I vaguely remember that the Product Owner has to balance priorities, but I'm not convinced that limiting their authority is the main reason. Option D seems off to me.
The RETURNING clause can be a bit confusing, but I remember learning that it's useful for getting the values of columns affected by DML statements. I'll use that knowledge to try to eliminate the incorrect options.
Okay, let me think this through. We're creating two sets, one in ascending order and one in descending order, from the same vector. I'm guessing the output will reflect the order of the sets.
Von
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