findepi commented on PR #12864:
URL: https://github.com/apache/datafusion/pull/12864#issuecomment-2437234664
> It seems the query is accidentally correct in before this change, because
we don't know the result of the function when we build up Values plan.
Values plan is build for `VALUES ('abcd')` part of the query. The type is
known to be Utf8.
The the surrounding query is planned, the `length(Utf8)` function is known
to return the length as a number.
What was accidental about this?
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