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Concatenating Field Values


Concatenating Field Values

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Devo_SQL
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Is it possible to concatenate rows from a field in a dataset? I've done the following before with parameters:

=Join(Parameters!Location_ID.Label, ", ")

However, I would like to concatenate with fields like the following SubReport, but am receiving an "#Error":

=JOIN(Fields!Source.Value, ", ")

Any ideas? Thanks!
Jeff Moden
Jeff Moden
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Perhaps you can modify the following technique... dunno if it'll actually work in Reporting Services but, rumor has it that you can make queries and functions part of the works...

http://www.sqlservercentral.com/articles/Test+Data/61572/

--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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bledu
bledu
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do it and see if you get an error.


Everything you can imagine is real.

Devo_SQL
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I'd like to perform the report formatting using SSRS expressions if possible, but maybe I'll end up doing it in the SQL code if I can't find another way. No one knows of a way to take a dataset and concatenate a series of column/row values into one string?
DamienB
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G'day mate,

I'm not sure if I'm interpreting the question correctly... But I'll throw this out there Smile I do some schools work, so here I am representing:

"Amazing Super School Semester:1 Term:1 Week:4 @ 20/06/2008 7:39:49 AM"

=First(Fields!campus_name.Value, "Attend_Days") & 
" Semester:" & Parameters!semester.Value &
" Term:" & Parameters!term.Value & " Week:" & Parameters!week.Value & " @ " & Globals!ExecutionTime



By using the ambasand? (&) I can string SSRS fields and plain text all together. Hope this helps BigGrin

- Damien
Devo_SQL
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No, not looking to simply concatenate strings, but the DataSet (array?) values. I am looking for a tool or method to iterate through the DataSet and concatenate all of the field values. I've done so with the JOIN method for parameter lists but this does not seem to work for DataSet field values.
Matt Miller (#4)
Matt Miller (#4)
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Devo - have you actually tried the methods in Jeff's article? There's no reason you couldn't use the function run against DISTINCT values in SSRS.

----------------------------------------------------------------------------------
Your lack of planning does not constitute an emergency on my part...unless you're my manager...or a director and above...or a really loud-spoken end-user..All right - what was my emergency again?
Devo_SQL
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I did get Jeff's method to work in SQL Server Management Studio with the following code:

SELECT(STUFF((SELECT ', '+AS1.Source
FROM Agent_Source AS1 INNER JOIN
Agent_Source_Release ASR ON ASR.Agent_Source_ID = AS1.Agent_Source_ID
WHERE (Release_ID = @Release_ID)
FOR XML PATH('')),1,2,''))

However, when I moved the query into the SSRS dataset it wants me to declare the @Release_ID variable. SSRS has already created this variable for me but it continues to say it's not there.

I think the real problem is with the FOR XML PATH method. With even a simple select query I get the following error as soon as I add "FOR XML PATH('')" to the end of a statement:

"Unable to parse query text."
Jeff Moden
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I'd try to help... but I can't even spell SSRS, yet. Sorry...

--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
sparky-407434
sparky-407434
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Did anyone find a solution to this?
I would also like to concatenate like:
=Join(Fields!Total.value,",").
I also have did similar for parameter selections.
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