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### What changes were proposed in this pull request? This is a followup of #23388 . #23388 has an issue: it doesn't handle subquery expressions and assumes they will be turned into joins. However, this is not true for non-correlated subquery expressions. This PR fixes this issue. It now doesn't skip `Subquery`, and subquery expressions will be handled by `OptimizeSubqueries`, which runs the optimizer with the subquery. Note that, correlated subquery expressions will be handled twice: once in `OptimizeSubqueries`, once later when it becomes join. This is OK as `NormalizeFloatingNumbers` is idempotent now. ### Why are the changes needed? fix a bug ### Does this PR introduce _any_ user-facing change? yes, see the newly added test. ### How was this patch tested? new test Closes #28785 from cloud-fan/normalize. Authored-by: Wenchen Fan <wenchen@databricks.com> Signed-off-by: Wenchen Fan <wenchen@databricks.com>
### What changes were proposed in this pull request? remove duplicate test cases ### Why are the changes needed? improve test quality ### Does this PR introduce _any_ user-facing change? NO ### How was this patch tested? No test Closes #28782 from GuoPhilipse/31954-delete-duplicate-testcase. Lead-authored-by: GuoPhilipse <46367746+GuoPhilipse@users.noreply.github.com> Co-authored-by: GuoPhilipse <guofei_ok@126.com> Signed-off-by: HyukjinKwon <gurwls223@apache.org>
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