How to get words from field in SQL Server 2008 - sql

Question

I need to get the words in a text field and make some updates with those words, for example:
original data
words | other field | another field
---------------------------------------------
white | |
some words | |
some other w | |
desired result
words | other field | another field
---------------------------------------------
white | |
some | words |
some | other | w
How can I get this done?
EXTRA
I have this query where I get how many words a field have
select nombre,
LEN(words) - LEN(REPLACE(words, ' ', ''))+1 as palabras
from origen_informacion
where words <> ''

Answer 1

If you are trying to split a space separated string you can use this function:
create function fn_ParseCSVString
(
#CSVString varchar(8000) ,
#Delimiter varchar(10)
)
returns #tbl table (s varchar(1000))
as
/*
select * from dbo.fn_ParseCSVString ('qwe rew wer', ',c,')
*/
begin
declare #i int ,
#j int
select #i = 1
while #i <= len(#CSVString)
begin
select #j = charindex(#Delimiter, #CSVString, #i)
if #j = 0
begin
select #j = len(#CSVString) + 1
end
insert #tbl select substring(#CSVString, #i, #j - #i)
select #i = #j + len(#Delimiter)
end
return
end
GO
And pass ' ' as your delimiter.
select * from dbo.fn_ParseCSVString ('qwe rew wer', ' ')

Answer 2

In SQL Server 2008 you can use sys.dm_fts_parser to split a string into words. You could incorporate this with cross apply.
DECLARE #data TABLE
(
id INT IDENTITY(1,1) PRIMARY KEY,
words VARCHAR(1000),
other_field VARCHAR(1000),
another_field VARCHAR(1000)
)
INSERT INTO #data (words)
VALUES ('white'),('some words'),('some other w '),('This sentence has 5 words');
WITH splitData AS
(
SELECT
id ,
max(case when occurrence = 1 then display_term end) as word1,
max(case when occurrence = 2 then display_term end) as word2,
max(case when occurrence = 3 then display_term end) as word3,
max(case when occurrence = 4 then display_term end) as word4
FROM #data
CROSS APPLY sys.dm_fts_parser('"' + REPLACE(words,'"','') + '"',1033,NULL,0)
GROUP BY id
HAVING MAX(occurrence) <= 4
)
UPDATE #data
SET words = word1, other_field=word2, another_field=word3 + ISNULL(' ' + word4,'')
FROM #data d1
JOIN splitData sd ON d1.id = sd.id
SELECT * FROM #data
Output
id words other_field another_field
------ ------------------------------ --------------- --------------
1 white NULL NULL
2 some words NULL
3 some other w
4 This sentence has 5 words NULL NULL