SQL Quiz

R M
Quiz by R M, updated more than 1 year ago
R M
Created by R M about 5 years ago
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A collection of random questions and dumps
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Question 1

Question
Your database contains two tables named DomesticSalesOrders and InternationalSalesOrders. Both tables contain more than 100 million rows. Each table has a Primary Key column named SalesOrderId. The data in the two tables is distinct from one another. Business users want a report that includes aggregate information about the total number of global sales and total sales amounts. You need to ensure that your query executes in the minimum possible time. Which query should you use?
Answer
  • SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount FROM ( SELECT SalesOrderId, SalesAmount FROM DomesticSalesOrders UNION ALL SELECT SalesOrderId, SalesAmount FROM InternationalSalesOrders ) AS p
  • SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount FROM ( SELECT SalesOrderId, SalesAmount FROM DomesticSalesOrders UNION SELECT SalesOrderId, SalesAmount FROM InternationalSalesOrders ) AS p
  • SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount FROM DomesticSalesOrders UNION SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount FROM InternationalSalesOrders
  • SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount FROM DomesticSalesOrders UNION ALL SELECT COUNT(*) AS NumberOfSales, SUM(SalesAmount) AS TotalSalesAmount

Question 2

Question
You are a database developer at an independent software vendor. You create stored procedures that contain proprietary code. You need to protect the code from being viewed by your customers. Which stored procedure option should you use?
Answer
  • ENCRYPTBYKEY
  • ENCRYPTION
  • ENCRYPTBYPASSPHRASE
  • ENCRYPTBYCERT

Question 3

Question
You use a Microsoft SQL Server 2012 database. You want to create a table to store Microsoft Word documents. You need to ensure that the documents must only be accessible via Transact-SQL queries. Which Transact-SQL statement should you use?
Answer
  • CREATE TABLE DocumentStore ( [Id] INT NOT NULL PRIMARY KEY, [Document] VARBINARY(MAX) NULL ) GO
  • CREATE TABLE DocumentStore ( [Id] hierarchyid, [Document] NVARCHAR NOT NULL )
  • CREATE TABLE DocumentStore AS FileTable
  • CREATE TABLE DocumentStore ( [Id] [uniqueidentifier] ROWGUIDCOL NOT NULL UNIQUE, [Document] VARBINARY(MAX) FILESTREAM NULL ) GO

Question 4

Question
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 preceding year. Which Transact-SQL query should you use?
Answer
  • SELECT Territory, Year, Profit, LAG(Profit, 1, 0) OVER(PARTITION BY Year ORDER BY Territory) AS NextProfit FROM Profits
  • SELECT Territory, Year, Profit, LAG(Profit, 1, 0) OVER(PARTITION BY Territory ORDER BY Year) AS NextProfit FROM Profits
  • SELECT Territory, Year, Profit, LEAD(Profit, 1, 0) OVER(PARTITION BY Territory ORDER BY Year) AS NextProfit FROM Profits
  • SELECT Territory, Year, Profit, LEAD(Profit, 1, 0) OVER(PARTITION BY Year ORDER BY Territory) AS NextProfit FROM Profits

Question 5

Question
You use Microsoft SQL Server 2012 to develop a database application. Your application sends data to an NVARCHAR(MAX) variable named @var. You need to write a Transact-SQL statement that will find out the success of a cast to a decimal (36,9). Which code segment should you use?select
Answer
  • BEGIN TRY SELECT convert(decimal(36,9), @var) AS Value, ‘True’ AS BadCast END TRY BEGIN CATCH SELECT convert(decimal(36,9), @var) AS Value, ‘False’ AS BadCast END CATCH
  • TRY( SELECT convert(decimal(36,9), @var) SELECT ‘True’ AS BadCast ) CATCH( SELECT ‘False’ AS BadCast )
  • SELECT CASE WHEN convert(decimal(36,9), @var) IS NULL THEN ‘True’ ELSE ‘False’ END AS BadCast
  • SELECT IIF(TRY_PARSE(@var AS decimal(36,9)) IS NULL, ‘True’, ‘False’) AS BadCast

Question 6

Question
You are writing a set of queries against a FILESTREAM-enabled database. You create a stored procedure that will update multiple tables within a transaction. You need to ensure that if the stored procedure raises a run-time error, the entire transaction is terminated and rolled back. Which Transact-SQL statement should you include at the beginning of the stored procedure?
Answer
  • SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
  • SET XACT_ABORT OFF
  • SET TRANSACTION ISOLATION LEVEL SNAPSHOT
  • SET IMPLICIT_TRANSACTIONS ON
  • SET XACT_ABORT ON
  • SET IMPLICIT TRANSACTIONS OFF

Question 7

Question
You have a Microsoft SQL Server 2012 database that contains tables named Customers and Orders. The tables are related by a column named CustomerID. You need to create a query that meets the following requirements: Returns the CustomerName for all customers and the OrderDate for any orders that they have placed. Results must include customers who have not placed any orders. Which Transact-SQL query should you use?
Answer
  • SELECT CustomerName, OrderDate FROM Customers RIGHT OUTER JOIN Orders ON Customers.CustomerID = Orders.CustomerID
  • SELECT CustomerName, CrderDate FROM Customers JOIN Orders ON Customers.CustomerID = Orders.CustomerID
  • SELECT CustomerName, OrderDate FROM Customers CROSS JOIN Orders ON Customers.CustomerID = Orders.CustomerID
  • SELECT CustomerName, OrderDate FROM Customers LEFT OUTER JOIN Orders ON Customers.CustomerID = Orders.CustomerID

Question 8

Question
You create a stored procedure that will update multiple tables within a transaction. You need to ensure that if the stored procedure raises a run-time error, the entire transaction is terminated and rolled back. Which Transact-SQL statement should you include at the beginning of the stored procedure?
Answer
  • SET XACT_ABORT ON
  • SET ARITHABORT ON
  • TRY
  • BEGIN
  • SET ARITHABORT OFF

Question 9

Question
You develop a Microsoft SQL Server 2012 database. You need to create a batch process that meets the following requirements: Status information must be logged to a status table. If the status table does not exist at the beginning of the batch, it must be created. Which object should you use?
Answer
  • Scalar user-defined function
  • Inline user-defined function
  • Table-valued user-defined function
  • Stored procedure

