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https://issues.apache.org/jira/browse/CALCITE-1523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15713502#comment-15713502
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Jess Balint commented on CALCITE-1523:
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I don't see anything preventing conflicting alias names. should this be
validated in the {{Frame}} constructor?
> Add RelBuilder field() method to reference aliased relations not on top of
> stack
> --------------------------------------------------------------------------------
>
> Key: CALCITE-1523
> URL: https://issues.apache.org/jira/browse/CALCITE-1523
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Jess Balint
> Assignee: Julian Hyde
> Priority: Minor
>
> It would be convenient to reference aliased tables that are not on top of the
> RelBuilder stack.
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