[SPARK-50838][SQL] Add Cross Join as legal in recursion of Recursive CTE #50308
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What changes were proposed in this pull request?
Add Cross Joins as legal in recursion in Recursive CTEs.
Why are the changes needed?
Cross join is allowed in the recursion plan of Recursive CTEs in postgreSQL.
Does this PR introduce any user-facing change?
No.
How was this patch tested?
Will be tested in 49955.
Was this patch authored or co-authored using generative AI tooling?
No.