jayzhan211 commented on code in PR #13372:
URL: https://github.com/apache/datafusion/pull/13372#discussion_r1879199704
##########
datafusion/expr-common/src/signature.rs:
##########
@@ -138,6 +141,48 @@ pub enum TypeSignature {
NullAry,
}
+impl TypeSignature {
+ #[inline]
+ pub fn is_one_of(&self) -> bool {
+ matches!(self, TypeSignature::OneOf(_))
+ }
+}
+
+#[derive(Debug, Clone, Eq, PartialOrd)]
+pub enum TypeSignatureClass {
+ Timestamp,
Review Comment:
How about managing timestamps within the invoke function? Handling specific
cases like Timestamp_with_time_zone or TIMEZONE_WILDCARD adds unnecessary
complexity to the function's signature without providing much benefit. Instead,
why not define a high-level Timestamp in the signature and handle the finer
details elsewhere?
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