findepi commented on code in PR #16842:
URL: https://github.com/apache/datafusion/pull/16842#discussion_r2231669050
##########
datafusion/expr/src/utils.rs:
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@@ -1260,6 +1261,42 @@ pub fn collect_subquery_cols(
})
}
+/// Generates implementation of `equals` and `hash_value` methods for a trait,
delegating
+/// to PartialEq and Hash implementations on Self.
+/// Meant to be used with traits representing user-defined functions (UDFs).
+#[macro_export]
+macro_rules! udf_equals_hash {
Review Comment:
added example usage & tests
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