Microsoft 70-761
Querying Data with Transact-SQL
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Question 1
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section. You will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You create a table named Products by running the following Transact-SQL statement:
- You have the following stored procedure:
- You need to modify the stored procedure to meet the following new requirements:
- Insert product records as a single unit of work.
- Return error number 51000 when a product fails to insert into the database.
- If a product record insert operation fails, the product information must not be permanently written to the database.
Solution: You run the following Transact-SQL statement:
- Does the solution meet the goal?
Options:
A. Yes
B. No Answer: B
Explanation:
With X_ABORT ON the INSERT INTO statement and the transaction will be rolled back when an error is raised, it would then not be possible to ROLLBACK it again in the IF XACT_STATE() <> O ROLLACK
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TRANSACTION statement.
Note: A transaction is correctly defined for the INSERT INTO ..VALUES statement, and if there is an error in the transaction it will be caughtant he transaction will be rolled back, finally an error 51000 will be raised. Note: When SET XACT_ABORT is ON, if a Transact-SQL statement raises a run-time error, the entire transaction is terminated and rolled back.
XACT_STATE is a scalar function thatreports the user transaction state of a current running request. XACT_STATE indicates whether the request has an active user transaction, and whether the transaction is capable of being committed.
The states of XACT_STATE are:
- 0 There is no active user transaction for the current request.
- 1 The current request has an active user transaction. The request can perform any actions, including writing data and committing the transaction.
- 2 The current request has an active user transaction, but an error hasoccurred that has caused the transaction to be classified as an uncommittable transaction.
References:
https://msdn.microsoft.com/en-us/library/ms188792.aspx https://msdn.microsoft.com/en-us/library/ms189797.aspx
Question 2
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section. You will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You create a table named Products by running the following Transact-SQL statement:
- You have the following stored procedure:
- You need to modify the stored procedure to meet the following new requirements:
- Insert product records as a single unit of work.
- Return error number 51000 when a product fails to insert into the database.
- If a product record insert operation fails, the product information must not be permanently written to the database.
Solution: You run the following Transact-SQL statement:
- Does the solution meet the goal?
Options:
A. Yes
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Microsoft 70-761
B. No
Answer: B
Explanation:
A transaction is correctly defined for the INSERT INTO ..VALUES statement, and if there is an error in the transaction it will be caught ant he transaction will be rolled back. However, error number 51000 will not be returned, as it is only used in an IF @ERROR = 51000 statement.
Note: @@TRANCOUNT returns the number of BEGIN TRANSACTION statements that have occurred on the current connection.
References: https://msdn.microsoft.com/en-us/library/ms187967.aspx
Question 3
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section. You will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You create a table named Products by running the following Transact-SQL statement:
- You have the following stored procedure:
- You need to modify the stored procedure to meet the following new requirements:
- Insert product records as a single unit of work.
- Return error number 51000 when a product fails to insert into the database.
- If a product record insert operation fails, the product information must not be permanently written to the database.
Solution: You run the following Transact-SQL statement:
- Does the solution meet the goal?
Options:
A. Yes
B. No Answer: A
Explanation:
If the INSERT INTO statement raises an error, the statement will be caught and an error 51000 will be thrown. In this case no records will have been inserted.
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Microsoft 70-761
Note:
You can implement error handling for the INSERT statement by specifying the statement in a TRY"¦ CATCH construct.
If an INSERT statement violates a constraint or rule, or if it has a value incompatible with the data type of the column, the statement fails and an error message is returned.
References: https://msdn.microsoft.com/en-us/library/ms174335.aspx
Question 4
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section. You will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You create a table named Customer by running the following Transact-SQL statement:
- You must insert the following data into the Customer table:
- You need to ensure that both records are inserted or neither record is inserted. Solution: You run the following Transact-SQL statement:
- Does the solution meet the goal?
Options:
A. Yes
B. No Answer: B
Explanation:
As there are two separate INSERT INTO statements we cannot ensure that both or neither records are inserted.
Question 5
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section. You will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You create a table named Customer by running the following Transact-SQL statement:
- You must insert the following data into the Customer table:
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Microsoft 70-761
- You need to ensure that both records are inserted or neither record is inserted. Solution: You run the following Transact-SQL statement:
- Does the solution meet the goal?