Question 10

Question
You administer a database that includes a table named Customers that contains more than 750 rows. You create a new column named PartitionNumber of the int type in the table. You need to assign a PartitionNumber for each record in the Customers table. You also need to ensure that the PartitionNumber satisfies the following conditions: Always starts with 1. Starts again from 1 after it reaches 100. Which Transact-SQL statement should you use?
Answer
  • REATE SEQUENCE CustomerSequence AS int START WITH 0 INCREMENT BY 1 MINVALUE 1 MAXVALUE 100 UPDATE Customers SET PartitionNumber = NEXT VALUE FOR CustomerSequence DROP SEQUENCE CustomerSequence
  • CREATE SEQUENCE CustomerSequence AS int START WITH 1 INCREMENT BY 1 MINVALUE 1 MAXVALUE 100 CYCLE UPDATE Customers SET PartitionNumber = NEXT VALUE FOR CustomerSequence DROP SEQUENCE CustomerSequence
  • CREATE SEQUENCE CustomerSequence AS int START WITH 1 INCREMENT BY 1 MINVALUE 1 MAXVALUE 100 UPDATE Customers SET PartitionNumber = NEXT VALUE FOR CustomerSequence + 1 DROP SEQUENCE CustomerSequence
  • CREATE SEQUENCE CustomerSequence AS int START WITH 1 INCREMENT BY 1 MINVALUE 0 MAXVALUE 100 CYCLE UPTATE Customers SET PartitionNumber = NEXT VALUE FOR CustomerSequence DROP SEQUENCE CustomerSequence

Question 11

Question
You use a Microsoft SQL Server 2012 database that contains a table named BlogEntry that has the following columns: Id is the Primary Key. You need to append the “This is in a draft stage” string to the Summary column of the recent 10 entries based on the values in EntryDateTime. Which Transact-SQL statement should you use?
Answer
  • UPDATE TOP(10) BlogEntry SET Summary.WRITE(N’ This is in a draft stage’, NULL, 0)
  • UPDATE BlogEntry SET Summary = CAST(N’ This is in a draft stage’ as nvarchar(max)) WHERE Id IN(SELECT TOP(10) Id FROM BlogEntry ORDER BY EntryDateTime DESC)
  • UPDATE BlogEntry SET Summary.WRITE(N’ This is in a draft stage’, NULL, 0) FROM ( SELECT TOP(10) Id FROM BlogEntry ORDER BY EntryDateTime DESC) AS s WHERE BlogEntry.Id = s.ID
  • UPDATE BlogEntry SET Summary.WRITE(N’ This is in a draft stage’, 0, 0) WHERE Id IN(SELECT TOP(10) Id FROM BlogEntry ORDER BY EntryDateTime DESC)

Question 12

Question
You use Microsoft SQL Server 2012 to develop a database application. You create a stored procedure named DeleteJobCandidate. You need to ensure that if DeleteJobCandidate encounters an error, the execution of the stored procedure reports the error number. Which Transact-SQL statement should you use?
Answer
  • DECLARE @ErrorVar INT; DECLARE @RowCountVar INT; EXEC DeleteJobCandidate SELECT @ErrorVar = @@ERROR, @RowCountVar = @@ROWCOUNT; IF (@ErrorVar <> 0) PRINT N’Error = ‘ + CAST(@@ErrorVar AS NVARCHAR(8)) + N’, Rows Deleted = ‘ + CAST(@@RowCountVar AS NVARCHAR(8)); GO
  • DECLARE @ErrorVar INT; DECLARE @RowCountVar INT; EXEC DeleteJobCandidate SELECT @ErrorVar = ERROR_STATE(), @RowCountVar = @@ROWCOUNT; IF (@ErrorVar <> 0) PRINT N’Error = ‘ + CAST(ERRORSTATE() AS NVARCHAR(8)) + N’, Rows Deleted = ‘ + CAST(@@RowCountVar AS NVARCHAR(8)); GO
  • EXEC DeleteJobCandidate IF (ERROR_STATE() != 0) PRINT N’Error = ‘ + CAST(@@ERROR AS NVARCHAR(8)) + N’, Rows Deleted = ‘ + CAST(@@ROWCOUNT AS NVARCHAR(8)); GO
  • EXEC DeleteJobCandidate PRINT N’Error = ‘ + CAST(@@ERROR AS NVARCHAR(8)) + N’, Rows Deleted = ‘ + CAST(@@ROWCOUNT AS NVARCHAR(8)); GO

Question 13

Question
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.) EmTmp ” Column Name Condensed Type EmployeeID int EmployeeNum char{lO) LastNamen nvarchar(21 ) FirstNamen nvarchar(21} MiddlName nvarchar(20) DateHired Date DepartmentID int JobTrtJe varchar(200) ReportsToID int Column Name Descriptjon EmployeeID(pk) uniquely identifies the employee record in the table Used throughout the database by all the other tables that reference the Employee table EmployeeNum an alphanumeric value calculated according to company Requirements Has to be unique within the Employee table Exists only within the Employee table DepartmentID References another table named Department that contains data each department in the company ReportsToID Contains the EmployeeID of the manager to whom an employee reports ReportsToID Contains the EmployeeID of the manager to whom an employee reports Confidential information about lne 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 a create a unique constraint?
Answer
  • DateHired
  • DepartmentID
  • EmployeelD
  • EmployeeNum
  • FirstName
  • JobTitle
  • ReportsToID

Question 14

Question
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.) 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?
Answer
  • DateHired
  • DepartmentID
  • EmployeeID
  • EmployeeNum
  • FirstName
  • JobTitle

Question 15

Question
You administer a Microsoft SQL Server 2012 database that includes a table named Products. The Products table has columns named Productld, 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?
Answer
  • WITH CTEDupRecords AS ( SELECT MAX(CreatedDateTime) AS CreatedDateTime, ProductName FROM Products GROUP BY ProductName HAVING COUNT(*) > 1 ) DELETE p FROM Products p JOIN CTEDupRecords cte ON p.ProductName = cte.ProductName AND p.CreatedDateTime > cte.CreatedDateTime
  • WITH CTEDupRecords AS ( SELECT MAX(CreatedDateTime) AS CreatedDateTime, ProductName FROM Products GROUP BY ProductName HAVING COUNT(*) > 1 ) DELETE p FROM Products p JOIN CTEDupRecords cte ON cte.ProductName = p.ProductName AND cte.CreatedDateTime > p.CreatedDateTime
  • WITH CTEDupRecords AS ( SELECT MIN(CreatedDateTime) AS CreatedDateTime, ProductName FROM Products GROUP BY ProductName ) DELETE p FROM Products p JOIN CTEDupRecords cte ON p.ProductName = cte.ProductName
  • WITH CTEDupRecords AS ( SELECT MAX(CreatedDateTime) AS CreatedDateTime, ProductName FROM Products GROUP BY ProductName HAVING COUNT(*) > 1 ) DELETE p FROM Products p JOIN CTEDupRecords cte ON p.ProductName = cte.ProductName

Question 16

Question
You develop three Microsoft SQL Server 2012 databases named Database1, Database2, and Database3. You have permissions on both Database1 and Database2. You plan to write and deploy a stored procedure named dbo.usp_InsertEvent in Database3. dbo.usp_InsertEvent must execute other stored procedures in the other databases. You need to ensure that callers that do not have permissions on Database1 or Database2 can execute the stored procedure. Which Transact-SQL statement should you use?
Answer
  • USE Database2
  • EXECUTE AS OWNER
  • USE Database1
  • EXECUTE AS CALLER

