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: Projectand Task.

The Project table includes the following columns:

The Task 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-1for all other cases.

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

Reveal Solution Hide Solution

Correct 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

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 query a database that includes two tables: Project and Task.

The Project table includes the following columns:

The Task 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.

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.

Reveal Solution Hide Solution

Correct Answer:

Explanation:

Box 1: With TaskWithLevel (ParentTaskID, TaskID, TaskName, TaskLevel) as {

WITH common_table_expression specifies a temporary named result set, known as a common table expression (CTE).

Box 2: 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 3: UNION ALL

In a Recursive CTE Union ALL must be used.

Box 4: SELECT R.TaskId as ParentTaskId,t.TaskId,t.TaskName, etc

Box 5: )

SELECT * FROM TaskWithLevel

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

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 query a database that includes two tables: Project and Task.

The Project table includes the following columns:

The Task table includes the following columns:

When running an operation, you updated a column named EndTime for several records in the Project table, but updates to the corresponding task records in the Task table failed.

You need to synchronize the value of the EndTime column in the Task table with the value of the EndTime column in the project table.

The solution must meet the following requirements:

– If the EndTime column has a value, make no changes to the record.

– If the value of the EndTime column is null and the corresponding project record is marked as completed, update the record with the project finish time.

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.

Reveal Solution Hide Solution

Correct Answer:

Explanation:

Box 1: UPDATE T SET T.EndTime = P.EndTime

We are updating the EndTime column in the Task table.

Box 2: FROM Task AS T

Where are updating the task table.

Box 3: INNER JOIN Project AS P on T.ProjectID = P.ProjectID

We join with the Project table (on the ProjectID columnID column).

Box 4: WHERE P.EndTime is NOT NULL AND T.EndTime is NULL

We select the columns in the Task Table where the EndTime column in the Project table has a value (NOT NULL), but where it is NULL in the Task Table.

References: https://msdn.microsoft.com/en-us/library/ms177523.aspx

You need to create a database object that meets the following requirements:

– accepts a product identified as input

– calculates the total quantity of a specific product, including quantity on hand and quantity on order

– caches and reuses execution plans

– returns a value

– can be called from within a SELECT statement

– can be used in a JOIN clause

What should you create?

Reveal Solution Hide Solution

HOTSPOT

You have the following stored procedure:

You run the following Transact-SQL statements:

What is the result of each Transact-SQL statement? To answer, select the appropriate options in the answer area.

Reveal Solution Hide Solution

Correct Answer:

Explanation:

Box 1: All transactions are rolled back.

The first IF-statement, IF @CODE = ‘C2323’ AND @ApplicationID = 1, will be true, an error will be raised, the error will be caught in the CATCH block, and the only transaction that has been started will be rolled back.

Box 2: All transactions are rolled back.

When nesting transactions, this same statement rolls back all inner transactions to the outermost BEGIN TRANSACTION statement.

References: https://docs.microsoft.com/en-us/sql/t-sql/language-elements/rollback-transaction-transact-sql

HOTSPOT

You need to develop a Transact-SQL statement that meets the following requirements:

– The statement must return a custom error when there are problems updating a table.

– The error number must be value50555.

– The error severity level must be14.

– A Microsoft SQL Server alert must be triggered when the error condition occurs.

Which Transact-SQL segment should you use for each requirement? To answer, select the appropriate Transact-SQL segments in the answer area.

Reveal Solution Hide Solution

Correct Answer:

Explanation:

Box 1: TRY…CATCH

The TRY…CATCH Transact-SQL construct implements error handling for Transact-SQL that is similar to the exception handling in the Microsoft Visual C# and Microsoft Visual C++ languages. A group of Transact-SQL statements can be enclosed in a TRY block. If an error occurs in the TRY block, control is passed to another group of statements that is enclosed in a CATCH block.

Box 2: RAISERROR (50555, 14, 1 ‘The update failed.") WITH LOG

We must use RAISERROR to be able to specify the required severity level of 14, and we should also use the LOG option, which Logs the error in the error log and the application log for the instance of the Microsoft SQL Server Database Engine, as this enable a MS MS SQL SERVER alert to be triggered.

Note: RAISERROR generates an error message and initiates error processing for the session. RAISERROR can either reference a user-defined message stored in the sys.messages catalog view or build a message dynamically. The message is returned as a server error message to the calling application or to an associated CATCH block of a TRY…CATCH construct.

Incorrect Answers:

Not THROW: THROW does not have a severity parameter.

References:

https://msdn.microsoft.com/en-us/library/ms175976.aspx

https://msdn.microsoft.com/en-us/library/ms178592.aspx

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.

Reveal Solution Hide Solution

Correct Answer:

You need to create an indexed view that requires logic statements to manipulate the data that the view displays.

Which two database objects should you use? Each correct answer presents a complete solution.

Reveal Solution Hide Solution

DRAG DROP

You have two tables named UserLogin and Employee respectively.

You need to create a Transact-SQL script that meets the following requirements:

– The script must update the value of the IsDeleted column for the UserLogin table to 1 if the value of the Id column for the User Login table is equal to 1.

– The script must update the value of the IsDeleted column of the Employee table to 1 if the value of the Id column is equal to 1 for the Employee table when an update to the User Login table throws an error.

– The error message "No tables updated!" must be produced when an update to the Employee table throws an error.

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 answerarea and arrange them in the correct order.

Reveal Solution Hide Solution

Correct Answer:

Explanation:

A TRY block must be immediately followed by an associated CATCH block. Including any other statements between the END TRY and BEGIN CATCH statements generates a syntax error.

Note: END TRY statements are missing in the options, which makes this question confusing.

References: https://msdn.microsoft.com/en-us/library/ms175976.aspx

SIMULATION

You work for an organization that monitors seismic activity around volcanos. You have a table named GroundSensors. The table stores data collected from seismic sensors that measure earthquake activity.

It includes the columns described 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.

Reveal Solution Hide Solution