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wm_concat for sqlserver

Posted on 2011-02-23
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Last Modified: 2012-05-11
What is the equivalent of the oracle wm_concat function for SqlServer 2005+?
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Question by:rmtdev2
9 Comments
 
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Expert Comment

by:vinurajr
ID: 34959146
Is wm_concat does a comma separate delimited string..? this can be done in sql server using COALESCE

just give a search for COALESCE you can find the examples.
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Author Comment

by:rmtdev2
ID: 34966610
SELECT
   SUBSTRING(buzz, 2, 2000000000)
FROM
    (
    SELECT 
        rsp_id
    FROM 
        caproductrsphrase
    WHERE
        i_id = 1
    FOR XML PATH (',')
    ) fizz(buzz)

Open in new window


I tried the code above and got and error: Row name ',' contains an invalid XML identifier as required by FOR XML; ','(0x002C) is the first character at fault.

When I try without the comma my result is embedded with xml tags:
rsp_id>48</rsp_id><rsp_id>78</rsp_id><rsp_id>144</rsp_id><rsp_id>151</rsp_id><rsp_id>181</rsp_id><rsp_id>202</rsp_id>

Could you tell me where I went wrong?

Thanks
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LVL 75

Expert Comment

by:Anthony Perkins
ID: 34967035
I suspect this is what you mean:

I will leave it up to you to decide whether you want the trailing comma and how to lose it if you do not want it.
SELECT
   buzz
FROM
    (
    SELECT 
        rsp_id + ', ' + Data()
    FROM 
        caproductrsphrase
    WHERE
        i_id = 1
    FOR XML PATH (',')
    ) fizz(buzz)

If rsp_id is numeric, instead of:
rsp_id + ', ' + Data()
Use:
CAST(rsp_id As varchar(20)) + ', ' + Data()

Open in new window

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LVL 75

Expert Comment

by:Anthony Perkins
ID: 34967040
Oops there is a typo it should be:
SELECT
   buzz
FROM
    (
    SELECT 
        rsp_id + ', ' + Data()
    FROM 
        caproductrsphrase
    WHERE
        i_id = 1
    FOR XML PATH ('')
    ) fizz(buzz)

If rsp_id is numeric, instead of:
rsp_id + ', ' + Data()
Use:
CAST(rsp_id As varchar(20)) + ', ' + Data()

Open in new window

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Accepted Solution

by:
rmtdev2 earned 0 total points
ID: 34967618
thanks, but I got "Data is not a recognized built in function name."

I accomplish it via the following:

SELECT p1.i_id,
       ( SELECT p3.rsp_code + ','
           FROM caproductrsphrase p2, carsphrase p3
          WHERE p2.i_id = p1.i_id
          and p2.rsp_id = p3.rsp_id
          ORDER BY p3.rsp_code
            FOR XML PATH('') ) AS rsp_codes
      FROM caproductrsphrase p1
      GROUP BY i_id

Open in new window

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LVL 75

Expert Comment

by:Anthony Perkins
ID: 34976284
>>I got "Data is not a recognized built in function name."<<
Odd, as it worked fine for me.  Perhaps you are still using SQL Server 2005.
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Author Closing Comment

by:rmtdev2
ID: 34995598
I found that this was the cleanest way
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