LiaCastaneda commented on code in PR #18404:
URL: https://github.com/apache/datafusion/pull/18404#discussion_r2482379669
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datafusion/physical-plan/src/aggregates/mod.rs:
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@@ -1025,6 +1031,76 @@ impl ExecutionPlan for AggregateExec {
fn cardinality_effect(&self) -> CardinalityEffect {
CardinalityEffect::LowerEqual
}
+
Review Comment:
Good point, I noticed that `FilterExec` calls
[split_conjunction](https://github.com/apache/datafusion/blob/e65dafe7330f0324b28d9037f4e5a73cf12e99ce/datafusion/expr/src/utils.rs#L953)
which already does this work (for non dynamic filters). So, I think we should
do this mainly for dynamic filters rather than static filters because the
expression comes wrapped in a single physical expression with (potentially)
multiple columns depending on how many `on` key expresions there are, it looks
something like : `DynamicFilterPhysicalExpr([a, b])` <- we should split the
conjunctions for this expression too.
I can make this improvement in this same PR, to make the filter(s) pushdown
more granular.
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