jayzhan211 commented on code in PR #10525:
URL: https://github.com/apache/datafusion/pull/10525#discussion_r1602371415
##########
datafusion/expr/src/function.rs:
##########
@@ -66,22 +69,39 @@ pub struct AccumulatorArgs<'a> {
///
/// If no `ORDER BY` is specified, `sort_exprs`` will be empty.
pub sort_exprs: &'a [Expr],
+
+ /// Whether the aggregate function is distinct.
+ pub is_distinct: bool,
+
+ /// The input type of the aggregate function.
+ pub input_type: &'a DataType,
+}
+
+/// [`GroupsAccumulatorSupportedArgs`] contains information to determine if an
+/// aggregate function supports the groups accumulator.
+pub struct GroupsAccumulatorSupportedArgs {
Review Comment:
We could do this.
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