COF-C02 · Question #118
What is an advantage of using an explain plan instead of the query profiler to evaluate the performance of a query?
The correct answer is B. An explain plan can be used to conduct performance analysis without executing a query. An explain plan is beneficial because it allows for the evaluation of how a query will be processed without the need to actually execute the query. This can help in understanding the query's performance implications and potential bottlenecks without consuming resources that…
Question
What is an advantage of using an explain plan instead of the query profiler to evaluate the performance of a query?
Options
- AThe explain plan output is available graphically.
- BAn explain plan can be used to conduct performance analysis without executing a query.
- CAn explain plan will handle queries with temporary tables and the query profiler will not.
- DAn explain plan's output will display automatic data skew optimization information.
How the community answered
(30 responses)- A3% (1)
- B90% (27)
- D7% (2)
Explanation
An explain plan is beneficial because it allows for the evaluation of how a query will be processed without the need to actually execute the query. This can help in understanding the query's performance implications and potential bottlenecks without consuming resources that would be used if the query were run.
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