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You're falling into the trap of thinking like the developer looking at the implementation, not the end user. The goal is:

>In order to audit inventory, the logistics team at the corporate headquarters requests a tool that can generate a report containing all meal_items that left a given store’s inventory on a particular day

That's one thing. The end user doesn't see these as two separate requests just because that's how it's modeled in the database.



The end user here being the person writing the union SQL query?




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