Question 17

Question
You use Microsoft SQL Server 2012 database to develop a shopping cart application. You need to invoke a table-valued function for each row returned by a query. Which Transact-SQL operator should you use?
Answer
  • CROSS JOIN
  • UNPIVOT
  • PIVOT
  • CROSS APPLY

Question 18

Question
You support a database structure shown in the exhibit. (Click the Exhibit button.) You need to write a query that displays the following details: Total sales made by sales people, year, city, and country Sub totals only at the city level and country level A grand total of the sales amount
Answer
  • SELECT SalesPerson.Name, Country, City, DatePart(yyyy, SaleDate) AS Year, Sum(Amount) AS Total FROM Sale INNER JOIN SalesPerson ON Sale.SalesPersonID = SalesPerson.SalesPersonID GROUP BY GROUPING SETS((SalesPerson.Name, Country, City, DatePart(yyyy, SaleDate)), (Country, City), (Country), ())
  • SELECT SalesPerson.Name, Country, City, DatePart(yyyy, SaleDate) AS Year, Sum(Amount) AS Total FROM Sale INNER JOIN SalesPerson ON Sale.SalesPersonID = SalesPerson.SalesPersonID GROUP BY CUBE(SalesPerson.Name, Country, City, DatePart(yyyy, SaleDate))
  • SELECT SalesPerson.Name, Country, City, DatePart(yyyy, SaleDate) AS Year, Sum(Amount) AS Total FROM Sale INNER JOIN SalesPerson ON Sale.SalesPersonID = SalesPerson.SalesPersonID GROUP BY CUBE(SalesPerson.Name, DatePart(yyyy, SaleDate), City, Country)
  • SELECT SalesPerson.Name, Country, City, DatePart(yyyy, SaleDate) AS Year, Sum(Amount) AS Total FROM Sale INNER JOIN SalesPerson ON Sale.SalesPersonID = SalesPerson.SalesPersonID GROUP BY ROLLUP(SalesPerson.Name, DatePart(yyyy, SaleDate), City, Country)

Question 19

Question
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?
Answer
  • Float
  • Money
  • Smallmoney
  • Numeric

Question 20

Question
You administer a Microsoft SQL Server database that supports a banking transaction management application. You need to retrieve a list of account holders who live in cities that do not have a branch location. Which Transact-SQL query or queries should you use? (Each correct answer presents a complete solution. Choose all that apply.)
Answer
  • SELECT AccountHolderID FROM AccountHolder WHERE CityID NOT IN (SELECT CityID FROM BranchMaster)
  • SELECT AccountHolderID FROM AccountHolder WHERE CityID <> ALL (SELECT CityID FROM BranchMaster)
  • SELECT AccountHolderlD FROM AccountHolder WHERE CityID <> SOME (SELECT CityID FROM BranchMaster)
  • SELECT AccountHolderID FROM AccountHolder WHERE CityID <> ANY (SELECT CityID FROM BranchMaster)

Question 21

Question
You have a database that contains the tables as shown in the exhibit. (Click the Exhibit button.) You have the following query: You need to recreate the query to meet the following requirements: Reference columns by using one-part names only. Sort aggregates by SalesTerritoryID, and then by ProductID. Order the results in descending order from SalesTerritoryID to ProductID. The solution must use the existing SELECT clause and FROM clause. Which code segment should you use? To answer, type the correct code in the answer area.
Answer
  • SELECT SalesTerritoryID, ProductID, AVG(UnitPrice), MAX(OrderQty), MAX(DiscountAmount) FROM Sales.Details GROUP BY SalesTerritoryID , ProductID ORDER BY SalesTerritoryID DESC, ProductID DESC
  • Manual Entry

Question 22

Question
You have a database that contains the tables shown in the exhibit. (Click the Exhibit button). 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
  • 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 O.OrderDate DESC
  • Manual Entry

Question 23

Question
You have an XML schema collection named Sales.InvoiceSchema. You need to declare a variable of the XML type named XML1. The solution must ensure that XML1 is validated by using Sales.InvoiceSchema. Which code segment should you use? To answer, type the correct code in the answer area.
Answer
  • DECLARE @XML1 XML(Sales.InvoiceSchema)
  • Manual Entry

Question 24

Question
You have a database that contains the tables shown in the exhibit. (Click the Exhibit button.) You have an application named App1. 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 Appl. Usp_Customers must meet the following requirements: NOT use object delimiters. Minimize sorting and counting. Return only the last name of each customer in alphabetical order. Return only the number of rows specified by the @Count parameter. The solution must NOT use BEGIN and END statements. Which code segment should you use?
Answer
  • CREATE PROCEDURE usp_Customers @Count int AS SELECT TOP(@Count) Customers.LastName FROM Customers ORDER BY Customers.LastName
  • Manual Entry

Question 25

Question
You develop a Microsoft SQL Server 2012 database. You create a view from the Orders and OrderDetails tables by using the following definition. You need to ensure that users are able to modify data by using the view. What should you do?
Answer
  • Create an AFTER trigger on the view.
  • Modify the view to use the WITH VIEW_METADATA clause
  • Create an INSTEAD OF trigger on the view.
  • Modify the view to an indexed view.

Question 26

Question
You have a view that was created by using the following code: You need to create an inline table-valued function named Sales.fn_OrdersByTerritory, which must meet the following requirements: Accept the @T integer parameter. Use one-part names to reference columns. Filter the query results by SalesTerritoryID. Return the columns in the same order as the order used in OrdersByTerritoryView. Which code segment should you use?
Answer
  • CREATE FUNCTION Sales.fn_OrdersByTerritory (@T int) RETURNS TABLE AS RETURN ( SELECT OrderID,OrderDate,SalesTerrirotyID,TotalDue FROM Sales.OrdersByTerritory WHERE SalesTerritoryID = @T )
  • Manual Entry

Question 27

Question
You have a database that contains the tables shown in the exhibit. (Click the Exhibit button.) You deploy a new server that has SQL Server 2012 installed. You need to create a table named Sales. OrderDetails on the new server. Sales.OrderDetails must meet the following requirements: Write the results to a disk. Contain a new column named LineItemTotal that stores the product of ListPrice and Quantity for each row. The code must NOT use any object delimiters. The solution must ensure that LineItemTotal is stored as the last column in the table. Which code segment should you use?
Answer
  • CREATE TABLE Sales.OrderDetails ( ListPrice money not null, Quantity int not null, LineItemTotal as (ListPrice * Quantity) PERSISTED)
  • Manual Entry

