Question

Customers
id,name,orderid
----------------------
1,Ted, 1
2,Jen, 2

Orders
id,prodname
----------------------
1,widgetA
1,widgetC
2,widgetB
2,widgetA


desired results
name, prodname
----------------------
Ted, widgetA
' ', widgetC
Jen, widgetB
' ', widgetA

Basically I don’t want to repeat the customer’s name if she has more than one product. Is there a way to do this?

Solution:

Select 
    (CASE WHEN myrow=1 THEN Name ELSE ' ' END) AS Name,
    product
From
(
    Select 
        ROW_NUMBER() OVER (PARTITION BY c.Name ORDER BY c.Name) AS myrow,     
        o.productname AS product 
    FROM 
        Customers c JOIN 
        Orders o ON c.orderid = o.id 
) T1

Order By Name

Answer 1

To answer your question, though there is a strong case to use a different solution; If you are using sql server take a look at “row_number()”. I don’t use SQL Server, but it might look something like this:

Select
    ROW_NUMBER() OVER (ORDER BY c.Name) AS myrow,
    if(myrow=1,name,' ') AS name,
    o.productname AS product
FROM
    Customers c JOIN
    Orders o ON c.orderid = o.id