cloud-fan commented on PR #58656:
URL: https://github.com/apache/spark/pull/58656#issuecomment-6391596365
Thanks, I checked 289efbb46d9. An uncorrelated carried IN with an observable
unknown is now rejected with NESTED_IN_SUBQUERY_WITH_UNKNOWN_RESULT under both
settings, the two carried rejections raise their own conditions, the new tests
cover the Filter-predicate, projection and join-condition routes, and the NOT
IN residual cases now discriminate. A carried NOT IN takes the null-aware arm
on the reported shape, but not when the same IN sub-query is also carried bare;
that is in a new comment on rewriteCarriedExistentialExprs in
optimizer/subquery.scala. Also still open from that round: the NOT IN arm's
comment there still says keeping the residual is correct and treats a wrapped
anti join as hypothetical, and only the test comment was reworded.
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