Options:
A. Yes
B. No Answer: B
Explanation:
As there are two separate INSERT INTO statements we cannot ensure that both or neither records are inserted.
Question 6
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section. You will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You have a database that tracks orders and deliveries for customers in North America. The database contains the following tables:
Sales.Customers
- Application.Cities
- Sales.CustomerCategories
- The company's development team is designing a customer directory application. The application must list customers by the area code of their phone number. The area code is defined as the first three characters of the phone number.
The main page of the application will be based on an indexed view that contains the area and phone number for all customers.
You need to return the area code from the PhoneNumber field. Solution: You run the following Transact-SQL statement:
- Does the solution meet the goal?
Options:
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Microsoft 70-761
A. Yes
B. No Answer: B
Explanation:
The function should return nvarchar(10) and not a TABLE.
References: https://sqlstudies.com/2014/08/06/schemabinding-what-why/
Question 7
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section. You will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You have a database that tracks orders and deliveries for customers in North America. The database contains the following tables:
Sales.Customers
- Application.Cities
- Sales.CustomerCategories
- The company's development team is designing a customer directory application. The application must list customers by the area code of their phone number. The area code is defined as the first three characters of the phone number.
The main page of the application will be based on an indexed view that contains the area and phone number for all customers.
You need to return the area code from the PhoneNumber field. Solution: You run the following Transact-SQL statement:
- Does the solution meet the goal?
Options:
A. Yes
B. No Answer: B
Explanation:
As the result of the function will be used in an indexed view we should use schemabinding. References: https://sqlstudies.com/2014/08/06/schemabinding-what-why/
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Microsoft 70-761
Question 8
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
After you answer a question in this section. You will NOT be able to return to it. As a result, these questions will not appear in the review screen.
You have a database that tracks orders and deliveries for customers in North America. The database contains the following tables:
Sales.Customers
- Application.Cities
- Sales.CustomerCategories
- The company's development team is designing a customer directory application. The application must list customers by the area code of their phone number. The area code is defined as the first three characters of the phone number.
The main page of the application will be based on an indexed view that contains the area and phone number for all customers.
You need to return the area code from the PhoneNumber field. Solution: You run the following Transact-SQL statement:
- Does the solution meet the goal?
Options:
A. Yes
B. No
Answer: B
Explanation:
We need SELECT TOP 1 @areacode =.. to ensure that only one value is returned.
Question 9
Note: This question is part of a series of questions that use the same scenario. For your
convenience, the scenario is repeated in each question. Each question presents a different goal
and answer choices, but the text of the scenario is exactly the same in each question in this series.
You query a database that includes two tables: Project and Task. The Project table includes the following columns:
--
You plan to run the following query to update tasks that are not yet started:
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UPDATE Task SET StartTime = GETDATE() WHERE StartTime IS NULL
You need to return the total count of tasks that are impacted by this UPDATE operation, but are not associated with a project.
What set of Transact-SQL statements should you run?
Options:
A. - B.
- C.
- D.
- A. Option A B. Option B C. Option C D. Option D Answer: B
Explanation:
The WHERE clause of the third line should be WHERE ProjectID IS NULL, as we want to count the tasks that are not associated with a project.
Question 10
Note: This question is part of a series of questions that use the same or similar answer choices. An answer choice may be correct for more than one question in the series. Each question is independent of the other questions in this series. Information and details provided in a question apply only to that question.
You have a table named Products that contains information about the products that your company sells. The table contains many columns that do not always contain values.
You need to implement an ANSI standard method to convert the NULL values in the query output to the phrase "Not Applicable"?.
What should you implement?
Options:
A. the COALESCE function B. a view
C. a table-valued function
D. the TRY_PARSE function
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Microsoft 70-761
E. a stored procedure
F. the ISNULL function
G. a scalar function
H. the TRY_CONVERT function Answer: F
Explanation:
The ISNULL function replaces NULL with the specified replacement value. References: https://msdn.microsoft.com/en-us/library/ms184325.aspx
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