[SPARK-51901] [SQL] Disallow generator functions in grouping sets #50698
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What changes were proposed in this pull request?
Currently following query throws an internal error:
I propose that we disallow generator functions in grouping sets and as a consequence throw a more user friendly one.
Why are the changes needed?
To improve error message.
Does this PR introduce any user-facing change?
No.
How was this patch tested?
Added tests.
Was this patch authored or co-authored using generative AI tooling?
No.