Microsoftの70-761 キャリアパスの最高の問題集
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NO.1 DRAG DROP
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 are developing a database to track customer orders. The database contains the following tables:
Sales.Customers, Sales.Orders, and Sales.OrderLines. The following table describes the columns in
Sales.Customers.
The following table describes the columns in Sales.Orders.
The following table describes the columns in Sales.OrderLines.
You need to create a function that calculates the highest tax rate charged for an item in a specific
order.
Which five Transact-SQL segments should you use to develop the solution? To answer, move the
appropriate Transact-SQL segments from the list of Transact-SQL segments to the answer area and
arrange them in the correct order.
Answer:
Explanation:
Box 1: CREATE FUNCTION...@OrderID
Include definition for the ...@OrderID parameter.
Box 2: RETURNS decimal(18,2)
The function is defined to return a scalar value.
Box 3: AS BEGIN ...
Declare the local variables of the function.
Box 4: SET @CalculatedTaxRate = (..
Calculate the tax rate.
Box 5: RETURN @CalculatedRate END
Return a scalar value.
References: https://msdn.microsoft.com/en-us/library/ms186755.aspx
NO.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 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?
A. Yes
B. No
Answer: B
70-761 最新
Explanation:
As there are two separate INSERT INTO statements we cannot ensure that both or neither records is
inserted.
NO.3 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 AuditTrail that tracks modifications to data in other tables. The
AuditTrail table is updated by many processes. Data input into AuditTrail may contain improperly
formatted date time values. You implement a process that retrieves data from the various columns in
AuditTrail, but sometimes the process throws an error when it is unable to convert the data into valid
date time values.
You need to convert the data into a valid date time value using the en-US format culture code. If the
conversion fails, a null value must be returned in the column output. The conversion process must
not throw an error.
What should you implement?
A. a view
B. a stored procedure
C. the TRY_CONVERT function
D. a table-valued function
E. the TRY_PARSE function
F. a scalar function
G. the COALESCE function
H. the ISNULL function
Answer: C
70-761 問題数
Explanation:
A TRY_CONVERT function returns a value cast to the specified data type if the cast succeeds;
otherwise, returns null.
References: https://msdn.microsoft.com/en-us/library/hh230993.aspx
NO.4 HOTSPOT
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 need to identify the owner of each task by using the following rules:
- Return each task's owner if the task has an owner.
- If a task has no owner, but is associated with a project that has an owner, return the project's owne
r.
- Return the value -1 for all other cases.
How should you complete the Transact-SQL statement? To answer, select the appropriate
Transact-SQL segments in the answer area.
Answer:
Explanation:
Box 1: COALESCE
COALESCE evaluates the arguments in order and returns the current value of the first expression that
initially does not evaluate to NULL.
Box 2: T.UserID, p.UserID, -1
- Return each task's owner if the task has an owner.
- If a task has no owner, but is associated with a project that has an owner, return the project's owne
r.
- Return the value -1 for all other cases.
Box 3: RIGHT JOIN
The RIGHT JOIN keyword returns all rows from the right table (table2), with the matching rows in the
left table (table1). The result is NULL in the left side when there is no match.
Here the right side could be NULL as the projectID of the task could be NULL.
References:
https://msdn.microsoft.com/en-us/library/ms190349.aspx
http://www.w3schools.com/Sql/sql_join_right.asp
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