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Q1. DRAG DROP

You have a database that includes the following tables:

You need to create a list of all customer IDs and the date of the last order that each customer placed. If the customer has not placed any orders, you must return the date January 1, 1900. The column names must be CustomerID and LastOrderDate.

Which four 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: SELECT..COALESCE…

The COALESCE function evaluates the arguments in order and returns the current value of the first expression that initially does not evaluate to NULL.

Box 2: ..LEFT OUTER JOIN..

The LEFT JOIN (LEFT OUTER JOIN) keyword returns all rows from the left table (table1), with the matching rows in the right table (table2). The result is NULL in the right side when there is no match. A customer might have no orders so the right table must be allowed have a NULL value.

Box 3: ON c.custid = o.custid

We JOIN on the custID column, which is available in both tables. Box 4: GROUP BY c.custid

References:

https://technet.microsoft.com/en-us/library/ms189499(v=sql.110).aspx http://www.w3schools.com/sql/sql_join_left.asp

Q2. 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 stored procedure that inserts data into the Customers table. The stored procedure must meet the following requirements:

- Data changes occur as a single unit of work.

- Data modifications that are successful are committed and a value of 0 is returned.

- Data modifications that are unsuccessful are rolled back. The exception severity level is set to 16 and a value of -1 is returned.

- The stored procedure uses a built-it scalar function to evaluate the current condition of data modifications.

- The entire unit of work is terminated and rolled back if a run-time error occurs during execution of the stored procedure.

How should complete the stored procedure definition? To answer, drag the appropriate Transact-SQL segments to the correct targets. Each Transact-SQL segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.

NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Explanation

Box 1: XACT_ABORT

XACT_ABORT specifies whether SQL Server automatically rolls back the current transaction when a Transact-SQL statement raises a run-time error.

When SET XACT_ABORT is ON, if a Transact-SQL statement raises a run-time error, the entire transaction is terminated and rolled back.

Box 2: COMMIT

Commit the transaction. Box 3: XACT_STATE

Box 4: ROLLBACK

Rollback the transaction

Box 5: THROW

THROW raises an exception and the severity is set to 16.

Requirement: Data modifications that are unsuccessful are rolled back. The exception severity level is set to 16 and a value of -1 is returned.

References:

https://msdn.microsoft.com/en-us/library/ms188792.aspx https://msdn.microsoft.com/en-us/library/ee677615.aspx

Q3. DRAG DROP

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 accepts a CustomerID as a parameter and returns the following information:

- all customer information for the customer

- the total number of orders for the customer

- the total price of all orders for the customer

- the average quantity of items per order

How should you complete the function definition? To answer, drag the appropriate Transact-SQL segment to the correct locations. Transact-SQL segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.

Answer:

Explanation:

Box1: RETURNS TABLE

The function should return the following information:

- all customer information for the customer

- the total number of orders for the customer

- the total price of all orders for the customer

- the average quantity of items per order

Box 2: COUNT

The function should return the total number of orders for the customer.

Box 3: SUM

The function should return the total price of all orders for the customer.

Box 3. AVG

The function should return the average quantity of items per order.

Box 4: GROUP BY

Need to use GROUP BY for the aggregate functions.

References: https://msdn.microsoft.com/en-us/library/ms186755.aspx

Q4. 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 database that stores sales and order information.

Users must be able to extract information from the tables on an ad hoc basis. They must also be able to reference the extracted information as a single table.

You need to implement a solution that allows users to retrieve the data required, based on variables defined at the time of the query.

What should you implement?

A. the COALESCE function

B. a view

C. a table-valued function

D. the TRY_PARSE function

E. a stored procedure

F. the ISNULL function

G. a scalar function

H. the TRY_CONVERT function

Answer: C

Explanation:

User-defined functions that return a table data type can be powerful alternatives to views. These functions are referred to as table-valued functions. A table-valued user-defined function can be used where table or view expressions are allowed in Transact-SQL

queries. While views are limited to a single SELECT statement, user-defined functions can contain additional statements that allow more powerful logic than is possible in views.

A table-valued user-defined function can also replace stored procedures that return a single result set.

References: https://technet.microsoft.com/en-us/library/ms191165(v=sql.105).aspx

Q5. HOTSPOT

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 owner.

- 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 owner.

- 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

Q6. DRAG DROP

You have a database that tracks orders and deliveries for customers in North America. System versioning is enabled for all tables. The database contains the Sales.Customers, Application.Cities, and Sales.CustomerCategories tables.

Details for the Sales.Customers table are shown in the following table:

Details for the Application.Cities table are shown in the following table:

Details for the Sales.CustomerCategories table are shown in the following table:

You are preparing a promotional mailing. The mailing must only be sent to customers in good standing that live in medium and large cities.

You need to write a query that returns all customers that are not on credit hold who live in cities with a population greater than 10,000.

How should you complete the Transact-SQL statement? To answer, drag the appropriate Transact-SQL segments to the correct locations. Each Transact-SQL segment may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.

Answer:

Explanation:

Box 1: IN (

The IN clause determines whether a specified value matches any value in a subquery or a list.

