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https://issues.apache.org/jira/browse/CALCITE-1584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16030084#comment-16030084
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Julian Hyde commented on CALCITE-1584:
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By "type" I do not mean "row type" (i.e. the names and types of the fields in
the records returned by a relational expression, {{r.getRowType()}}) I mean the
Java class of the RelNode ({{r.getClass()}}). Was this the source of the
confusion?
> ProjectRemoveRule loses field names
> -----------------------------------
>
> Key: CALCITE-1584
> URL: https://issues.apache.org/jira/browse/CALCITE-1584
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Jess Balint
> Assignee: Julian Hyde
> Priority: Minor
>
> the rule doesn't properly identify a child {{Project}} node
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