How to combine data from two rows into one row

Question

I have the following sets of data. I want to find all the duplicate sets of field values. in the data below there is only one duplicate set: brenda, analyst, green.
DocID and Doc Seq combine to form the set key. FieldID I believe are consistent in that 1 is always name, 2 is job, 3 is favorite color etc. but there are up to 20 field IDs.
To tell you the truth, my client is a bit sketchy about the data and the values. I would like collapse the sets by getting all the field values into a single row. They could be in the same column, or in their own columns. This way I can then look for whatever
dups my customer seems to think that he has.
the first image is what i want (either in same column or in different columns. but they have to be in the order of the FieldID), the second is what i have. THANKS

Answer 1

CREATE TABLE #t (
c1 INT NOT NULL PRIMARY KEY,
c2 VARCHAR(50) NOT NULL
GO
INSERT INTO #t(c1, c2) VALUES(1, 'P1,P2,P3')
INSERT INTO #t(c1, c2) VALUES(2, 'P2,P3')
GO
-- Generate set of numbers
-- Idea from Itzik Ben-Gan
;WITH
L0 AS (SELECT 1 AS n UNION ALL SELECT 1),
L1 AS (SELECT 1 AS n FROM L0 AS a, L0 AS b),
L2 AS (SELECT 1 AS n FROM L1 AS a, L1 AS b),
L3 AS (SELECT 1 AS n FROM L2 AS a, L2 AS b),
L4 AS (SELECT 1 AS n FROM L3 AS a, L3 AS b),
Numbers AS (SELECT ROW_NUMBER() OVER(ORDER BY (SELECT 1)) AS Number FROM L4)
SELECT
t.c1,
t.c2,
SUBSTRING(',' + t.c2 + ',', Number + 1, CHARINDEX(',', ',' + t.c2 + ',', 
Number + 1) - Number - 1) AS Item,
ROW_NUMBER() OVER(PARTITION BY t.c1 ORDER BY n.Number) AS rn
FROM
#t AS t, Numbers AS n
WHERE
n.Number <= LEN(t.c2)
AND SUBSTRING(',' + t.c2 + ',', n.Number, 1) = ','
ORDER BY
t.c1, rn
GO
DROP TABLE #t
GO
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
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