Github user NiharS commented on the issue:
https://github.com/apache/spark/pull/21807
New to SQL, but it seems like the query
`SELECT 1 LIMIT CAST('1' AS INT)`
should work, right? I tried both on Spark without to your change and the
W3Schools SQL tester and it's accepted in both, but I tried on your PR and it
hits the new AnalysisException.
If this is indeed an issue, it can be avoided by having the case be
`e.eval() == null` instead of `e.nullable`, although there's some duplicated
work since the previous case also calls `e.eval()`
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