Syntax: test_expression [ NOT ] IN ( subquery | expression [ ,...n ] ) Where subquery

Is a subquery that has a result set of one column. This column must have the same data type as test_expression.

Box 2: WHERE

Box 3: AND [IsOnCreditHold] = 0

Box 4: )

References: https://msdn.microsoft.com/en-us/library/ms177682.aspx

Q7. HOTSPOT

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 owner.

- 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 owner.

- Return the value -1 for all other cases.

Box 3: RIGHT JOIN

References:

https://msdn.microsoft.com/en-us/library/ms190349.aspx http://www.w3schools.com/Sql/sql_join_right.asp

Q8. 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?

A. Yes

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

Q9. DRAG DROP

You need to create a stored procedure to update a table named Sales.Customers. The structure of the table is shown in the exhibit. (Click the exhibit button.)

The stored procedure must meet the following requirements:

- Accept two input parameters.

- Update the company name if the customer exists.

- Return a custom error message if the customer does not exist.

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.

NOTE: More than one order of answer choices is correct. You will receive credit for any of the correct orders you select.

Answer:

Q10. DRAG DROP

You query a database that includes two tables: Project and Task. The Project table includes the following columns:

Task level is defined using the following rules:

You need to determine the task level for each task in the hierarchy.

Answer:

Explanation:

Box 1: SELECT CAST (NULL AS INT) AS ParentTaskID, etc.

This statement selects all tasks with task level 0.

The ParentTaskID could be null so we should use CAST (NULL AS INT) AS ParentTaskID.

Box 2: UNION

We should use UNION and not UNION ALL as we do not went duplicate rows. UNION specifies that multiple result sets are to be combined and returned as a single result set.

Incorrect: Not UNION ALL: ALL incorporates all rows into the results. This includes duplicates. If not specified, duplicate rows are removed.

Box 3, Box 4, Box 5:

These statements select all tasks with task level >0.

References:

https://msdn.microsoft.com/en-us/library/ms180026.aspx

Q11. You have a database named MyDb. You run the following Transact-SQL statements:

A value of 1 in the IsActive column indicates that a user is active.

You need to create a count for active users in each role. If a role has no active users. you must display a zero as the active users count.

Which Transact-SQL statement should you run?

A. Option A

B. Option B

C. Option C

D. Option D

Answer: C

Q12. DRAG DROP

You query a database that includes two tables: Project and Task. The Project table includes the following columns:

Task level is defined using the following rules:

You need to determine the task level for each task in the hierarchy.

Answer:

Explanation:

Box 1: SELECT CAST (NULL AS INT) AS ParentTaskID, etc.

This statement selects all tasks with task level 0.

The ParentTaskID could be null so we should use CAST (NULL AS INT) AS ParentTaskID.

Box 2: UNION

We should use UNION and not UNION ALL as we do not went duplicate rows. UNION specifies that multiple result sets are to be combined and returned as a single result set.

Incorrect: Not UNION ALL: ALL incorporates all rows into the results. This includes duplicates. If not specified, duplicate rows are removed.

Box 3, Box 4, Box 5:

These statements select all tasks with task level >0.

References:

https://msdn.microsoft.com/en-us/library/ms180026.aspx

Q13. 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 database that contains tables named Customer_CRMSystem and Customer_HRSystem. Both tables use the following structure:

The tables include the following records: Customer_CRMSystem

Customer_HRSystem

Records that contain null values for CustomerCode can be uniquely identified by CustomerName.

You need to display a Cartesian product, combining both tables. Which Transact-SQL statement should you run?

A. Option A

B. Option B

C. Option C

D. Option D

E. Option E

F. Option F

G. Option G

H. Option H

Answer: G

Explanation:

A cross join that does not have a WHERE clause produces the Cartesian product of the tables involved in the join. The size of a Cartesian product result set is the number of rows in the first table multiplied by the number of rows in the second table.

References: https://technet.microsoft.com/en-us/library/ms190690(v=sql.105).aspx

Q14. You have a database that contains the following tables:

Customer

CustomerAudit

Where the value of the CustomerID column equals 3, you need to update the value of the CreditLimit column to 1000 for the customer. You must ensure that the change to the record in the Customer table is recorded on the CustomerAudit table.

Which Transact-SQL statement should you run?

A. Option A

B. Option B

C. Option C

D. Option D

Answer: D

Explanation:

The OUTPUT Clause returns information from, or expressions based on, each row affected by an INSERT, UPDATE, DELETE, or MERGE statement. These results can be returned to the processing application for use in such things as confirmation messages, archiving, and other such application requirements. The results can also be inserted into a table or table variable. Additionally, you can capture the results of an OUTPUT clause in a nested INSERT, UPDATE, DELETE, or MERGE statement, and insert those results into a target table or view.

Note: If the column modified by the .RITE clause is referenced in an OUTPUT clause, the complete value of the column, either the before image in deleted.column_name or the after image in inserted.column_name, is returned to the specified column in the table variable.

Q15. 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 database that is denormalized. Users make frequent changes to data in a primary table.

