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https://issues.apache.org/jira/browse/CALCITE-6746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-6746:
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Labels: pull-request-available (was: )
> Optimization rule ProjectWindowTranspose is unsound
> ---------------------------------------------------
>
> Key: CALCITE-6746
> URL: https://issues.apache.org/jira/browse/CALCITE-6746
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.38.0
> Reporter: Mihai Budiu
> Assignee: Mihai Budiu
> Priority: Minor
> Labels: pull-request-available
>
> Here is an an example plan before and after this rule:
> {code}
> LogicalProject(EXPR$0=[CASE(>($3, 0), $4, null:INTEGER)], salary=[$0],
> enroll_date=[$1]), id = 630
> LogicalWindow(window#0=[window(order by [1] range between $2 PRECEDING
> and $2 FOLLOWING aggs [COUNT($0), $SUM0($0)])]), id = 628
> LogicalProject(salary=[$2], enroll_date=[$3], $2=[*(365,
> 86400000:INTERVAL DAY)]), id = 626
> LogicalTableScan(table=[[schema, empsalary]]), id = 592
> {code}
> after:
> {code}
> LogicalProject(EXPR$0=[CASE(>($2, 0), $3, null:INTEGER)], salary=[$0],
> enroll_date=[$1]), id = 645
> LogicalWindow(window#0=[window(order by [1] range between $2 PRECEDING
> and $2 FOLLOWING aggs [COUNT($0), $SUM0($0)])]), id = 643
> LogicalProject(salary=[$0], enroll_date=[$1]), id = 639
> LogicalProject(salary=[$2], enroll_date=[$3], $2=[*(365,
> 86400000:INTERVAL DAY)]), id = 633
> LogicalTableScan(table=[[schema, empsalary]]), id = 592
> {code}
> The problem is the representation of the window bound, which refers to field
> $2. After this optimization this field no longer exists in the project that
> is an input to the Window.
> I suspect that the problem is in the code ProjectWindowTransposeRule that
> maintains the beReferred bitset; it never adds the window bounds to this set.
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