andygrove commented on code in PR #14279:
URL: https://github.com/apache/datafusion/pull/14279#discussion_r1937577475
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datafusion/physical-expr/src/analysis.rs:
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@@ -81,8 +81,12 @@ impl AnalysisContext {
#[derive(Clone, Debug, PartialEq)]
pub struct ExprBoundaries {
pub column: Column,
- /// Minimum and maximum values this expression can have.
- pub interval: Interval,
+ /// Minimum and maximum values this expression can have. A `None` value
+ /// indicates that evaluating the given column results in an empty set.
+ /// For example, if the column `a` has values in the range [10, 20],
+ /// and there is a filter asserting that `a > 50`, then the resulting
interval
+ /// range of `a` will be `None`.
+ pub interval: Option<Interval>,
Review Comment:
I added the `api-change` label due to making `interval` an `Option`.
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