Question 28

Question
You have a database that contains the tables shown in the exhibit. (Click the Exhibit button.) You need to create a view named uv_CustomerFullName to meet the following requirements: The code must NOT include object delimiters. The view must be created in the Sales schema. Columns must only be referenced by using one-part names. The view must return the first name and the last name of all customers. The view must prevent the underlying structure of the customer table from being changed. The view must be able to resolve all referenced objects, regardless of the user’s default schema. Which code segment should you use?
Answer
  • CREATE VIEW Sales.uv_CustomerFullName WITH SCHEMABINDING AS SELECT FirstName, LastName FROM Sales.Customers
  • Manual Entry

Question 29

Question
You have a database that contains the tables shown in the exhibit. (Click the Exhibit button.) You need to create a query that calculates the total sales of each OrderId from the Sales.Details table. The solution must meet the following requirements: Use one-part names to reference columns. Sort the order of the results from OrderId. NOT depend on the default schema of a user. Use an alias of TotalSales for the calculated ExtendedAmount. Display only the OrderId column and the calculated TotalSales column. Which code segment should you use?
Answer
  • SELECT OrderID, SUM(ExtendedAmount) AS TotalSales FROM Sales.Details GROUP BY OrderID ORDER BY OrderID
  • Manual Entry

Question 30

Question
You administer a Microsoft SQL Server 2012 database that contains a table named OrderDetail. You discover that the NCI_OrderDetail_CustomerID non-clustered index is fragmented. You need to reduce fragmentation. You need to achieve this goal without taking the index offline. Which Transact-SQL batch should you use?
Answer
  • CREATE INDEX NCI_OrderDetail_CustomerID ON OrderDetail.CustomerID WITH DROP EXISTING
  • ALTER INDEX NCI_OrderDetail_CustomerID ON OrderDetail.CustomerID REORGANIZE
  • ALTER INDEX ALL ON OrderDetail REBUILD
  • ALTER INDEX NCI_OrderDetail_CustomerID ON OrderDetail.CustomerID REBUILD

Question 31

Question
You develop a Microsoft SQL Server 2012 database. The database is used by two web applications that access a table named Products. You want to create an object that will prevent the applications from accessing the table directly while still providing access to the required data. You need to ensure that the following requirements are met: Future modifications to the table definition will not affect the applications’ ability to access data. The new object can accommodate data retrieval and data modification. You need to achieve this goal by using the minimum amount of changes to the existing applications. What should you create for each application?
Answer
  • views
  • table partitions
  • table-valued functions
  • stored procedures

Question 32

Question
ou develop a Microsoft SQL Server 2012 database. You need to create a batch process that meets the following requirements: Returns a result set based on supplied parameters. Enables the returned result set to perform a join with a table. Which object should you use?
Answer
  • Inline user-defined function
  • Stored procedure
  • Table-valued user-defined function
  • Scalar user-defined function

Question 33

Question
You develop a Microsoft SQL Server 2012 database. You need to create and call a stored procedure that meets the following requirements: Accepts a single input parameter for CustomerID. Returns a single integer to the calling application. Which Transact-SQL statement or statements should you use? (Each correct answer presents part of the solution. Choose all that apply.)
Answer
  • CREATE PROCEDURE dbo.GetCustomerRating @Customer INT, @CustomerRatIng INT OUTPUT AS SET NOCOUNT ON SELECT @CustomerRating = CustomerOrders/CustomerValue FROM Customers WHERE CustomerID = @CustomerID RETURN GO
  • EXECUTE dbo.GetCustomerRatIng 1745
  • DECLARE @customerRatingBycustomer INT DECLARE @Result INT EXECUTE @Result = dbo.GetCustomerRating 1745 , @CustomerRatingSyCustomer
  • CREATE PROCEDURE dbo.GetCustomerRating @CustomerID INT, @CustomerRating INT OUTPUT AS SET NOCOUNT ON SELECT @Result = CustomerOrders/CustomerValue FROM Customers WHERE CustomerID = @CustomeriD RETURN @Result GO
  • DECLARE @CustomerRatIngByCustcmer INT EXECUTE dbo.GetCustomerRating @CustomerID = 1745, @CustomerRating = @CustomerRatingByCustomer OUTPUT
  • CREATE PROCEDURE dbo.GetCustomerRating @CustomerID INT AS DECLARE @Result INT SET NOCOUNT ON SELECT @Result = CustomerOrders/CustomerVaLue FROM Customers WHERE Customer= = @CustomerID RETURNS @Result

Question 34

Question
You develop a Microsoft SQL Server 2012 database that contains a table named Customers. The Customers table has the following definition: You need to create an audit record only when either the MobileNumber or HomeNumber column is updated. Which Transact-SQL query should you use?
Answer
  • CREATE TRIGGER TrgPhoneNumberChange ON Customers FOR UPDATE AS IF COLUMNS_UPDATED (HomeNumber, MobileNumber) – – Create Audit Records
  • CREATE TRIGGER TrgPhoneNumberChange ON Customers FOR UPDATE AS IF EXISTS( SELECT HomeNumber FROM inserted) OR EXISTS (SELECT MobileNumber FROM inserted) – – Create Audit Records
  • CREATE TRIGGER TrgPhoneNumberChange ON Customers FOR UPDATE AS IF COLUMNS_CHANGED (HomeNumber, MobileNumber) – – Create Audit Records
  • CREATE TRIGGER TrgPhoneNumberChange ON Customers FOR UPDATE AS IF UPDATE (HomeNumber) OR UPDATE (MobileNumber) – – Create Audit Records

Question 35

Question
You develop a Microsoft SQL Server 2012 database that has two tables named SavingAccounts and LoanAccounts. Both tables have a column named AccountNumber of the nvarchar data type. You use a third table named Transactions that has columns named TransactionId AccountNumber, Amount, and TransactionDate. You need to ensure that when multiple records are inserted in the Transactions table, only the records that have a valid AccountNumber in the SavingAccounts or LoanAccounts are inserted. Which Transact-SQL statement should you use?
Answer
  • REATE TRIGGER TrgValidateAccountNumber ON Transactions INSTEAD OF INSERT AS BEGIN INSERT INTO Transactions SELECT TransactionID,AccountNumber,Amount,TransactionDate FROM inserted WHERE AccountNumber IN (SELECT AccountNumber FROM LoanAccounts UNION SELECT AccountNumber FROM SavingAccounts)) END
  • CREATE TRIGGER TrgValidateAccountNumber ON Transactions FOR INSERT AS BEGIN INSERT INTO Transactions SELECT TransactionID,AccountNumber,Amount,TransactionDate FROM inserted WHERE AccountNumber IN (SELECT AccountNumber FROM LoanAccounts UNION SELECT AccountNumber FROM SavingAccounts)) END
  • CREATE TRIGGER TrgValidateAccountNumber ON Transactions INSTEAD OF INSERT AS BEGIN IF EXISTS ( SELECT AccountNumber FROM inserted EXCEPT (SELECT AccountNumber FROM LoanAccounts UNION SELECT AccountNumber FROM SavingAccounts)) BEGIN ROLLBACK TRAN END END
  • CREATE TRIGGER TrgValidateAccountNumber ON Transactions FOR INSERT AS BEGIN IF EXISTS ( SELECT AccountNumber FROM inserted EXCEPT (SELECT AccountNumber FROM LoanAccounts UNION SELECT AccountNumber FROM SavingAccounts)) BEGIN ROLLBACK TRAN END END

Question 36

Question
You develop a Microsoft SQL Server 2012 database. You create a view that performs the following tasks: Joins 8 tables that contain up to 500,000 records each. Performs aggregations on 5 fields. The view is frequently used in several reports. You need to improve the performance of the reports. What should you do?
Answer
  • Convert the view into a table-valued function.
  • Convert the view into a Common Table Expression (CTE).
  • Convert the view into an indexed view.
  • Convert the view into a stored procedure and retrieve the result from the stored procedure into a temporary table.

