Solved

How do I convert a string of comma separated values into a database table?

Posted on 2011-09-08
7
214 Views
Last Modified: 2012-05-12
I have a user table that looks like this, where AuthorizedDBList is a string that I use in an IN clause of an Access Database.
UserId, AuthorizedDBList
1, 050','051','052',053
What I want is to convert to a SQL Server, Many-to-Many, AuthorizedDatabase table that looks like this.
UserId, DatabaseId
1,050
1,051
1,052
1,053

My question is... how do I get from one to the other?
0
Comment
Question by:jamestieman
7 Comments
 
LVL 5

Expert Comment

by:DavidMorrison
ID: 36505807
if this is a one off I'd suggest exporting to a text editor and removing the quotes round the string.

Then pull it into sql which should give each value its own column as you've removed the quotes. from there do a PIVOT statement (http://msdn.microsoft.com/en-us/library/ms177410.aspx) and your done


Thanks

Dave
0
 
LVL 9

Expert Comment

by:borki
ID: 36505814
Is this a one-off conversion? Or, are you doing this on a regular basis?
Where are you executing the code, Access (VBA) or SQL server (TSQL)?
0
 
LVL 32

Expert Comment

by:ewangoya
ID: 36507068

You can create a split function, then use a loop control to populate your result table
ALTER FUNCTION [dbo].[Split] 
(
@String VARCHAR(8000), 
@Delimiter VARCHAR(1)
) 
RETURNS @Tokens table (Token VARCHAR(255)) 
AS 
BEGIN 
WHILE (CHARINDEX(@Delimiter,@String)>0) 
   BEGIN 
       INSERT INTO @Tokens (Token) VALUES
       (LTRIM(RTRIM(SUBSTRING(@String,1,CHARINDEX(@Delimiter,@String)-1)))) 
       SET @String = SUBSTRING(@String, CHARINDEX(@Delimiter,@String)+LEN(@Delimiter),LEN(@String)) 
   END 
   INSERT INTO @Tokens (Token) VALUES (LTRIM(RTRIM(@String)))
RETURN 
END

Open in new window

0
NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

 
LVL 32

Accepted Solution

by:
ewangoya earned 500 total points
ID: 36507151
you can use it in this manner
declare @test table(id int, value varchar(512))
declare @result table(id int, value varchar(255))

insert into @test 
select 1, '12,34,45,56,76' 
union all
select 2, '98,87,5'

declare @id integer, @values varchar(10)

select top 1 @id = ID from @test order by id

while exists(select 1 from @test where id >= @id)
begin
  select top 1 @id = Id, @values = value
  from @test
  where id >= @id
  order by id asc
  
  insert into @result
  select @id, Token
  from dbo.Split(@values, ',') A
  
  set @id = @id + 1
end

select * from @result

Open in new window

0
 
LVL 12

Expert Comment

by:Saurabh Bhadauria
ID: 36507880
At below you can find excellent way to generate a table from comma separated string..

http://www.sqlservercentral.com/articles/String+Manipulation/72540/

Let me know if  you have any doubts..
0
 
LVL 3

Expert Comment

by:hspoulsen
ID: 36509112
I think you should have a look at http://sommarskog.se/arrays-in-sql-2005.html

Erland is a MVP, and his entire homepage is worth spending quite a few hours on reading and understanding.

The link is pointing at a split function, which is implemented in many different ways, and compared to each other for speed, features and robustness.

HIH
Best regards,
Henrik Staun Poulsen, Stovi Software

0
 

Author Closing Comment

by:jamestieman
ID: 36510668
I appreciate everyone's advice, but ewangoya gave me a cut and paste solution that worked the first time.  
Thanks to all
Jamie
0

Featured Post

NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Use this article to create a batch file to backup a Microsoft SQL Server database to a Windows folder.  The folder can be on the local hard drive or on a network share.  This batch file will query the SQL server to get the current date & time and wi…
Describes a method of obtaining an object variable to an already running instance of Microsoft Access so that it can be controlled via automation.
Basics of query design. Shows you how to construct a simple query by adding tables, perform joins, defining output columns, perform sorting, and apply criteria.
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

786 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question