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Home » [Free] 2017(Sep) EnsurePass Braindumps Microsoft 70-461 Dumps with VCE and PDF 81-90

[Free] 2017(Sep) EnsurePass Braindumps Microsoft 70-461 Dumps with VCE and PDF 81-90

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Querying Microsoft SQL Server 2012

Question No: 81

A table named Profits stores the total profit made each year within a territory. The Profits table has columns named Territory, Year, and Profit.

You need to create a report that displays the profits made by each territory for each year and its previous year.

Which Transact-SQL query should you use?

  1. SELECT Territory, Year, Profit, LEAD(Profit, 1, 0) OVER (PARTITION BY Territory ORDER BY Year) AS PreviousYearProfit FROM Profits

  2. SELECT Territory, Year, Profit, LAG(Profit, 1, 0) OVER (PARTITION BY Year ORDER BY Territory) AS PreviousYearProfit FROM Profits

  3. SELECT Territory, Year, Profit, LAG(Profit, 1, 0) OVER (PARTITION BY Territory ORDER BY Year) AS PreviousYearProfit FROM Profits

  4. SELECT Territory, Year, Profit, LEAD(Profit, 1, 0) OVER (PARTITION BY Year ORDER BY Territory) AS PreviousYearProfit FROM Profits

Answer: C Explanation:

LAG accesses data from a previous row in the same result set without the use of a self-join in SQL Server 2016. LAG provides access to a row at a given physical offset that comes before the current row. Usethis analytic function in a SELECT statement to compare values in the current row with values in a previous row.

Use ORDER BY Year, not ORDER BY Territory.

Example: The following example uses the LAG function to return the difference in sales quotas fora specific employee over previous years. Notice that because there is no lag value available for the first row, the default of zero (0) is returned.

USE AdventureWorks2012; GO

SELECT BusinessEntityID, YEAR(QuotaDate) AS SalesYear, SalesQuota AS CurrentQuota,

LAG(SalesQuota, 1,0) OVER (ORDER BY YEAR(QuotaDate)) AS PreviousQuota FROM Sales.SalesPersonQuotaHistory

WHERE BusinessEntityID = 275 and YEAR(QuotaDate) IN (#39;2005#39;,#39;2006#39;);

Question No: 82 CORRECT TEXT

You have a database that contains the tables as shown below:

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You have a stored procedure named Procedure1. Procedure1 retrieves all order ids after a specific date. The rows for Procedure1 are not sorted. Procedure1 has a single parameter named Parameter1. Parameter1 uses the varchar type and is configured to pass the specific date to Procedure1. A database administrator discovers that OrderDate is not being compared correctly to Parameter1 after the data type of the column is changed to datetime. You need to update the SELECT statement to meet the following requirements:

->The code must NOT use aliases.

->The code must NOT use object delimiters.

->The objects called in Procedure1 must be able to be resolved by all users.

->OrderDate must be compared to Parameter1 after the data type of Parameter1 is changed to datetime.

Which SELECT statement should you use?

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

Answer: Please review the explanation part for this answer

Explanation:

SELECT Orders.OrderID FROM Orders

WHERE Orders.OrderDategt;CONVERT(datetime,@Parameter1)

Question No: 83

You administer a Microsoft SQL Server 2012 database that includes a table named Products. The Products table has columns named ProductId, ProductName, and CreatedDateTime.

The table contains a unique constraint on the combination of ProductName and CreatedDateTime.

You need to modify the Products table to meet the following requirements:

->Remove all duplicates of the Products table based on the ProductName column.

->Retain only the newest Products row.

Which Transact-SQL query should you use?

  1. WITH CTEDupRecords AS

    (

    SELECT MIN(CreatedDateTime) AS CreatedDateTime, ProductName FROM Products

    GROUP BY ProductName HAVING COUNT(*) gt; 1

    )

    DELETE p

    FROM Products p

    JOIN CTEDupRecords cte ON cte.ProductName = p.ProductName AND cte.CreatedDateTime gt;

  2. CreatedDateTime

  3. WITH CTEDupRecords AS

    (

    SELECT MAX(CreatedDateTime) AS CreatedDateTime, ProductName FROM Products

    GROUP BY ProductName HAVING COUNT(*) gt; 1

    )

    DELETE p

    FROM Products p

    JOIN CTEDupRecords cte ON

  4. ProductName = cte.ProductName AND p.CreatedDateTime lt; cte.CreatedDateTime

  5. WITH CTEDupRecords AS

    (

    SELECT MIN(CreatedDateTime) AS CreatedDateTime, ProductName FROM Products

    GROUP BY ProductName

    )

    DELETE p

    FROM Products p

    JOIN CTEDupRecords cte ON

  6. ProductName = cte.ProductName

  7. WITH CTEDupRecords AS

    (

    SELECT MAX(CreatedDateTime) AS CreatedDateTime, ProductName FROM Products

    GROUP BY ProductName HAVING COUNT(*) gt; 1

    )

    DELETE p

    FROM Products p

    JOIN CTEDupRecords cte ON

  8. ProductName = cte.ProductName

Answer: B

Question No: 84

You develop a database application. You create four tables. Each table stores different categories of products.

