls the simplifier.
> This basic simplification could also be done directly inside the makeIn
> method when the caller passes a single point value.
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