From cbd44a11b15c33b2a31fd8df7729db1c598bfea2 Mon Sep 17 00:00:00 2001
From: Richard Chien <stdrc@outlook.com>
Date: Mon, 11 Nov 2024 17:50:20 +0800
Subject: [PATCH] simplify

Signed-off-by: Richard Chien <stdrc@outlook.com>
---
 src/expr/impl/src/aggregate/first_last_value.rs | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/src/expr/impl/src/aggregate/first_last_value.rs b/src/expr/impl/src/aggregate/first_last_value.rs
index e4577361c6089..841442148f722 100644
--- a/src/expr/impl/src/aggregate/first_last_value.rs
+++ b/src/expr/impl/src/aggregate/first_last_value.rs
@@ -41,15 +41,9 @@ fn first_value(state: &mut FirstValueState, input: Option<ScalarRefImpl<'_>>) {
     }
 }
 
-#[derive(Debug, Clone, Default)]
+#[derive(Debug, Clone, Default, EstimateSize)]
 struct FirstValueState(Option<Datum>);
 
-impl EstimateSize for FirstValueState {
-    fn estimated_heap_size(&self) -> usize {
-        self.0.estimated_heap_size()
-    }
-}
-
 impl AggStateDyn for FirstValueState {}
 
 impl From<&FirstValueState> for Datum {