findepi commented on code in PR #17058:
URL: https://github.com/apache/datafusion/pull/17058#discussion_r2272648661
##########
datafusion/functions-aggregate/src/string_agg.rs:
##########
@@ -178,6 +178,10 @@ impl AggregateUDFImpl for StringAgg {
)))
}
+ fn reverse_expr(&self) -> datafusion_expr::ReversedUDAF {
Review Comment:
Can you please add this on `main` _**first**_?
This would make it impossible that anyone updating from 49.0.1 to a newer DF
version experiences a behavioral regression.
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