diff --git a/src/query/src/optimizer.rs b/src/query/src/optimizer.rs
index d31b01d98442..e6a971417c23 100644
--- a/src/query/src/optimizer.rs
+++ b/src/query/src/optimizer.rs
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-pub mod magic;
+pub mod count_wildcard;
 pub mod order_hint;
 pub mod remove_duplicate;
 pub mod string_normalization;
diff --git a/src/query/src/optimizer/magic.rs b/src/query/src/optimizer/count_wildcard.rs
similarity index 97%
rename from src/query/src/optimizer/magic.rs
rename to src/query/src/optimizer/count_wildcard.rs
index ac0662151b2b..359d333c25c1 100644
--- a/src/query/src/optimizer/magic.rs
+++ b/src/query/src/optimizer/count_wildcard.rs
@@ -60,13 +60,13 @@ impl CountWildcardToTimeIndexRule {
                 Expr::WindowFunction(mut window_function)
                     if Self::is_count_star_window_aggregate(&window_function) =>
                 {
-                    window_function.args = new_arg.clone();
+                    window_function.args.clone_from(&new_arg);
                     Ok(Transformed::yes(Expr::WindowFunction(window_function)))
                 }
                 Expr::AggregateFunction(mut aggregate_function)
                     if Self::is_count_star_aggregate(&aggregate_function) =>
                 {
-                    aggregate_function.args = new_arg.clone();
+                    aggregate_function.args.clone_from(&new_arg);
                     Ok(Transformed::yes(Expr::AggregateFunction(
                         aggregate_function,
                     )))
diff --git a/src/query/src/query_engine/state.rs b/src/query/src/query_engine/state.rs
index 5c7decde9060..3fa44a280617 100644
--- a/src/query/src/query_engine/state.rs
+++ b/src/query/src/query_engine/state.rs
@@ -43,7 +43,7 @@ use table::table::adapter::DfTableProviderAdapter;
 use table::TableRef;
 
 use crate::dist_plan::{DistExtensionPlanner, DistPlannerAnalyzer};
-use crate::optimizer::magic::CountWildcardToTimeIndexRule;
+use crate::optimizer::count_wildcard::CountWildcardToTimeIndexRule;
 use crate::optimizer::order_hint::OrderHintRule;
 use crate::optimizer::remove_duplicate::RemoveDuplicate;
 use crate::optimizer::string_normalization::StringNormalizationRule;