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un split in sql


un split in sql

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elham_azizi_62
elham_azizi_62
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hello all.
i use this function for split:
ALTER FUNCTION dbo.GLB_Split(@String varchar(8000), @Delimiter char(1))
returns @temptable TABLE (id int identity(1,1),items varchar(8000))
as
begin
declare @idx int
declare @slice varchar(8000)

select @idx = 1
if len(@String)<1 or @String is null return

while @idx!= 0
begin
set @idx = charindex(@Delimiter,@String)
if @idx!=0
set @slice = left(@String,@idx - 1)
else
set @slice = @String

if(len(@slice)>0)
insert into @temptable(Items) values(@slice)

set @String = right(@String,len(@String) - @idx)
if len(@String) = 0 break
end
return
end

but i want to write function split inverse and no with cursor,please help me.
my target is:
input of function :tables of string
output of function:string that seprate with comma like this:a,b,c,d
please help me how do i do and i donot want cursor.
bitbucket-25253
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Is this what you require ?


DECLARE @String VARCHAR(8000),@Delimiter CHAR(1)
SET @Delimiter = '-'
SET @String = 'A-ab-xx-y-vv-w w-'
select @String, REPLACE(@String,@Delimiter,',')
Result:

(Orinial) (Replaced)
A-ab-xx-y-vv-w w- A,ab,xx,y,vv,w w,




If everything seems to be going well, you have obviously overlooked something.

Ron

Please help us, help you -before posting a question please read

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GilaMonster
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Take a look at the last option here: http://databases.aspfaq.com/general/how-do-i-concatenate-strings-from-a-column-into-a-single-row.html


Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
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Jeff Moden
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elham_azizi_62 (10/7/2012)
but i want to write function split inverse and no with cursor,please help me.


I'm a bit confused here. You use a split function that is a slow scalar UDF that uses a While Loop (the guts of a cursor). My recommendation would be to fix that bad boy first.

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is not.
Just because you can do something in PowerShell, doesnt mean you should. Wink

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justmohit
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You can use XML PATH for the inverse function in which input is table of string and output is comma seperated value.
Jeff Moden
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justmohit (10/7/2012)
You can use XML PATH for the inverse function in which input is table of string and output is comma seperated value.


That's real nice. Do you have a code example or a link or something?

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is not.
Just because you can do something in PowerShell, doesnt mean you should. Wink

Helpful Links:
How to post code problems
How to post performance problems
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Jeff Moden
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@elham,

The following link has some excellent examples of how to do as you ask and it explains the "why".
http://www.sqlservercentral.com/articles/comma+separated+list/71700/

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is not.
Just because you can do something in PowerShell, doesnt mean you should. Wink

Helpful Links:
How to post code problems
How to post performance problems
Forum FAQs
elham_azizi_62
elham_azizi_62
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I want to have this:
select column1 from table1
column1
a
b
c
and result:a,b,c
and i donot want to use cursor or virtual table.please help me.thanks
yuvipoy
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declare @Temp Table(Col int)
Insert into @Temp
Select 1
UNION Select 2
UNION Select 3
UNION Select 4
UNION Select 5
Select * from @Temp
Declare @COALESCE varchar(200)
Set @COALESCE=''
Select @COALESCE=@COALESCE+Convert(varchar,Col)+',' from @Temp
Select @COALESCE=left(@COALESCE,LEN(@COALESCE)-1)
Select @COALESCE

Thanks!
elham_azizi_62
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thanks alot from you.
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