Pajaraja opened a new pull request, #50957:
URL: https://github.com/apache/spark/pull/50957
### What changes were proposed in this pull request?
Enable deterministic queries to work with rCTEs. Fix bug where
non-deterministic queries produce same result every iteration.
### Why are the changes needed?
Currently, recursive CTEs create a new plan for each iteration of the
recursion, so the expressions that use randomness "roll-back" to their initial
value, causing things like "rand()" to produce the same result every time.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
New tests in golden files.
### Was this patch authored or co-authored using generative AI tooling?
No.
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