Re: [PR] fix(lambda): only push referenced params into the merged batch [datafusion]

Tue, 11 Aug 2026 10:07:35 -0700 


LiaCastaneda commented on code in PR #24162:
URL: https://github.com/apache/datafusion/pull/24162#discussion_r3759804228


##########
datafusion/expr/src/higher_order_function.rs:
##########
@@ -261,22 +274,27 @@ impl LambdaArgument {
         params: Vec<FieldRef>,
         body: Arc<dyn PhysicalExpr>,
         captures: Option<RecordBatch>,
+        used_param_indices: &[usize],
     ) -> Self {
-        let fields = match &captures {
+        let used_param_indices = used_param_indices.to_vec();
+        let effective_params = used_param_indices.iter().map(|i| 
Arc::clone(&params[*i]));

Review Comment:
   make sense, done.



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