alamb commented on code in PR #21651:
URL: https://github.com/apache/datafusion/pull/21651#discussion_r3148450013
##########
datafusion/physical-expr/src/projection.rs:
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@@ -726,6 +729,100 @@ impl ProjectionExprs {
}
}
+/// Propagate min/max statistics through an expression using
+/// [`PhysicalExpr::evaluate_bounds`]. Works for any expression that
+/// implements `evaluate_bounds` (CAST, negation, arithmetic with literals,
etc.).
+///
+/// Only applied when the expression references a single column at most once in
Review Comment:
Here is the docs PR:
- https://github.com/apache/datafusion/pull/21879
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