Question 37

Question
You are a database developer of a Microsoft SQL Server 2012 database. The database contains a table named Customers that has the following definition: You need to ensure that the CustomerId column in the Orders table contains only values that exist in the CustomerId column of the Customer table. Which Transact-SQL statement should you use?
Answer
  • ALTER TABLE Orders ADD CONSTRAINT FX_Orders_CustomerID FOREIGN KEY (CustomerId) REFERENCES Customer (CustomerId)
  • ALTER TABLE Customer ADD CONSTRAINT FK_Customer_CustomerID FOREIGN KEY {CustomerID) REFERENCES Orders (CustomerId)
  • ALTER TABLE Orders ADD CONSTRAINT CK_Crders_CustomerID CHECK (CustomerId IN (SELECT CustomerId FROM Customer))
  • ALTER TABLE Customer ADD OrderId INT NOT NULL; ALTER TABLE Customer ADD CONSTRAINT FK_Customer_OrderID FOREIGN KEY (CrderlD) REFERENCES Orders (CrderlD);
  • ALTER TABLE Orders ADD CONSTRAINT PK Orders CustomerId PRIMARY KEY (CustomerID)

Question 38

Question
You have three tables that contain data for dentists, psychiatrists, and physicians. You create a view that is used to look up their email addresses and phone numbers. The view has the following definition: You need to ensure that users can update only the phone numbers and email addresses by using this view. What should you do?
Answer
  • Alter the view. Use the EXPAND VIEWS query hint along with each SELECT statement.
  • Create an INSTEAD OF UPDATE trigger on the view.
  • Drop the view. Re-create the view by using the SCHEMABINDING clause, and then create an index on the view.
  • Create an AFTER UPDATE trigger on the view.

Question 39

Question
You administer a Microsoft SQL Server 2012 database named ContosoDb. The database contains a table named Suppliers and a column named IsActive in the Purchases schema. You create a new user named ContosoUser in ContosoDb. ContosoUser has no permissions to the Suppliers table. You need to ensure that ContosoUser can delete rows that are not active from Suppliers. You also need to grant ContosoUser only the minimum required permissions. Which Transact-SQL statement should you use?
Answer
  • GRANT DELETE ON Purchases.Suppliers TO ContosoUser
  • CREATE PROCEDURE Purchases.PurgeInactiveSuppliers WITH EXECUTE AS USER = ‘dbo’ AS DELETE FROM Purchases.Suppliers WHERE IsActive = 0 GO GRANT EXECUTE ON Purchases.PurgelnactiveSuppliers TO ContosoUser
  • GRANT SELECT ON Purchases.Suppliers TO ContosoUser
  • CREATE PROCEDURE Purchases.PurgeInactiveSuppliers AS DELETE FROM Purchases.Suppliers WHERE IsActive = 0 GO GRANT EXECUTE ON Purchases.PurgeInactiveSuppliers TO ContosoUser

Question 40

Question
You use a contained database named ContosoDb within a domain. You need to create a user who can log on to the ContosoDb database. You also need to ensure that you can port the database to different database servers within the domain without additional user account configurations. Which type of user should you create?
Answer
  • User mapped to a certificate
  • SQL user without login
  • Domain user
  • SQL user with login

Question 41

Question
You administer a Microsoft SQL Server 2012 database that has multiple tables in the Sales schema. Some users must be prevented from deleting records in any of the tables in the Sales schema. You need to manage users who are prevented from deleting records in the Sales schema. You need to achieve this goal by using the minimum amount of administrative effort. What should you do?
Answer
  • Create a custom database role that includes the users. Deny Delete permissions on the Sales schema for the custom database role.
  • Include the Sales schema as an owned schema for the db_denydatawriter role. Add the users to the db_denydatawriter role.
  • Deny Delete permissions on each table in the Sales schema for each user.
  • Create a custom database role that includes the users. Deny Delete permissions on each table in the Sales schema for the custom database role.

Question 42

Question
You administer a Microsoft SQL Server 2012 database. The database contains a Product table created by using the following definition: You need to ensure that the minimum amount of disk space is used to store the data in the Product table. What should you do?
Answer
  • Convert all indexes to Column Store indexes.
  • Implement Unicode Compression.
  • Implement row-level compression.
  • Implement page-level compression

Question 43

Question
You generate a daily report according to the following query: You need to improve the performance of the query. What should you do?
Answer
  • Drop the UDF and rewrite the report query as follows: WITH cte(CustomerID, LastOrderDate) AS ( SELECT CustomerID, MAX(OrderDate) AS [LastOrderDate] FROM Sales.SalesOrder GROUP BY CustomerID ) SELECT c.CustomerName FROM cte INNER JOIN Sales.Customer c ON cte.CustomerID = c.CustomerID WHERE cte.LastOrderDate < DATEADD(DAY, -90, GETDATE())
  • Drop the UDF and rewrite the report query as follows: SELECT c.CustomerName FROM Sales.Customer c WHERE NOT EXISTS ( SELECT s.OrderDate FROM Sales.SalesOrder WHERE s.OrderDate > DATEADD(DAY, -90, GETDATE()) AND s.CustomerID = c.CustomerID)
  • Drop the UDF and rewrite the report query as follows: SELECT DISTINCT c.CustomerName FROM Sales.Customer c INNER JOIN Sales.SalesOrder s ON c.CustomerID = s.CustomerID WHERE s.OrderDate < DATEADD(DAY, -90, GETDATE())
  • Rewrite the report query as follows: SELECT c.CustomerName FROM Sales.Customer c WHERE NOT EXISTS (SELECT OrderDate FROM Sales.ufnGetRecentOrders(c. CustomerID, 90))

Question 44

Question
You use Microsoft SQL Server 2012 to develop a database application. You need to implement a computed column that references a lookup table by using an INNER JOIN against another table. What should you do?
Answer
  • Reference a user-defined function within the computed column.
  • Create a BEFORE trigger that maintains the state of the computed column.
  • Add a default constraint to the computed column that implements hard-coded values.
  • Add a default constraint to the computed column that implements hard-coded CASE statements.

