Pavle Martinovic

### What changes were proposed in this pull request? Add a new rule to WidenSetOperationTypes to work for UnionLoop. ### Why are the changes needed? To have UNION ALL in...

[SQL][Minor] Disable Recursive CTE self-references from window functions

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### What changes were proposed in this pull request? Throw error when a UnionLoopRef is found inside a window function. ### Why are the changes needed? The context of a...

### What changes were proposed in this pull request? Modify ColumnPruning optimizer rule to successfully prune UnionLoops. For this, ColumnPruning had to migrated to inside the abstract Optimizer class. ###...

[SQL][MINOR] Defensive code for number of Partitions in rCTEs

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### What changes were proposed in this pull request? Set the number of partitions in recursive CTEs to be at least 1. ### Why are the changes needed? Defensive programming...