jchen5 commented on PR #39375:
URL: https://github.com/apache/spark/pull/39375#issuecomment-1397459943
Definitely, I added some more tests. The is the set of factors I tested:
- Subquery type:
- Eligible for DecorrelateInnerQuery: Scalar, lateral join
- Not supported: EXISTS (new tests) and IN (existing tests)
- UNION inside (new tests) and outside (new+existing tests)
- Correlation in where, project, group by, aggregates, or no correlation
- Project, Aggregate, Window under the Union
- COUNT bug
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