You use Microsoft SQL Server 2012 database to develop a shopping cart application. You need to rotate the
unique values of the ProductName field of a table-valued expression into multiple columns in the output. Which
Transact-SQL operator should you use?

You administer a Microsoft SQL Server database thatsupports a shopping application. You need to retrieve a
list of customers who live in territories that do not have a sales person. Which Transact- SQL query or queries
should you use? (Each correct answer presents a complete solution. Choose all that apply.)

Your database contains a table named SalesOrders. The table includes a DATETIME column named
OrderTime that stores the date and time each order is placed. There is a non-clustered index on the OrderTime
column. The business team wants a report that displays the total number of orders placed on the current day.
You need to write a query that will return the correct results in the most efficient manner. Which Transact-SQL
query should you use?

Your application contains a stored procedure for each country. Each stored procedure accepts an employee
identification number through the @EmpID parameter.You plan to build a single process for each employee
that will execute the stored procedure based on thecountry of residence. Which approach should you use?

You use Microsoft SQL Server 2012 to develop a database application. You create a stored procedure named
dbo.ModifyData that can modify rows. You need to ensure that when the transaction fails, dbo.ModifyData
meets the following requirements:
Does not return an error
Closes all opened transactions
Which Transact-SQL statement should you use?

You are developing a database application by using Microsoft SQL Server 2012. An application that usesa
database begins to run slowly. You discover that during reads, the transaction experiences blocking from
concurrent updates. You need to ensure that throughout the transaction the data maintains the originalversion.
What should you do?

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 executionplans that will include detailed information on missing
indexes recommended by the query optimizer. What should you do?

You are developing a database application by using Microsoft SQL Server 2012. An application that usesa
database begins to run slowly. You discover that a large amount of memory is consumed by single-use
dynamic queries. You need to reduce procedure cacheusage from these statements without creating any
additional indexes. What should you do?

You are developing a database application by using Microsoft SQL Server 2012. An application that usesa
database begins to run slowly. Your investigation shows the root cause is a query against a read-only table that
has a clustered index. The query returns the following six columns:
One column in its WHERE clause contained in a non-clustered index Four additional columns
One COUNT (*) column based on a grouping of the four additional columns You need to optimize the
statement.
What should you do?

You administer a Microsoft SQL Server 2012 databasenamed ContosoDb. Tables are defined as shown in the
exhibit. (Refer to the Exhibit.)

You need to display rows from the Orders table for the Customers row having the CustomerId value set to 1 in
the following XML format.

Which Transact-SQL query should you use?