Jefffrey commented on code in PR #24565:
URL: https://github.com/apache/datafusion/pull/24565#discussion_r3835064641
##########
datafusion/expr/src/type_coercion/functions.rs:
##########
@@ -1158,6 +1158,19 @@ fn coerced_from<'a>(
{
Some(type_into.clone())
}
+ // coerced run-end encoded the same way as dictionary: callers of a
+ // signature built from `Exact`/`OneOf` only know the logical value
+ // type, not that the argument happens to be physically run-encoded.
Review Comment:
```suggestion
```
probably not necessary to explain this
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