comphead commented on code in PR #16910:
URL: https://github.com/apache/datafusion/pull/16910#discussion_r2233109532
##########
datafusion/physical-expr/src/equivalence/class.rs:
##########
@@ -851,6 +851,26 @@ impl EquivalenceGroup {
.zip(right_children)
.all(|(left_child, right_child)| self.exprs_equal(left_child,
right_child))
}
+
+ /// Determine whether fields at indices `lhs` and `rhs` are equal.
+ pub fn fields_equal(&self, lhs: usize, rhs: usize) -> bool {
Review Comment:
I'm little bit struggling to understand what kind of indices are `lhs` and
`rhs`, this is a `pub` method, should we explain more in comments what those
indices are?
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