Pairing words in sql server - sql-server

Question

Hi I have data like Below for example.
Table1:
id name
1 ab cd ef
2 john isner novak
3 roger federer murray
4 rafeal nadal grigor dmitrov
I need output as below
id pairs
1 ab cd
2 cd ef
3 john isner
4 isner novak
5 roger federer
6 federer murray
7 rafeal nadal
8 nadal grigor
9 grigor dmitrov
I have tried my best to do this and below is my code. I am new to functions and stored procedures in sql server so not familiar with it. Please help me with the code and also give me a brief about it.
CREATE TABLE YOURTABLE AS SELECT * FROM
(
SELECT PARTDESC,
CASE WHEN WORD2 IS NOT NULL THEN WORD1||' '||WORD2 END AS WORD1WORD2,
CASE WHEN WORD3 IS NOT NULL THEN WORD2||' '||WORD3 END AS WORD2WORD3,
CASE WHEN WORD3 IS NOT NULL THEN WORD3||' '||WORD4 END AS WORD3WORD4
FROM
(
SELECT PARTDESC,
REVERSE(PARSENAME(REPLACE(REVERSE(NAME), ' ', '.'), 1)) AS WORD1,
REVERSE(PARSENAME(REPLACE(REVERSE(NAME), ' ', '.'), 2)) AS WORD2,
REVERSE(PARSENAME(REPLACE(REVERSE(NAME), ' ', '.'), 3)) AS WORD3,
REVERSE(PARSENAME(REPLACE(REVERSE(NAME), ' ', '.'), 4)) AS WORD4
FROM
Table1
) A
) B
--------------------
DECLARE #colsUnpivot AS NVARCHAR(MAX),
#query AS NVARCHAR(MAX),
#colsPivot as NVARCHAR(MAX)
select #colsUnpivot = stuff((select ','+quotename(C.name)
from sys.columns as C
where C.object_id = object_id('yourtable') and
C.name <> 'PARTDESC'
for xml path('')), 1, 1, '')
select #colsPivot = STUFF((SELECT ','
+ quotename(PARTDESC)
from yourtable t
FOR XML PATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set #query
= 'select name, '+#colsPivot+'
from
(
select PARTDESC, name, value
from yourtable
unpivot
(
value for name in ('+#colsUnpivot+')
) unpiv
) src
pivot
(
max(value)
for PARTDESC in ('+#colsPivot+')
) piv'
exec(#query)
---------------
After running the above query i need to pick evry column---one column at a time and then append using union all..This is pretty much difficult task
Please help me through this...

Answer 1

It is possible to make this more simple and avoid dynamic sql:
DECLARE #t table(id int identity(1,1), name varchar(100))
INSERT #t VALUES
('ab cd ef'),
('john isner novak'),
('roger federer murray'),
('rafeal nadal grigor dmitrov')
;WITH CTE AS
(
SELECT row_number() over(order by id) rn,id,t.c.value('.', 'VARCHAR(2000)') splitname
FROM (
SELECT id, x = CAST('<t>' +
REPLACE(name, ' ', '</t><t>') + '</t>' AS XML)
FROM #t
) a
CROSS APPLY x.nodes('/t') t(c)
)
SELECT
row_number() over(order by cte1.id) id,
cte1.splitname + ' '+ cte2.splitname name
FROM CTE cte1
JOIN CTE cte2 ON cte1.id = cte2.id and cte1.rn + 1 = cte2.rn
Result:
id name
1 ab cd
2 cd ef
3 john isner
4 isner novak
5 roger federer
6 federer murray
7 rafeal nadal
8 nadal grigor
9 grigor dmitrov