vvysotskyi opened a new pull request #1441: DRILL-6703: Query with complex expressions in lateral and unnest fails with CannotPlanException URL: https://github.com/apache/drill/pull/1441 Initially to handle unnest with complex calls was introduced `ProjectComplexRexNodeCorrelateTransposeRule`. But this rule only matched `LogicalCorrelate -> Uncollect -> LogicalProject` pattern. So all other combinations, which have `LogicalCorrelate`, `Uncollect` and `LogicalProject` with rel nodes between `LogicalCorrelate` and `Uncollect` weren't handled. The solution proposed in this PR is to make visitor based on `ProjectComplexRexNodeCorrelateTransposeRule` and apply it before applying rules, so all possible cases will be handled correctly. For details please see [DRILL-6703](https://issues.apache.org/jira/browse/DRILL-6703).
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