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https://issues.apache.org/jira/browse/CALCITE-7687?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18114941#comment-18114941
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Etienne Pelissier commented on CALCITE-7687:
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I believe
[splitFilter|https://github.com/apache/calcite/blob/3b0444d98ab2708a4de503f63ea70006b7efeb58/core/src/main/java/org/apache/calcite/plan/RelOptUtil.java#L3189]'s
documentation is misleading because:
- _for each filter, if the filter only references the child inputs, then it can
be pushed_ implies that column-reference containment establishes semantic
pushability. That depends on the relational operator and its semantics (for
instance, in a non-simple aggregate); this method only checks containment.
> Aggregate selectivity estimation uses incorrect column references
> -----------------------------------------------------------------
>
> Key: CALCITE-7687
> URL: https://issues.apache.org/jira/browse/CALCITE-7687
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Etienne Pelissier
> Assignee: Etienne Pelissier
> Priority: Minor
> Labels: in-progress
>
> Predicate pushability is assessed without taking into account column
> remapping from the aggregate.
> Additionally, predicates are pushed without being rewritten as need be.
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