You develop 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 not include customers who have not placed any orders.
Which Transact-SQL query should you use?
A.
SELECT CustomerName, OrderDate
FROM Customers
LEFT OUTER JOIN Orders
ON Customers.CuscomerlD = Orders.CustomerId
B.
SELECT CustomerName, OrderDate
FROM Customers
RIGHT OUTER 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
JOIN Orders
ON Customers.CustomerId = Orders.CustomerId
Explanation:
http://msdn.microsoft.com/en-us/library/ms177634.aspx
D
A
I kept reading “Results MUST include customers who have not placed any orders”.
So it is D.