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https://issues.apache.org/jira/browse/CALCITE-6056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17776659#comment-17776659
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LakeShen commented on CALCITE-6056:
-----------------------------------
In calcite,The Window function would use RexOver to represent,and it is a
RexNode in LogicalProject's exps.
So the window's column pruning logic is in 'RelFieldTrimmer#trimFields(Project,
ImmutableBitSet, Set<RelDataTypeField>)' method.
> Add the Window column pruning in RelFieldTrimmer
> ------------------------------------------------
>
> Key: CALCITE-6056
> URL: https://issues.apache.org/jira/browse/CALCITE-6056
> Project: Calcite
> Issue Type: Improvement
> Reporter: LakeShen
> Priority: Major
>
> Now in
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