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https://issues.apache.org/jira/browse/CALCITE-2964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16806398#comment-16806398
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Haisheng Yuan commented on CALCITE-2964:
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Looks like we just need to add ValuesReduceRule.FILTER_INSTANCE to
testEmptyFilterProjectUnion. So this is not a bug, I will close this issue.
Feel free to reopen it if you don't think so.
> testEmptyFilterProjectUnion fails when copyPorject is disabled in
> FilterProjectTransposeRule
> --------------------------------------------------------------------------------------------
>
> Key: CALCITE-2964
> URL: https://issues.apache.org/jira/browse/CALCITE-2964
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Haisheng Yuan
> Priority: Major
>
> Changing
> {code:java}
> public static final FilterProjectTransposeRule INSTANCE =
> new FilterProjectTransposeRule(Filter.class, Project.class, true, true,
> RelFactories.LOGICAL_BUILDER);
> {code}
> to
> {code:java}
> public static final FilterProjectTransposeRule INSTANCE =
> new FilterProjectTransposeRule(Filter.class, Project.class, true, false,
> RelFactories.LOGICAL_BUILDER);
> {code}
> will cause testEmptyFilterProjectUnion plan diff:
> {code:java}
> LogicalProject(X=[$0], Y=[$1])
> LogicalUnion(all=[true])
> LogicalFilter(condition=[>(+($0, $1), 30)])
> LogicalValues(tuples=[[{ 10, 1 }, { 30, 3 }]])
> LogicalFilter(condition=[>(+($0, $1), 30)])
> LogicalValues(tuples=[[{ 20, 2 }]])
> {code}
> The expected plan is:
> {code:java}
> LogicalProject(X=[$0], Y=[$1])
> LogicalValues(tuples=[[{ 30, 3 }]])
> {code}
> I am assuming it will generate the same plan no matter copyFilter/copyProject
> is on or off. Is this wrong assumption?
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