Consolidate rows of data in SQL Server - sql-server

Question

I have multiple rows of order data which i need to consolidate in one row per part.
An example is as follows:
OrderNum PartNum Qty
-------------------------------
1 24 2
2 25 10
3 24 5
4 24 10
This then needs to be consolidated into:
OrderNum PartNum Qty
-------------------------------
1, 3, 4 24 17
2 25 10
Does anybody have any ideas how I can do this?
I have had a look around online but cannot find a solution to this use case.
Many thanks in advance,

Answer 1

Try this
SELECT STUFF((SELECT ',' + CAST(OrderNum AS VARCHAR(4))
FROM mytable AS s
WHERE s.PartNum = t.PartNum
FOR XML PATH('')), 1, 1, '') AS OrderNum
PartNum, SUM(Qty)
FROM mytable AS t
GROUP BY PartNum

Answer 2

This can be done by grouping on PartNum, sum the quantities with SUM() and concatenating strings using FOR XML PATH('') in a correlated subquery. Using FOR XML PATH('') to concatenate string is explained in this answer on SO.
DECLARE #t TABLE(OrderNum INT, PartNum INT, Qty INT);
INSERT INTO #t(OrderNum,PartNum,Qty)
VALUES(1,24,2),(2,25,10),(3,24,5),(4,24,10);
SELECT
OrderNum=STUFF((
SELECT
','+CAST(i.OrderNum AS VARCHAR)
FROM
#t AS i
WHERE
i.PartNum=o.PartNum
FOR XML
PATH(''), TYPE
).value('.[1]','VARCHAR(MAX)'),1,1,''),
o.PartNum,
Qty=SUM(o.Qty)
FROM
#t AS o
GROUP BY
o.PartNum;
Result:
OrderNum | PartNum | Qty
------------------------
1,3,4 | 24 | 17
2 | 25 | 10

Answer 3

SQL Server 2016 added the STRING_AGG function.
In your case, you could write
select STRING_ACC(OrderId,','),PartNum, Sum(Qty)
from MyTable
Group by PartNum
For earlier versions you'd have to use one of the techniques described by Aaron Bertrand in Grouped Concatenation in SQL Server. The fastest is to use a SQLCLR method. Next comes the FOR XML method posted by #GiorgosBetsos

Answer 4

DECLARE #t TABLE(OrderNum INT, PartNum INT, Qty INT)
INSERT INTO #t VALUES(1 , 24 , 2)
INSERT INTO #t VALUES(2 , 25 , 10)
INSERT INTO #t VALUES(3 , 24 , 5)
INSERT INTO #t VALUES(4 , 24 , 10)
SELECT OrderNum =
STUFF((SELECT ', ' + CONVERT(VARCHAR(50),OrderNum)
FROM #t b
WHERE b.PartNum = a.PartNum
FOR XML PATH('')), 1, 2, ''),
PartNum,
SUM(Qty) as Qty
FROM #t a
GROUP BY PartNum
Result

Answer 5

There are many ways to do this.
create table tablename (Name varchar(100), Rnk int)
Insert into tablename values
('Northshore', 1),
('F3', 2),
('Borderline', 3),
('Mattoon',3),
('Vinemane',5),
('Arizona',5),
('WestShore', 5),
('Schumburg', 5),
('Wilson',5)
--Method2
Select distinct
names= REPLACE(
(
Select a.Name as [data()]
From tablename A
Where A.Rnk = b.Rnk
Order by a.Name
FOR XML PATH ('') ), ' ', ',') ,Rnk
From tablename B Order by Rnk
OR
CREATE TABLE TestTable (ID INT, Col VARCHAR(4))
GO
INSERT INTO TestTable (ID, Col)
SELECT 1, 'A'
UNION ALL
SELECT 1, 'B'
UNION ALL
SELECT 1, 'C'
UNION ALL
SELECT 2, 'A'
UNION ALL
SELECT 2, 'B'
UNION ALL
SELECT 2, 'C'
UNION ALL
SELECT 2, 'D'
UNION ALL
SELECT 2, 'E'
GO
SELECT *
FROM TestTable
GO
-- Get CSV values
SELECT t.ID, STUFF(
(SELECT ',' + s.Col
FROM TestTable s
WHERE s.ID = t.ID
FOR XML PATH('')),1,1,'') AS CSV
FROM TestTable AS t
GROUP BY t.ID
GO
OR
CREATE TABLE #mable(mid INT, token nvarchar(16))
INSERT INTO #mable VALUES (0, 'foo')
INSERT INTO #mable VALUES(0, 'goo')
INSERT INTO #mable VALUES(1, 'hoo')
INSERT INTO #mable VALUES(1, 'moo')
SELECT m1.mid,
( SELECT m2.token + ','
FROM #mable m2
WHERE m2.mid = m1.mid
ORDER BY token
FOR XML PATH('') ) AS token
FROM #mable m1
GROUP BY m1.mid ;
Also, see this.
http://blog.sqlauthority.com/2009/11/25/sql-server-comma-separated-values-csv-from-table-column/