I'm a little confused by this question. The options don't seem to match the wording of the question very well. But I think A. JOIN is the best answer based on my understanding of SQL.
Okay, let me think this through step-by-step. The question is asking which clause we use to combine rows from one table with rows in another table. That sounds like a JOIN operation, so I'm going to go with A. JOIN.
Hmm, I'm a bit unsure about this one. I know we use JOIN to combine tables, but I can't remember if that's the exact wording they're looking for. I'll have to think this through carefully.
I'm not sure about option D (a value containing the collection name). That doesn't seem like it would be a good partition key since the workload needs to be spread evenly.
Gary
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