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, CrderDate
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
Explanation:
http://msdn.microsoft.com/en-us/library/ms177634.aspx
Answer is D.
D
answer is D.
D
D
D.
SELECT c.CustomerName, o.OrderDate
FROM Sales.Customers c
LEFT JOIN Sales.Orders o
ON o.CustomerID = c.CustomerID