Question 45

Question
You use Microsoft SQL Server 2012 to develop a database application. You need to create an object that meets the following requirements: Takes an input variable Returns a table of values Cannot be referenced within a view Which object should you use?
Answer
  • Scalar-valued function
  • Inline function
  • User-defined data type
  • Stored procedure

Question 46

Question
You are a database developer for an application hosted on a Microsoft SQL Server 2012 server. The database contains two tables that have the following definitions: Global customers place orders from several countries. You need to view the country from which each customer has placed the most orders. Which Transact-SQL query do you use?
Answer
  • SELECT c.CustomerID, c.CustomerName, o.ShippingCountry FROM Customer c INNER JOIN (SELECT CustomerID, ShippingCountry, RANK() OVER (PARTITION BY CustomerID ORDER BY COUNT(OrderAmount) DESC) AS Rnk FROM Orders GROUP BY CustomerID, ShippingCountry) AS o ON c.CustomerID = o.CustomerID WHERE o.Rnk = 1
  • SELECT c.CustomerID, c.CustomerName, o.ShippingCountry FROM (SELECT c.CustomerID, c.CustomerName, o.ShippingCountry, RANK() OVER (PARTITION BY CustomerID ORDER BY COUNT(o.OrderAmount) ASC) AS Rnk FROM Customer c INNER JOIN Orders o ON c.CustomerID = o.CustomerID GROUP BY c.CustomerID, c.CustomerName, o.ShippingCountry) cs WHERE Rnk = 1
  • SELECT c.CustomerID, c.CustomerName, o.ShippingCountry FROM Customer c INNER JOIN (SELECT CustomerID, ShippingCountry, RANK() OVER (PARTITION BY CustomerID ORDER BY OrderAmount DESC) AS Rnk FROM Orders GROUP BY CustomerID, ShippingCountry) AS o ON c.CustomerID = o.CustomerID WHERE o.Rnk = 1
  • SELECT c.CustomerID, c.CustomerName, o.ShippingCountry FROM Customer c INNER JOIN (SELECT CustomerID, ShippingCountry, COUNT(OrderAmount) DESC) AS OrderAmount FROM Orders GROUP BY CustomerID, ShippingCountry) AS o ON c.CustomerID = o.CustomerID ORDER BY OrderAmount DESC

Question 47

Question
You create a table that has the StudentCode, SubjectCode, and Marks columns to record mid-year marks for students. The table has marks obtained by 50 students for various subjects. You need to ensure that the top half of the students arranged by their average marks must be given a rank of 1 and the remaining students must be given a rank of 2. Which Transact-SQL query should you use?
Answer
  • ELECT StudentCode as Code, RANK() OVER (ORDER BY AVG (Marks) DESC) AS Value FROM StudentMarks GROUP BY StudentCode
  • SELECT Id, Name, Marks, DENSE_RANK() OVER (ORDER BY Marks DESC) AS Rank FROM StudentMarks
  • SELECT StudentCode as Code, DENSE_RANK() OVER (ORDER BY AVG (Marks) DESC) AS Value FROM StudentMarks GROUP BY StudentCode
  • SELECT StudentCode as Code, NTILE (2) OVER (ORDER BY AVG (Marks) DESC) AS Value FROM StudentMarks GROUP BY StudentCode
  • SELECT StudentCode AS Code,Marks AS Value FROM ( SELECT StudentCode, Marks AS Marks, RANK() OVER (PARTITION BY SubjectCode ORDER BY Marks ASC) AS Rank FROM StudentMarks) tmp WHERE Rank = 1
  • SELECT StudentCode AS Code,Marks AS Value FROM ( SELECT StudentCode, Marks AS Marks, RANK() OVER (PARTITION BY SubjectCode ORDER BY Marks DESC) AS Rank FROM StudentMarks) tmp WHERE Rank = 1
  • SELECT StudentCode AS Code,Marks AS Value FROM ( SELECT StudentCode, Marks AS Marks, RANK () OVER (PARTITION BY StudentCode ORDER BY Marks ASC) AS Rank FROM StudentMarks) tmp WHERE Rank = 1
  • SELECT StudentCode AS Code,Marks AS Value FROM ( SELECT StudentCode, Marks AS Marks, RANXO OVER (PARTITION BY StudentCode ORDER BY Marks DESC) AS Rank FROM StudentMarks) tmp WHERE Rank = 1

Question 48

Question
You create a table that has the StudentCode, SubjectCode, and Marks columns to record mid-year marks for students. The table has marks obtained by 50 students for various subjects. You need to ensure that the following requirements are met: Students must be ranked based on their average marks. If one or more students have the same average, the same rank must be given to these students. Consecutive ranks must be skipped when the same rank is assigned. Which Transact-SQL query should you use?
Answer
  • SELECT StudentCode as Code, RANK() OVER(ORDER BY AVG (Marks) DESC) AS Value FROM StudentMarks GROUP BY StudentCode
  • SELECT Id, Name, Marks, DENSE_RANK() OVER(ORDER BY Marks DESC) AS Rank FROM StudentMarks
  • SELECT StudentCode as Code, DENSE_RANK() OVER(ORDER BY AVG (Marks) DESC) AS Value FROM StudentMarks GROUP BY StudentCode
  • SELECT StudentCode as Code, NTILE(2) OVER(ORDER BY AVG (Marks) DESC) AS Value FROM StudentMarks GROUP BY StudentCode
  • SELECT StudentCode AS Code,Marks AS Value FROM ( SELECT StudentCode, Marks AS Marks, RANK() OVER(PARTITION BY SubjectCode ORDER BY Marks ASC) AS Rank FROM StudentMarks) tmp WHERE Rank = 1
  • SELECT StudentCode AS Code,Marks AS Value FROM ( SELECT StudentCode, Marks AS Marks, RANK() OVER(PARTITION BY SubjectCode ORDER BY Marks DESC) AS Rank FROM StudentMarks) tmp WHERE Rank = 1
  • SELECT StudentCode AS Code,Marks AS Value FROM ( SELECT StudentCode, Marks AS Marks, RANK() OVER(PARTITION BY StudentCode ORDER BY Marks ASC) AS Rank FROM StudentMarks) tmp WHERE Rank = 1
  • SELECT StudentCode AS Code,Marks AS Value FROM ( SELECT StudentCode, Marks AS Marks, RANXO OVER(PARTITION BY StudentCode ORDER BY Marks DESC) AS Rank FROM StudentMarks) tmp WHERE Rank = 1

