ngli-me commented on code in PR #12421:
URL: https://github.com/apache/datafusion/pull/12421#discussion_r1755878706


##########
datafusion/expr-common/src/signature.rs:
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@@ -127,7 +129,62 @@ pub enum TypeSignature {
     Numeric(usize),
 }
 
-#[derive(Debug, Clone, PartialEq, Eq, Hash)]
+// manual implementation of `PartialOrd`

Review Comment:
   Ah, for some reason I thought that derives wouldn't work with an enum with 
differing types, but I see it does work with the tests. Added an additional 
sanity assertion just to check, and removed the manual implementation for 
TypeSignature, thanks!



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