問題文
An engineer has one hour to reduce the load on a busy instance and opens the aggregated query list. Which column should the list be sorted by to find the best candidates for that hour?
選択肢
- The number of requests for each statement because that column shows which statement the applications issue the most times.
- The number of rows for each statement because that column shows which statement moves the largest volume of data through the engine.
- The average latency of each statement because that column shows which statement is the slowest for a single caller waiting on it.
- The total time that each statement spent running because that column shows where the capacity of the instance is actually being consumed.