You need to ensure that users cannot change the tables directly, and that changes made to the primary table also update any related tables.

What should you implement?

A. the COALESCE function

B. a view

C. a table-valued function

D. the TRY_PARSE function

E. a stored procedure

F. the ISNULL function

G. a scalar function

H. the TRY_CONVERT function

Answer: B

Explanation:

Using an Indexed View would allow you to keep your base data in properly normalized tables and maintain data-integrity while giving you the denormalized "view" of that data.

References: http://stackoverflow.com/questions/4789091/updating-redundant-denormalized-data-automatically-in-sql-server

Q16. 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?

A. Yes

B. No

Answer: B

Explanation:

The variable max, in the line DECLARE @areaCode nvarchar(max), is not defined.

Q17. CORRECT TEXT

You work for an organization that monitors seismic activity around volcanos. You have a table named GroundSensors. The table stored data collected from seismic sensors. It includes the columns describes in the following table:

The database also contains a scalar value function named NearestMountain that returns the name of the mountain that is nearest to the sensor.

You need to create a query that shows the average of the normalized readings from the sensors for each mountain. The query must meet the following requirements:

- Include the average normalized readings and nearest mountain name.

- Exclude sensors for which no normalized reading exists.

- Exclude those sensors with value of zero for tremor.

Construct the query using the following guidelines:

- Use one part names to reference tables, columns and functions.

- Do not use parentheses unless required.

- Do not use aliases for column names and table names.

- Do not surround object names with square brackets.

Part of the correct Transact-SQL has been provided in the answer area below. Enter the code in the answer area that resolves the problem and meets the stated goals or

requirements. You can add code within the code that has been provided as well as below it.

Use the Check Syntax button to verify your work. Any syntax or spelling errors will be reported by line and character position.

Answer:

GROUP BY

Explanation:

GROUP BY is a SELECT statement clause that divides the query result into groups of rows, usually for the purpose of performing one or more aggregations on each group. The SELECT statement returns one row per group.

References: https://msdn.microsoft.com/en-us/library/ms177673.aspx

Q18. HOTSPOT

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 database object that calculates the total price of an order including the sales tax. The database object must meet the following requirements:

- Reduce the compilation cost of Transact-SQL code by caching the plans and reusing them for repeated execution.

- Return a value.

- Be callable from a SELECT statement.

How should you complete the Transact-SQL statements? To answer, select the appropriate Transact-SQL segments in the answer area.

Answer:

Explanation:

Box 1: FUNCTION

To be able to return a value we should use a scalar function.

CREATE FUNCTION creates a user-defined function in SQL Server and Azure SQL Database. The return value can either be a scalar (single) value or a table.

Box 2: RETURNS decimal(18,2)

Use the same data format as used in the UnitPrice column.

Box 3: BEGIN

Transact-SQL Scalar Function Syntax include the BEGIN ..END construct.

CREATE [ OR ALTER ] FUNCTION [ schema_name. ] function_name

( [ { @parameter_name [ AS ][ type_schema_name. ] parameter_data_type [ = default ] [ READONLY ] }

[ ,...n ]

]

)

RETURNS return_data_type

[ WITH <function_option> [ ,...n ] ] [ AS ]

BEGIN

function_body

RETURN scalar_expression END

[ ; ]

Box 4: @OrderPrice * @CalculatedTaxRate Calculate the price including tax.

Box 5: END

Transact-SQL Scalar Function Syntax include the BEGIN ..END construct. References: https://msdn.microsoft.com/en-us/library/ms186755.aspx

Q19. DRAG DROP

Details for the Sales.Customers table are shown in the following table:

Details for the Application.Cities table are shown in the following table:

Details for the Sales.CustomerCategories table are shown in the following table:

You are creating a report to show when the first customer account was opened in each city. The report contains a line chart with the following characteristics:

- The chart contains a data point for each city, with lines connecting the points.

- The X axis contains the position that the city occupies relative to other cities.

- The Y axis contains the date that the first account in any city was opened. An example chart is shown below for five cities:

During a sales promotion, customers from various cities open new accounts on the same date.

You need to write a query that returns the data for the chart.

NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Box 1: RANK() OVER

RANK returns the rank of each row within the partition of a result set. The rank of a row is one plus the number of ranks that come before the row in question.

ROW_NUMBER and RANK are similar. ROW_NUMBER numbers all rows sequentially (for example 1, 2, 3, 4, 5).

Q20. CORRECT TEXT

You create a table named Sales.Orders by running the following Transact-SQL statement:

You need to write a query that meets the following requirements:

- removes orders from the table that were placed before January 1, 2012

- uses the date format of YYYYMMDD

- ensures that the order has been shipped before deleting the record

Construct the query using the following guidelines:

- use one-part column names and two-part table names

- do not use functions

- do not surround object names with square brackets

- do not use variables

- do not use aliases for column names and table names

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

code in the answer area that resolves the problem and meets the stated goals or requirements. You can add code within the code that has been provided as well as below it.

Use the Check Syntax button to verify your work. Any syntax or spelling errors will be reported by line and character position.

Answer:

Pending

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