You create a Primary Key field on each table.

You need to ensure that the following requirements are met:

->The fields must use the minimum amount of space.

->The fields must be an incrementing series of values.

->The values must be unique among the four tables.

What should you do?

  1. Create a ROWVERSION column.

  2. Create a SEQUENCE object that uses the INTEGER data type.

  3. Use the INTEGER data type along with IDENTITY

  4. Use the UNIQUEIDENTIFIER data type along with NEWSEQUENTIALID()

  5. Create a TIMESTAMP column.

Answer: D

Question No: 85 CORRECT TEXT

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

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You have an application named Appl. You have a parameter named @Count that uses the int data type. App1 is configured to pass @Count to a stored procedure.

You need to create a stored procedure named usp_Customers for App1 that returns only the number of rows specified by the @Count parameter.

The solution must NOT use BEGIN, END, or DECLARE statements.

Part of the correct Transact-SQL statement has been provided in the answer area.

Complete the Transact-SQL statement

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Answer: Please review the explanation part for this answer

Explanation:

CREATE PROCEDURE usp_Customers @Count int SELECT TOP(@Count)

Customers.LastName FROM Customers

ORDER BY Customers.LastName

Question No: 86 DRAG DROP

You use Microsoft SQL Server to develop a database application.

You create a stored procedure named usp_calculategrowth. The stored procedure modifies rows and can result in several different exceptions.

You need to ensure that when the stored procedure is executed, the following requirements are met:

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Which six Transact-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.)

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Answer:

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Explanation:

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Box 1: BEGIN TRY

A TRY…CATCH construct consists of two parts: a TRY block and a CATCH block. When an error condition is detected in a Transact-SQL statement that is inside a TRY block, control is passed to a CATCH block where the error can be processed.

A TRY blockstarts with the BEGIN TRY statement and ends with the END TRY statement. Box 2: Exec usp_calculategrowth

Box 3: END TRY

Box 4: BEGIN CATCH

A TRY block must be followed immediately by a CATCH block. A CATCH block starts with the BEGIN CATCH statement andends with the END CATCH statement.

Box 5: EXEC xp_logevent …

xp_logevent logs a user-defined message in the SQL Server log file and in the Windows Event Viewer. xp_logevent can be used to send an alert without sending a message to the client.

Incorrect:

Not RAISERROR: RAISERROR generates an error message and initiates error processing for the session.

The message is returned as a server error message to the calling application or to an associated CATCH block of a TRY…CATCH construct. New applicationsshould use THROW instead.

Box 6: END CATCH

References:

https://msdn.microsoft.com/en-us/library/ms186244.aspx https://technet.microsoft.com/en-us/library/ms179296(v=sql.105).aspx

Question No: 87

You develop a Microsoft SQL Server 2012 database. You create a view from the Orders and OrderDetails tables by using the following definition.

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You need to improve the performance of the view by persisting data to disk. What should you do?

  1. Create an INSTEAD OF trigger on the view.

  2. Create an AFTER trigger on the view.

  3. Modify the view to use the WITH VIEW_METADATA clause.

  4. Create a clustered index on the view.

Answer: D

Reference: http://msdn.microsoft.com/en-us/library/ms188783.aspx

Question No: 88 HOTSPOT

You are developing an SQL Server database. The database contains two tables and a function that are defined by the following Transact-SQL statements.

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You need to create a query to determine the total number of products that are sold each day for the live top-selling products on that particular day.

How should you complete the relevant Transact-SQL script? To answer, select the appropriate Transact-SQL statements from each list in the answer area.

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Answer:

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Explanation:

The APPLY operator allows you to invoke a table-valued function for each row returned by an outer table expression of a query. T

There are two forms of APPLY: CROSS APPLY and OUTER APPLY. CROSS APPLY returns only rows from the outer table that produce a result set from the table-valued function. OUTER APPLY returns both rows that produce a result set, and rows that do not, with NULL values in the columns produced by the table-valued function.

Question No: 89

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?

  1. SELECT COUNT(*) FROM SalesOrders WHERE OrderTime = CONVERT(DATE, GETDATE())

  2. SELECT COUNT(*) FROM SalesOrders WHERE OrderTime = GETDATE()

  3. SELECT COUNT(*) FROM SalesOrders WHERE CONVERT(VARCHAR, OrderTime,

    112) = CONVERT(VARCHAR, GETDATE(), 112))

  4. SELECT COUNT(*) FROM SalesOrders WHERE OrderTime gt;= CONVERT(DATE, GETDATE()) AND OrderTime lt; DATEADD(DAY, 1, CONVERT(DATE, GETDATE()))

Answer: D

Question No: 90

You use Microsoft SQL Server 2012 to write code for a transaction that contains several statements.

There is high contention between readers and writers on several tables used by your transaction.

You need to minimize the use of the tempdb space. You also need to prevent reading queries from blocking writing queries.

Which isolation level should you use?

  1. SERIALIZABLE

  2. SNAPSHOT

  3. READ COMMITTED SNAPSHOT

  4. REPEATABLE READ

Answer: C

Reference: http://msdn.microsoft.com/en-us/library/ms173763.aspx

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