prathibha_aviator (10/15/2012)
For the same data Provide the SQL statement that would return every CustomerName and the count of orders they have ever placed.I have tried using the below code
select Customer.CustomerName, Count(CustomerOrders.customerID) from Customer JOIN CustomerOrders ON customer.customerID=customerorders.CustomerID
giving an error:
Msg 8120, Level 16, State 1, Line 1
Column 'Customer.CustomerName' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.
The error message tells you EXACTLY what the problem is. You need to use some grouping when aggregating data.
http://msdn.microsoft.com/en-us/library/ms177673%28v=sql.105%29.aspx
--edit--
I did not provide an answer because this scream of homework. If I provide you an answer you do not learn the topic.
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