berkaysynnada commented on code in PR #14271:
URL: https://github.com/apache/datafusion/pull/14271#discussion_r1932018364
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datafusion/expr/src/udaf.rs:
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@@ -39,6 +39,26 @@ use crate::utils::AggregateOrderSensitivity;
use crate::{Accumulator, Expr};
use crate::{Documentation, Signature};
+/// Status of an Aggregate Expression's Monotonicity
+#[derive(Debug, Clone)]
+pub enum AggregateExprMonotonicity {
Review Comment:
The nulls property in SortProperties doesn't hold much significance here, as
it can be inferred from the monotonicity type. If the function exhibits an
increasing order as the set grows, the null values will naturally appear at the
end. Conversely, if the function is decreasing, the null values will appear at
the beginning.
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