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Querying Microsoft SQL Server 2012

Question No: 11

You develop a database for a travel application. You need to design tables and other database objects.

You create a view that displays the dates and times of the airline schedules on a report. You need to display dates and times in several international formats.

What should you do?

  1. Use the CAST function.

  2. Use the DATE data type.

  3. Use the FORMAT function.

  4. Use an appropriate collation.

  5. Use a user-defined table type.

  6. Use the VARBINARY data type.

  7. Use the DATETIME data type.

  8. Use the DATETIME2 data type.

  9. Use the DATETIMEOFFSET data type.

  10. Use the TODATETIMEOFFSET function.

Answer: C

Reference: http://msdn.microsoft.com/en-us/library/hh213505.aspx

Question No: 12

Your database contains a table named Customer that has columns named CustomerID and Name.

You want to write a query that retrieves data from the Customer table sorted by Name listing 20 rows at a time.

You need to view rows 41 through 60.

Which Transact-SQL query should you create?

image

  1. Option A

  2. Option B

  3. Option C

  4. Option D

Answer: B

Question No: 13

You are developing a database that will contain price information.

You need to store the prices that include a fixed precision and a scale of six digits. Which data type should you use?

  1. Float

  2. Money

  3. Smallmoney

  4. Numeric

Answer: D Explanation:

Numeric is the only one in the list that can give a fixed precision and scale. Reference: http://msdn.microsoft.com/en-us/library/ms179882.aspx

Question No: 14

Your database contains tables named Products and ProductsPriceLog. The Products table contains columns named ProductCode and Price. The ProductsPriceLog table contains columns named ProductCode, OldPrice, and NewPrice.

The ProductsPriceLog table stores the previous price in the OldPrice column and the new price in the NewPrice column.

You need to increase the values in the Price column of all products in the Products table by 5 percent. You also need to log the changes to the ProductsPriceLog table.

Which Transact-SQL query should you use?

  1. UPDATE Products SET Price = Price * 1.05

    OUTPUT inserted.ProductCode, deleted.Price, inserted.Price INTO ProductsPriceLog(ProductCode, OldPrice, NewPrice)

  2. UPDATE Products SET Price = Price * 1.05

    OUTPUT inserted.ProductCode, inserted.Price, deleted.Price INTO ProductsPriceLog(ProductCode, OldPrice, NewPrice)

  3. UPDATE Products SET Price = Price * 1.05

    OUTPUT inserted.ProductCode, deleted.Price, inserted.Price * 1.05 INTO ProductsPriceLog(ProductCode, OldPrice, NewPrice)

  4. UPDATE Products SET Price = Price * 1.05

INSERT INTO ProductsPriceLog(ProductCode, OldPrice, NewPrice) SELECT ProductCode, Price, Price * 1.05 FROM Products

Answer: A

Reference: http://msdn.microsoft.com/en-us/library/ms177564.aspx

Question No: 15

You use a Microsoft SQL Server 2012 database that contains a table named BlogEntry that has the following columns:

image

Id is the Primary Key.

You need to append the quot;This is in a draft stagequot; string to the Summary column of the recent 10 entries based on the values in EntryDateTime.

Which Transact-SQL statement should you use?

  1. UPDATE TOP(10) BlogEntry

    SET Summary.WRITE(N#39; This is in a draft stage#39;, NULL, 0)

  2. UPDATE BlogEntry

    SET Summary = CAST(N#39; This is in a draft stage#39; as nvarchar(max))

    WHERE Id IN(SELECT TOP(10) Id FROM BlogEntry ORDER BY EntryDateTime DESC)

  3. UPDATE BlogEntry

    SET Summary.WRITE(N#39; This is in a draft stage#39;, NULL, 0) FROM (

    SELECT TOP(10) Id FROM BlogEntry ORDER BY EntryDateTime DESC) AS s WHERE BlogEntry.Id = s.ID

  4. UPDATE BlogEntry

SET Summary.WRITE(N#39; This is in a draft stage#39;, 0, 0)

WHERE Id IN(SELECT TOP(10) Id FROM BlogEntry ORDER BY EntryDateTime DESC)

Answer: C

Question No: 16 CORRECT TEXT

You have a database that contains the tables shown in the exhibit. (Click the Exhibit button).

image

You need to create a query for a report. The query must meet the following requirements:

-> NOT use object delimiters.

