Find Specific Strings in another String

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Find Specific Strings in another String

Author

Topic

mathmath
Starting Member

13 Posts

Posted - 2009-06-24 : 12:40:10

Hi everyone,

I am working on a project where i have encounter such problems:

Data samples:
LA-1-2,
LA-1-2-33,
LA-1-22-333-4444,
LA-2-3,
LA-12-34,
LA-123-45-67
..
with upto 8 dashes.

Objective:
I need to find the values behind each dashes.
[e.g LA-1-2-33 will have columnA = 1,columnB = 2,columnC=33...etc.].
Since there are many more situations,i dont know how to query it. [there is a way by using declare & count but very tedious].

Thanks Very Much!

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2009-06-24 : 12:44:17

just use a function to parse the string and seperate the values b/w - characters. you can try below as an example

SELECT t.yourcol,f.ID,f.Val
FROM yourtable t
CROSS APPLY dbo.ParseValues (REPLACE(t.yourcol,'LA-',''),'-') f

ParseValues can be found below

http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=115544

mathmath
Starting Member

13 Posts

Posted - 2009-06-24 : 20:23:39

quote:
Originally posted by visakh16

just use a function to parse the string and seperate the values b/w - characters. you can try below as an example

SELECT t.yourcol,f.ID,f.Val
FROM yourtable t
CROSS APPLY dbo.ParseValues (REPLACE(t.yourcol,'LA-',''),'-') f

ParseValues can be found below

http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=115544

*Does this work on MsSQL?
*I read the ariticle. This maybe obviouse, but how do you use a function that you just created?

mathmath
Starting Member

13 Posts

Posted - 2009-06-25 : 01:54:48

quote:
Originally posted by visakh16

just use a function to parse the string and seperate the values b/w - characters. you can try below as an example

SELECT t.yourcol,f.ID,f.Val
FROM yourtable t
CROSS APPLY dbo.ParseValues (REPLACE(t.yourcol,'LA-',''),'-') f

ParseValues can be found below

http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=115544

OMG!! it worked perfectly. THANK YOU SO MUCH

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2009-06-25 : 13:48:17

welcome

mathmath
Starting Member

13 Posts

Posted - 2009-06-25 : 23:54:53

quote:
Originally posted by visakh16

just use a function to parse the string and seperate the values b/w - characters. you can try below as an example

SELECT t.yourcol,f.ID,f.Val
FROM yourtable t
CROSS APPLY dbo.ParseValues (REPLACE(t.yourcol,'LA-',''),'-') f

ParseValues can be found below

http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=115544

*I encounter another problem:

What happen if my Data has various 'L's, such as LB-, L123-, how should i deal with it?

THanks

bklr
Master Smack Fu Yak Hacker

1693 Posts

Posted - 2009-06-26 : 00:32:47

try this one


select s.yourcol,substring(yourcol,charindex('-',yourcol)+1,abs(charindex('-',yourcol,charindex('-',yourcol,charindex('-',yourcol)+1))-charindex('-',yourcol,1)-1)) as id,
case when charindex('-',yourcol,charindex('-',yourcol)+1)>0 then right(yourcol,charindex('-',yourcol)-1) else ''end as [value]
from (select 'la-4-55'as yourcol union all select 'ht-5-67' union all select 'la-') s
inner join master..spt_values v on type ='p'			
			and v.number > 0
			and v.number <= len(s.yourcol)
where		substring(' ' + s.yourcol, v.number, 1) = ' '

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2009-06-26 : 13:46:04

quote:
Originally posted by mathmath

quote:
Originally posted by visakh16

just use a function to parse the string and seperate the values b/w - characters. you can try below as an example

SELECT t.yourcol,f.ID,f.Val
FROM yourtable t
CROSS APPLY dbo.ParseValues (REPLACE(t.yourcol,'LA-',''),'-') f

ParseValues can be found below

http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=115544

*I encounter another problem:

What happen if my Data has various 'L's, such as LB-, L123-, how should i deal with it?

THanks

then make it like below


SELECT t.yourcol,f.ID,f.Val
FROM yourtable t
CROSS APPLY dbo.ParseValues (SUBSTRING(t.yourcol,CHARINDEX('-',t.yourcol)+1,LEN(t.yourcol)-CHARINDEX('-',t.yourcol)),'-') f

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