jayzhan211 commented on code in PR #9874:
URL: https://github.com/apache/arrow-datafusion/pull/9874#discussion_r1545704423
##########
datafusion/core/src/execution/context/mod.rs:
##########
@@ -1457,6 +1461,22 @@ impl SessionState {
datafusion_functions_array::register_all(&mut new_self)
.expect("can not register array expressions");
+ let first_value = create_first_value(
+ "FIRST_VALUE",
+ Signature::uniform(1, NUMERICS.to_vec(), Volatility::Immutable),
+ Arc::new(create_first_value_accumulator),
+ );
+
+ match new_self.register_udaf(Arc::new(first_value)) {
+ Ok(Some(existing_udaf)) => {
+ debug!("Overwrite existing UDF: {}", existing_udaf.name());
+ }
+ Ok(None) => {}
+ Err(err) => {
+ panic!("Failed to register UDF: {}", err);
Review Comment:
It is a large change to change this function to `Result<Self>`, so I keep it
panic for now
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