70-761 무료 덤프문제 온라인 액세스

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.

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 create a table by running the following Transact-SQL statement:

You are developing a report that aggregates customer data only for the year 2014. The report requires that the data be denormalized.
You need to return the data for the report.
Which Transact-SQL statement should you run?

• A.Option H
• B.Option D
• C.Option C
• D.Option G
• E.Option A
• F.Option E
• G.Option B
• H.Option F

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 table named Products that stores information about products your company sells. The table has a column named ListPrice that stores retail pricing information for products.
Some products are used only internally by the company. Records for these products are maintained in the Products table for inventory purposes. The price for each of these products is $0.00. Customers are not permitted to order these products.
You need to increase the list price for products that cost less than $100 by 10 percent. You must only increase pricing for products that customers are permitted to order.
Solution: You run the following Transact-SQL statement:

Does the solution meet the goal?

• A.Yes
• B.No

You are a database administrator for an online retail store. You create a table to track orders by running the following Transact-SQL statement:

You are developing a query that will be used as a JSON data source for a web application. The web application requires JSON in the following format:

정답:

Explanation


Box 1: Order.Date
In PATH mode, you can use the dot syntax - for example, 'Item.UnitPrice' - to format nested output.
Here's a sample query that uses PATH mode with the FOR JSON clause. The following example also uses the ROOT option to specify a named root element.

Box 2: JSON_VALUE(LineTotal)
JSON_VALUE extracts a scalar value from a JSON string.
Box 3: Order.Product
Box 4: FOR JSON PATH
When you use the FOR JSON clause, you can specify the structure of the JSON output explicitly, or let the structure of the SELECT statement determine the output.
To maintain full control over the format of the JSON output, use FOR JSON PATH. You can create wrapper objects and nest complex properties.
To format the JSON output automatically based on the structure of the SELECT statement, use FOR JSON AUTO.
Box 5: FOR JSON PATH, ROOT('ORDER)
Use the ROOT option to specify a named root element.
References:
https://docs.microsoft.com/en-us/sql/relational-databases/json/format-query-results-as-json-with-for-json-sql-serv
https://docs.microsoft.com/en-us/sql/t-sql/functions/json-value-transact-sql

You are a database administrator for an online retail store. You create a table to track orders by running the following Transact-SQL statement:

You need to create a report that includes the following information:
* Total sales for each year
* Total sales for each category
* Total sales for each category per year
How should you complete the Transact-SQL statement? To answer, drag the appropriate Transact-SQL segment 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.
NOTE: Each correct selection is worth one point.

정답:

Explanation

Box 1: GROUP BY
Box 2: CUBE
GROUP BY CUBE creates groups for all possible combinations of columns. For GROUP BY CUBE (a, b) the results has groups for unique values of (a, b), (NULL, b), (a, NULL), and (NULL, NULL).
Example: This code runs a GROUP BY CUBE operation on Country and Region.
SELECT Country, Region, SUM(Sales) AS TotalSales
FROM Sales
GROUP BY CUBE (Country, Region);
References: https://docs.microsoft.com/en-us/sql/t-sql/queries/select-group-by-transact-sql