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https://issues.apache.org/jira/browse/CALCITE-3524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17394272#comment-17394272
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Julian Hyde commented on CALCITE-3524:
--------------------------------------
If and when CALCITE-4719 is completed, we should add {{array}}, {{multiset}}
and {{map}} methods to {{RelBuilder}}, following the same pattern as for {{in}}
etc.
> Add methods to RelBuilder to create RexSubQuery
> -----------------------------------------------
>
> Key: CALCITE-3524
> URL: https://issues.apache.org/jira/browse/CALCITE-3524
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Amir Gajst
> Assignee: Julian Hyde
> Priority: Minor
> Labels: pull-request-available
> Fix For: 1.28.0
>
> Time Spent: 3.5h
> Remaining Estimate: 0h
>
> When building relational expressions, the simplest way is by using the
> RelBuilder which does not currently support creation of a RexSubQuery.
> We can add RexSubQuery creation functions to the RelBuilder to make it more
> "visible" and convenient to use.
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