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Note: This question is part of series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution. After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen. You have a table named Table1 that contains 3 billion rows. Table1 contains data from the last 36 months. At the end of every month, the oldest month of data is removed based on a column named DateTime. You need to minimize how long it takes to remove the oldest month of data. Solution: You specify DateTime as the hash distribution column. Does this meet the goal?
Correct Answer: B
Explanation/Reference: Explanation: A hash-distributed table distributes table rows across the Compute nodes by using a deterministic hash function to assign each row to one distribution. Since identical values always hash to the same distribution, the data warehouse has built-in knowledge of the row locations. SQL Data Warehouse uses this knowledge to minimize data movement during queries, which improves query performance. Note: A distributed table appears as a single table, but the rows are actually stored across 60 distributions. The rows are distributed with a hash or round-robin algorithm. References: https://docs.microsoft.com/en-us/azure/sql-data-warehouse/sql-data-warehouse-tables- distribute