Question 49

Question
You create a table that has the StudentCode, SubjectCode, and Marks columns to record mid-year marks for students. The table has marks obtained by 50 students for various subjects. You need to retrieve the students who scored the highest marks for each subject along with the marks. Which Transact-SQL query should you use?
Answer
  • SELECT StudentCode as Code, RANK() OVER(ORDER BY AVG(Marks) DESC) AS Value FROM StudentMarks GROUP BY StudentCode
  • SELECT Id, Name, Marks, DENSE_RANK() OVER(ORDER BY Marks DESC) AS Rank FROM StudentMarks
  • SELECT StudentCode as Code, DENSE_RANK() OVER(ORDER BY AVG(Marks) DESC) AS Value FROM StudentMarks GROUP BY StudentCode
  • SELECT StudentCode as Code, NTILE(2) OVER(ORDER BY AVG(Marks) DESC) AS Value FROM StudentMarks GROUP BY StudentCode
  • SELECT StudentCode AS Code, Marks AS Value FROM ( SELECT StudentCode, Marks AS Marks, RANK() OVER(PARTITION BY SubjectCode ORDER BY Marks ASC) AS Rank FROM StudentMarks) tmp WHERE Rank = 1
  • SELECT StudentCode AS Code, Marks AS Value FROM ( SELECT StudentCode, Marks AS Marks, RANK() OVER(PARTITION BY SubjectCode ORDER BY Marks DESC) AS Rank FROM StudentMarks) tmp WHERE Rank = 1
  • SELECT StudentCode AS Code, Marks AS Value FROM ( SELECT StudentCode, Marks AS Marks, RANK() OVER(PARTITION BY StudentCode ORDER BY Marks ASC) AS Rank FROM StudentMarks) tmp WHERE Rank = 1
  • SELECT StudentCode AS Code, Marks AS Value FROM ( SELECT StudentCode, Marks AS Marks, RANXO OVER(PARTITION BY StudentCode ORDER BY Marks DESC) AS Rank FROM StudentMarks) tmp WHERE Rank = 1

Question 50

Question
You develop a database for a travel application. You need to design tables and other database objects. You create a stored procedure. You need to supply the stored procedure with multiple event names and their dates as parameters. What should you do?
Answer
  • Use the CAST function
  • Use the DATE data type.
  • Use the FORMAT function
  • Use an appropriate collation
  • Use a user-defined table type.
  • Use the VARBINARY data type
  • Use the DATETIME data type
  • Use the DATETIME2 data type

Question 51

Question
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 a large amount of memory is consumed by single-use dynamic queries. You need to reduce procedure cache usage from these statements without creating any additional indexes. What should you do?
Answer
  • Add a HASH hint to the query
  • Add an INCLUDE clause to the index.
  • Add a columnstore index to cover the query.
  • Enable the optimize for ad hoc workloads option.
  • Cover the unique clustered index with a columnstore index.
  • Include a SET FORCEPLAN ON statement before you run the query.
  • Include a SET STATISTICS PROFILE ON statement before you run the query.
  • Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query.
  • Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query.
  • Include a SET TRANSACTION ISOLATION LEVEL SERIALIZABLE statement before you run the query.

Question 52

Question
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?
Answer
  • SERIALIZABLE
  • SNAPSHOT
  • READ COMMITTED SNAPSHOT
  • REPEATABLE READ

Question 53

Question
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?
Answer
  • SELECT COUNT(*) FROM SalesOrders WHERE OrderTime = CONVERT(DATE, GETDATE())
  • SELECT COUNT(*) FROM SalesOrders WHERE OrderTime = GETDATE()
  • SELECT COUNT(*) FROM SalesOrders WHERE CONVERT(VARCHAR, OrderTime, 112) = CONVERT(VARCHAR, GETDATE(I, 112))
  • SELECT COUNT(*) FROM SalesOrders WHERE OrderTime >= CONVERT(DATE, GETDATE()) AND OrderTime < DATEADD(DAY, CONVERT(DATE, GETDATE()))

Question 54

Question
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 the country of residence. Which approach should you use?
Answer
  • a recursive stored procedure
  • Trigger
  • An UPDATE statement that includes CASE
  • Cursor
  • The foreach SQLCLR statement

Question 55

Question
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?
Answer
  • BEGIN TRANSACTION BEGIN TRY EXEC dbo.ModifyData COMMIT TRANSACTION END TRY BEGIN CATCH IF @@ TRANCOUNT = 0 ROLLBACK TRANSACTION; END CATCH
  • BEGIN TRANSACTION BEGIN TRY EXEC dbo.ModifyData COMMIT TRANSACTION END TRY BEGIN CATCH IF @@ERROR != 0 ROLLBACK TRANSACTION; THROW; END CATCH
  • BEGIN TRANSACTION BEGIN TRY EXEC dbo.ModifyData COMMIT TRANSACTION END TRY BEGIN CATCH IF @@TRANCOUNT = 0 ROLLBACK TRANSACTION; THROW; END CATCH
  • BEGIN TRANSACTION BEGIN TRY EXEC dbo.ModifyData COMMIT TRANSACTION END TRY BEGIN CATCH IF @@ERROR != 0 ROLLBACK TRANSACTION; END CATCH

Question 56

Question
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 during reads, the transaction experiences blocking from concurrent updates. You need to ensure that throughout the transaction the data maintains the original version. What should you do?
Answer
  • Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query.
  • Include a SET TRANSACTION ISOLATION LEVEL REPEATABLE READ statement before you run the query.
  • Add a HASH hint to the query.
  • Enable the optimize for ad hoc workloads option.
  • over the unique clustered index with a columnstore index.
  • Include a SET FORCEPLAN ON statement before you run the query.

Question 57

Question
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
  • Include a SET STATISTICS SHOWPLAN_XML ON statement before you run the query.
  • Include a SET STATISTICS PROFILE ON statement before you run the query.
  • Include a SET FORCEPLAN ON statement before you run the query.
  • Add a FORCESCAN hint to the Attach query.
  • Add an INCLUDE clause to the index.
  • Include a SET TRANSACTION ISOLATION LEVEL SNAPSHOT statement before you run the query.

Question 58

Question
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?
Answer
  • UPDATE Products SET Price = Price * 1.05 OUTPUT inserted.ProductCode, deleted.Price, inserted.Price INTO ProductsPriceLog(ProductCode, OldPrice, NewPrice)
  • UPDATE Products SET Price = Price * 1.05 OUTPUT inserted.ProductCode, inserted.Price, deleted.Price INTO ProductsPriceLog(ProductCode, OldPrice, NewPrice)
  • UPDATE Products SET Price = Price * 1.05 OUTPUT inserted.ProductCode, deleted.Price, inserted.Price * INTO ProductsPriceLog(ProductCode, OldPrice, NewPrice)
  • UPDATE Products SET Price = Price * 1.05 INSERT INTO ProductsPriceLog (ProductCode, CldPnce, NewPrice; SELECT ProductCode, Price, Price * 1.05 FROM Products

