Administering Microsoft SQL Server 2012/2014 Databases — Question 7

You are developing a database application by using Microsoft SQL Server 2012. You have a query that runs slower than expected.
You need to capture execution plans that will include detailed information on missing indexes recommended by the query optimizer.
What should you do?

Answer options

• A. Add a HASH hint to the query.
• B. Add a LOOP hint to the query.
• C. Add a FORCESEEK hint to the query.
• D. Add an INCLUDE clause to the index.
• E. Add a FORCESCAN hint to the Attach query.
• F. Add a columnstore index to cover the query.
• G. Enable the optimize for ad hoc workloads option.
• H. Cover the unique clustered index with a columnstore index.
• I. Include a SET FORCEPLAN ON statement before you run the query.
• J. Include a SET STATISTICS PROFILE ON statement before you run the query. K. Include a SET STATISTICS SHOWPLAN_XML ON statement before you run the query. L. Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query. M. Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query. N. Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query. K

Correct answer:

Explanation

The correct answer is K, as including a SET STATISTICS SHOWPLAN_XML ON statement will allow you to retrieve the execution plans in XML format, which includes detailed information on missing indexes recommended by the query optimizer. The other options either relate to query hints or transaction isolation levels, which do not provide execution plan details.