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https://issues.apache.org/jira/browse/CALCITE-6989?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stamatis Zampetakis reassigned CALCITE-6989:
--------------------------------------------
Assignee: Stamatis Zampetakis
> Enhance RexBuilder#makeIn to create SEARCH for ARRAY literals
> -------------------------------------------------------------
>
> Key: CALCITE-6989
> URL: https://issues.apache.org/jira/browse/CALCITE-6989
> Project: Calcite
> Issue Type: Improvement
> Reporter: Stamatis Zampetakis
> Assignee: Stamatis Zampetakis
> Priority: Major
>
> Currently
> [RexBuilder#makeIn|https://github.com/apache/calcite/blob/e9db5bdb7c78cdbbed5bb7917b62a53b6450aa40/core/src/main/java/org/apache/calcite/rex/RexBuilder.java#L1787]
> method creates an OR expression when the input ranges are ARRAY literals.
> Ideally, we should handle ARRAY literals in the same way that we handle ROW
> literals and create a SEARCH expression that is a more powerful abstraction.
> +Example+
> {noformat}
> RexBuilder#makeIn($0, ARRAY [100, 200], ARRAY [300, 400])
> {noformat}
> +Before+
> {noformat}
> OR(=($0, ARRAY(100, 200)), =($0, ARRAY(300, 400)))
> {noformat}
> +After+
> {noformat}
> SEARCH($0, Sarg[[100:INTEGER, 200:INTEGER]:INTEGER NOT NULL ARRAY,
> [300:INTEGER, 400:INTEGER]:INTEGER NOT NULL ARRAY]:INTEGER NOT NULL ARRAY)
> {noformat}
> Subsequently we can take advantage of the SEARCH operator for more powerful
> simplifications (RexSimplify) and/or generating IN clauses when we go from
> RelNode back to SQL (RelToSqlConverter).
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