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Your organization is conducting analysis on regional sales metrics. Data from each regional sales team is stored as separate tables in BigQuery and updated monthly. You need to create a solution that identifies the top three regions with the highest monthly sales for the next three months. You want the solution to automatically provide up-to-date results. What should you do?
Correct Answer: C
Comprehensive and Detailed in Depth Explanation: Why C is correct:Materialized views in BigQuery are precomputed views that periodically cache the results of a query. This ensures up-to-date results automatically. A UNION is the correct operation to combine the data from multiple regional sales tables. RANK() function is correct to rank the sales regions. ROW_NUMBER() would create a unique number for each row, even if sales amount is the same, this is not the desired function. Why other options are incorrect:A and B: Standard tables do not provide automatic updates. D: A CROSS JOIN would produce a Cartesian product, which is not appropriate for combining regional sales data. Cross join is used when you want every combination of rows from tables, not a aggregation of data.