jayzhan211 commented on code in PR #13717:
URL: https://github.com/apache/datafusion/pull/13717#discussion_r1894002307
##########
datafusion/core/src/catalog_common/information_schema.rs:
##########
@@ -406,6 +406,7 @@ fn get_udf_args_and_return_types(
.into_iter()
.map(|arg_types| {
// only handle the function which implemented
[`ScalarUDFImpl::return_type`] method
+ #[allow(deprecated)]
Review Comment:
For example, if we have column `c`, we need `schema` to know it's data type
is `Int32`. With another `schema`, it may becomes `Int64`. How do we ensure the
schema is not changed and we can happily reuse the result we had before?
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