jayzhan211 commented on code in PR #11797:
URL: https://github.com/apache/datafusion/pull/11797#discussion_r1706717034
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datafusion/expr/src/udf.rs:
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@@ -345,12 +351,22 @@ pub trait ScalarUDFImpl: Debug + Send + Sync {
fn name(&self) -> &str;
/// Returns the user-defined display name of the UDF given the arguments
- ///
fn display_name(&self, args: &[Expr]) -> Result<String> {
- let names: Vec<String> =
args.iter().map(create_name).collect::<Result<_>>()?;
+ let names: Vec<String> =
args.iter().map(ToString::to_string).collect();
+ // TODO: join with ", " to standardize the formatting of Vec<Expr>,
<https://github.com/apache/datafusion/issues/10364>
Ok(format!("{}({})", self.name(), names.join(",")))
}
+ /// Returns the user-defined schema name of the UDF given the arguments
Review Comment:
It seems I need another `SchemaFunctionDisplay` for replacing String with
impl Display in UDFImpl. I would like to hold on to the change for function
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