SQL add STUFF function into this query - sql

Question

I have the following query
SELECT TOP 1000
o.BuyerEMail,
COUNT(*) HowMany,
o.Name, o2.OrderID
FROM
Orders o
JOIN
(SELECT
BuyerEmail, MAX(OrderDate) Latest
FROM Orders
GROUP BY BuyerEmail) l ON o.BuyerEmail = l.BuyerEmail
JOIN
Orders o2 ON l.BuyerEmail = o2.BuyerEmail
AND l.OrderDate = o2.OrderDate
WHERE
Pay != 'PayPal'
GROUP BY
o.BuyerEmail, o.Name, l.Latest
ORDER BY
It's just producing a report about customers and how many orders they have with us and the latest order.
What I want to add is a list of the products of their last order which are in lines table.
Lines table is linked to order table by OrderID.
I was looking for something like:
JOIN
(SELECT
OrderID,
STUFF((SELECT ', ' + li.Code
FROM tblLines li
WHERE li.OrderID = o2.OrderID
FOR XML PATH ('')), 1, 1, '') AS [Codes]
GROUP BY
OrderID, Code
So the final table displays as
BuyerEmail | HowMany | Name | Latest | Codes
---------------------------------------------
Bob#bob | 4 | bob | 10000 | 123,10,201231

Answer 1

As you posted the query from another question (SQL most recent order? MS SQL), I will use my answer as it is cleaner than the above query:
SELECT o.*
, OrderID as LastOrderID
FROM (
SELECT BuyerEMail
, Name
, COUNT(*) as TotalOrders
FROM Orders
WHERE Pay != 'PayPal'
GROUP BY BuyerEmail, Name
) o
CROSS APPLY (
SELECT TOP 1 OrderID, OrderDate
FROM Orders s
WHERE s.BuyerEmail = o.BuyerEmail
ORDER BY OrderDate DESC
) ca
You posted a good example, it wasn't complete thou. You would need the following xmlpath query:
SELECT OrderID
, Codes
FROM tblLines r1
CROSS APPLY (
SELECT
STUFF((SELECT ',' + CAST(Code AS NVARCHAR)
FROM tblLines r2
WHERE r2.OrderID = r1.OrderID
GROUP BY OrderID, Code
ORDER BY Code
FOR XML PATH (''), TYPE)
.value('.', 'varchar(max)')
, 1, 1, '')) OrderLines(Codes)
GROUP BY OrderID, OrderList
Add it to the previous statement with a simple join:
SELECT o.BuyerEMail
,o.Name
,o.TotalOrders
, OrderID as LastOrderID
, c.Codes
FROM (
SELECT BuyerEMail
, Name
, COUNT(*) as TotalOrders
FROM Orders
WHERE Pay != 'PayPal'
GROUP BY BuyerEmail, Name
) o
CROSS APPLY (
SELECT TOP 1 OrderID, OrderDate
FROM Orders s
WHERE s.BuyerEmail = o.BuyerEmail
ORDER BY OrderDate DESC
) ca
INNER JOIN (
SELECT OrderID
, Codes
FROM tblLines r1
CROSS APPLY (
SELECT
STUFF((SELECT ',' + CAST(Code AS NVARCHAR)
FROM tblLines r2
WHERE r2.OrderID = r1.OrderID
GROUP BY OrderID, Code
ORDER BY Code
FOR XML PATH (''), TYPE)
.value('.', 'varchar(max)')
, 1, 1, '')) OrderLines(Codes)
GROUP BY OrderID, OrderList
) c
ON ca.OrderID = c.OrderID

Answer 2

SELECT TOP 1000
o.BuyerEMail,
COUNT(*) HowMany,
o.Name, l.Latest,
STUFF((SELECT ', ' + li.Code
FROM tblLines li
WHERE li.OrderID = o2.OrderID
FOR XML PATH ('')), 1, 1, '') AS [Codes]
FROM
Orders o
JOIN
(SELECT
BuyerEmail, MAX(OrderDate) Latest
FROM Orders
GROUP BY BuyerEmail) l ON o.BuyerEmail = l.BuyerEmail
JOIN
Orders o2 ON l.BuyerEmail = o2.BuyerEmail
AND l.OrderDate = o2.OrderDate
WHERE
Pay != 'PayPal'
GROUP BY
o.BuyerEmail, o.Name, l.Latest
ORDER BY