You have a Microsoft SQL Server 2012 database that contains tables named Customers and Orders.
The tables are related by a column named CustomerID.
You need to create a query that meets the following requirements:
• Returns the CustomerName for all customers and the OrderDate for any orders that they have placed.
• Results must include customers who have not placed any orders.
Which Transact-SQL query should you use?
A . SELECT CustomerName, OrderDate
FROM Customers
RIGHT OUTER JOIN Orders
ON Customers.CustomerID = Orders.CustomerID
B . SELECT CustomerName, OrderDate
FROM Customers
JOIN Orders
ON Customers.CustomerID = Orders.CustomerID
C . SELECT CustomerName, OrderDate
FROM Customers
CROSS JOIN Orders
ON Customers.CustomerID = Orders.CustomerID
D . SELECT CustomerName, OrderDate
FROM Customers
LEFT OUTER JOIN Orders
ON Customers.CustomerID = Orders.CustomerID
Answer: D
Explanation:
Reference: http://msdn.microsoft.com/en-us/library/ms177634.aspx