Question 59

Question
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?
Answer
  • SELECT Territory, Year, Profit, LEAD(Profit, 1, 0) OVER (PARTITION BY Territory ORDER BY Year) AS PrevProfit FROM Profits
  • SELECT Territory, Year, Profit, LAG(Profit, 1, 0) OVER (PARTITION BY Year ORDER BY Territory) AS PrevProfit FROM Profits
  • SELECT Territory, Year, Profit, LAG(Profit, 1, 0) OVER (PARTITION BY Territory ORDER BY Year) AS PrevProfit FROM Profits
  • SELECT Territory, Year, Profit, LEAD(Profit, 1, 0) OVER (PARTITION BY Year ORDER BY Territory) AS PrevProfit FROM Profits

Question 60

Question
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?
Answer
  • CROSS JOIN
  • CROSS APPLY
  • PIVOT
  • UNPIVOT

Question 61

Question
You administer a Microsoft SQL Server database that supports 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.)
Answer
  • SELECT CustomerID FROM Customer WHERE TerritoryID <> SOME(SELECT TerritoryID FROM Salesperson)
  • SELECT CustomerID FROM Customer WHERE TerritoryID <> ALL(SELECT TerritoryID FROM Salesperson)
  • SELECT CustomerID FROM Customer WHERE TerritoryID <> ANY(SELECT TerritoryID FROM Salesperson)
  • SELECT CustomerID FROM Customer WHERE TerritoryID NOT IN(SELECT TerritoryID FROM Salesperson)

Question 62

Question
You are a database developer of a Microsoft SQL Server 2012 database. You are designing a table that will store Customer data from different sources. The table will include a column that contains the CustomerID from the source system and a column that contains the SourceID. A sample of this data is as shown in the following table. You need to ensure that the table has no duplicate CustomerID within a SourceID. You also need to ensure that the data in the table is in the order of SourceID and then CustomerID. Which Transact- SQL statement should you use?
Answer
  • CREATE TABLE Customer (SourceID int NOT NULL IDENTITY, CustomerID int NOT NULL IDENTITY, CustomerName varchar(255) NOT NULL);
  • CREATE TABLE Customer (SourceID int NOT NULL, CustomerID int NOT NULL PRIMARY KEY CLUSTERED, CustomerName varchar(255) NOT NULL);
  • CREATE TABLE Customer (SourceID int NOT NULL PRIMARY KEY CLUSTERED, CustomerID int NOT NULL UNIQUE, CustomerName varchar(255) NOT NULL);
  • CREATE TABLE Customer (SourceID int NOT NULL, CustomerID int NOT NULL, CustomerName varchar(255) NOT NULL, CONSTRAINT PK_Customer PRIMARY KEY CLUSTERED (SourceID, CustomerID));

Question 63

Question
You develop a Microsoft SQL Server 2012 database that contains tables named Employee and Person. The tables have the following definitions: You create a view named VwEmployee as shown in the following Transact-SQL statement. Users are able to use single INSERT statements or INSERT…SELECT statements into this view. You need to ensure that users are able to use a single statement to insert records into both Employee and Person tables by using the VwEmployee view. Which Transact-SQL statement should you use?
Answer
  • CREATE TRIGGER TrgVwEmployee IN VwEmployee FOR INSERT AS BEGIN INSERT INTO Person(Id, FirstName,LastName) SELECT Id, FirstName, LastNameFROM inserted INSERT INTO Employee(PersonId, EmployeeNumber) SELECT Id,EmployeeNumber FROM inserted END
  • CREATE TRIGGER TrgVwEmployee IN VwEmployee INSTEAD OF AS BEGIN INSERT INTO Person(Id, FirstName,LastName) SELECT Id, FirstName, LastNameFROM inserted INSERT INTO Employee(PersonId, EmployeeNumber) SELECT Id,EmployeeNumber FROM inserted END
  • CREATE TRIGGER TrgVwEmployee N VwErr loyee INSTEAD OF INSERT AS BEGIN DECLARE @ID INT@F rstName NVARCHAR( 5) @LastName NVARCHAR( 5) @PersonID INT @EmployeeNumber NVARCR(15) SELECT @ID 1@F rstNameF rstName @LastNameLastName EmployeeNumberEmployeeNumber FROM serted INSERT INTO Person(Id F rstNameLastName) VALUES(@ID @F rstName@LastName) INSERT INTO Employee(Person EmployeeNumber) VALUES(@PersonID @EmployeeNumber End
  • CREATE TRIGGER TrgVwEmployee IN VwEmployee INSTEAD OF AS BEGIN INSERT INTO Person(Id, FirstName,LastName) SELECT Id, FirstName, LastNameFROM VwEmployee INSERT INTO Employee(PersonId, EmployeeNumber) SELECT Id,EmployeeNumber FROM VwEmployee END

Question 64

Question
You develop a Microsoft SQL Server 2012 server database that supports an application. The application contains a table that has the following definition: CREATE TABLE Inventory (ItemID int NOT NULL PRIMARY KEY, ItemsInStore int NOT NULL, ItemsInWarehouse int NOT NULL) You need to create a computed column that returns the sum total of the ItemsInStore and ItemsInWarehouse values for each row. Which Transact-SQL statement should you use?
Answer
  • ALTER TABLE Inventory ADD TotalItems AS ItemsInStore + ItemsInWarehouse
  • LTER TABLE Inventory ADD ItemsInStore – ItemsInWarehouse = TotalItems
  • ALTER TABLE Inventory ADD TotalItems = ItemsInStore + ItemsInWarehouse
  • ALTER TABLE Inventory ADD TotalItems AS SUM(ItemsInStore, ItemslnWarehouse);

Question 65

Question
You develop a Microsoft SQL Server 2012 database that contains a heap named OrdersHistorical. You write the following Transact-SQL query: INSERT INTO OrdersHistorical SELECT * FROM CompletedOrders You need to optimize transaction logging and locking for the statement. Which table hint should you use?
Answer
  • HOLDLOCK
  • ROWLOCK
  • XLOCK
  • UPDLOCK
  • TABLOCK

Question 66

Question
You develop a Microsoft SQL Server 2012 server database that supports an application. The application contains a table that has the following definition: CREATE TABLE Inventory ( ItemID int NOT NULL PRIMARY KEY, ItemsInStore int NOT NULL, ItemsInWarehouse int NOT NULL) You need to create a computed column that returns the sum total of the ItemsInStore and ItemsInWarehouse values for each row. The new column is expected to be queried heavily, and you need to be able to index the column. Which Transact-SQL statement should you use?
Answer
  • ALTER TABLE Inventory ADD TotalItems AS ItemslnStore + ItemsInWarehouse
  • ALTER TABLE Inventory ADD TotalItems AS ItemsInStore + ItemsInWarehouse PERSISTED
  • ALTER TABLE Inventory ADD TotalItems AS SUM(ItemsInStore, ItemsInWarehouse) PERSISTED
  • ALTER TABLE Inventory ADD TotalItems AS SUM(ItemsInStore, ItemsInWarehouse)
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