Merge results to one column - sql

Question

I have the following query:
SELECT a.User1 as Employee
, isnull(sum(distinct b.Page_Count),0) AS Yesterday
, isnull(sum(distinct c.Page_Count),0) AS Today
, isnull(sum(distinct d.Page_Count),0) AS Week
, e.Material_Location as '(Yesterday)'
, f.Material_Location as '(Today)'
From TaskUser AS a
LEFT JOIN PaperMaterial AS b
ON b.Assigned_To = a.User1
AND b.Date_Assigned between ('06/09/2014') AND ('06/13/2014')
LEFT JOIN PaperMaterial AS c
ON c.Assigned_To = a.User1
AND c.Date_Assigned between ('06/13/2014') AND ('06/14/2014')
LEFT JOIN PaperMaterial AS d
ON d.Assigned_To = a.User1
AND d.Date_Assigned between ('06/09/2014') AND ('06/14/2014')
LEFT JOIN PaperMaterial AS e
ON e.Assigned_To = a.User1
AND e.Date_Assigned between ('06/12/2014') AND ('06/13/2014')
LEFT JOIN PaperMaterial AS f
ON f.Assigned_To = a.User1
AND f.Date_Assigned between ('06/13/2014') AND ('06/14/2014')
GROUP BY a.User1, e.Material_Location, f.Material_Location
Order By a.User1, e.Material_Location, f.Material_Location
If multiple records were input for the same user on the same day, I am getting unique rows for the same person. I only want one row per user with the e and f results merged to the same column.
Ie: Current Output =
Amy 0 640 640 NoTask Task
Amy 0 640 640 Task2 Task
Amy 0 640 640 Task3 Task4
Amy 0 640 640 Task1 NoTask
Requested output:
Amy 0 640 640 (NoTask, Task1, Task2, Task3) (NoTask, Task, Task4)

Answer 1

Here's a greatly over-simplified example of using stuff combined with a correlated subquery:
SQL Fiddle
I used your output as a table, more or less:
select
name,
stuff(
(
select cast(',' as varchar(max)) + mt.one
from MyTable mt
WHERE mt.name = t1.name
order by mt.name
for xml path('')
), 1, 1, '')
from mytable t1
group by name
We're using stuff to concatenate each value for the column I creatively named ONE for each NAME. The correlated subquery allows us to relate each row coming out of that to the corresponding row coming out of the main query.