-> Return the most recent orders first.

-> Use the first initial of the table as an alias.

-> Return the most recent order date for each customer.

-> Retrieve the last name of the person who placed the order.

-> Return the order date in a column named MostRecentOrderDate that appears as

the last column in the report.

The solution must support the ANSI SQL-99 standard.

Which code segment should you use?

To answer, type the correct code in the answer area.

Answer: Please review the explanation part for this answer

Explanation:

SELECT C.LastName, MAX(O.OrderDate) AS MostRecentOrderDate FROM Customers AS C INNER JOIN Orders AS O

ON C.CustomerID = O.CustomerID GROUP BY C.LastName

ORDER BY MostRecentOrderDate DESC

Question No: 17

You administer a Microsoft SQL Server 2012 database. The database contains a table named Employee. Part of the Employee table is shown in the exhibit. (Click the Exhibit button.)

image

image

Unless stated above, no columns in the Employee table reference other tables.

Confidential information about the employees is stored in a separate table named EmployeeData. One record exists within EmployeeData for each record in the Employee table.

You need to assign the appropriate constraints and table properties to ensure data integrity and visibility.

On which column in the Employee table should you use an identity specification to include a seed of 1,000 and an increment of 1?

  1. DateHired

  2. DepartmentID

  3. EmployeeID

  4. EmployeeNum

  5. FirstName

  6. JobTitle

  7. LastName

  8. MiddleName

  9. ReportsToID

Answer: C

Question No: 18

You are developing a database application by using Microsoft SQL Server 2012. An application that uses a database begins to run slowly.

You discover that the root cause is a query against a frequently updated table that has a clustered index. The query returns four columns: three columns in its WHERE clause contained in a non-clustered index and one additional column.

You need to optimize the statement. What should you do?

  1. Add a HASH hint to the query.

  2. Add a LOOP hint to the query.

  3. Add a FORCESEEK hint to the query.

  4. Add an INCLUDE clause to the index.

  5. Add a FORCESCAN hint to the Attach query.

  6. Add a columnstore index to cover the query.

  7. Enable the optimize for ad hoc workloads option.

  8. Cover the unique clustered index with a columnstore index.

  9. Include a SET FORCEPLAN ON statement before you run the query.

  10. Include a SET STATISTICS PROFILE ON statement before you run the query.

  11. Include a SET STATISTICS SHOWPLAN_XML ON statement before you run the query.

  12. Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query.

  13. Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query.

  14. Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query.

Answer: C

Question No: 19

You are developing a Microsoft SQL Server 2012 database for a company. The database contains a table that is defined by the following Transact-SQL statement:

image

You use the following Transact-SQL script to insert new employee data into the table. Line numbers are included for reference only.

image

If an error occurs, you must report the error message and line number at which the error

occurred and continue processing errors.

You need to complete the Transact-SQL script.

Which Transact-SQL segment should you insert at line 06?

  1. SELECT ERROR_LINE(), ERROR_MESSAGE()

  2. DECLARE @message NVARCHAR(1000),@severity INT, @state INT;

    SELECT @message = ERROR_MESSAGE(), @severity = ERROR_SEVERITY(), @state

    = ERROR_STATE();

    RAISERROR (@message, @severity, @state);

  3. C. DECLARE @message NVARCHAR(1000),@severity INT, @state INT;

    SELECT @message = ERROR_MESSAGE(), @severity = ERROR_SEVERITY(), @state

    = ERROR_STATE();

    THROW (@message, @severity, @state);

  4. THROW;

Answer: B

Explanation: When the code in the CATCH block finishes, control passes to the statement immediately after the END CATCH statement. Errors trapped by a CATCH block are not returned to the calling application. If any part of the error information must be returned to the application, the code in the CATCH block must do so by using mechanisms such as SELECT result sets or the RAISERROR and PRINT statements.

Reference: TRY…CATCH (Transact-SQL) https://msdn.microsoft.com/en-us/library/ms175976.aspx

Question No: 20 DRAG DROP

You use a Microsoft SQL Server 2012 database.

You need to create an indexed view within the database for a report that displays Customer Name and the total revenue for that customer.

Which four T-SQL statements should you use? (To answer, move the appropriate SQL statements from the list of statements to the answer area and arrange them in the correct order.)

image

Answer:

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