Execute SQL Task - FOR XML PATH query error

I have the following query
SELECT pl.Id,
pl.StartTime,
pl.EndTime,
pl.PackageName,
pl.Computer,
pl.Operator,
CASE WHEN (CHARINDEX('stack trace', pl.ErrorDescription) > 0) Then
   SUBSTRING(pl.ErrorDescription, 0, CHARINDEX('stack trace', pl.ErrorDescription))
   ELSE
   pl.ErrorDescription
   END as ErrorDescription
ISNULL(ErrorFile,'') as ErrorFile,
'Not Applicable' as SourceSystem
FROM etl.PackageLog as pl
WHERE pl.Processed = 0
ORDER BY pl.StartTime, pl.PackageName
FOR XML PATH('Row'), ROOT(N'FieldingCounts')
in a Execute SQL Task and i get the following error:
[Execute SQL Task] Error: Executing the query "SELECT pl.Id,
pl.StartTime,
pl.EndTime,
pl.Package..." failed with the following error: "An invalid character was found in text content.
". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
The query execute without problem in database and in the ssis package doens't run because of the column
CASE WHEN (CHARINDEX('stack trace', pl.ErrorDescription) > 0) Then
   SUBSTRING(pl.ErrorDescription, 0, CHARINDEX('stack trace', pl.ErrorDescription))
   ELSE
   pl.ErrorDescription
   END as ErrorDescription
Any help to overcome the problem?
Thanks

Hi,
It looks like that you must be trying to set the result of the query to some variable from the Execute SQL Task. If yes, make sure that the target variable is of the correct data type where XML string can fit into. Considering that in SSIS, we have
some limit for XML strings.
Please let me know if it doesn't help.
Thanks,
Nimit

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http://social.msdn.microsoft.com/Forums/sqlserver/en-US/40ee7eff-5ec1-426f-a1a8-ab85b40b51aa/error-variable-can-not-be-found-while-executing-package-from-the-net-code?forum=sqlintegrationservices
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Biztalk WCF-SQL polling sample using a FOR XML Path

I've been searching in the web for a sample that uses FOR XML "PATH" to poll the SQL database . The result returned from my query is a parent child data and FOR XML PATH is the best choice to structure it in that way . I guess I'm missing something while
generating the schemas from this stored procedure.
I guess Dan Rosanova has touched on this concept (http://social.technet.microsoft.com/wiki/contents/articles/3480.aspx)
, but its using XML Auto. Again there is no sample available so makes things a bit difficult.
Can someone point to a sample walkthrough , generating the schemas and then later using it in the application.
Thanks
Anthstone

I used XMLPolling and it worked for me. you can go for XMLPolling. Steps to be followed:
1) Create the SP which will have the SELECT query similar to below:
;WITH XMLNAMESPACES (default 'http://yourcustomnamespace')
Select * from Employee FOR XML PATH('YourCustomRootNode')
2) Create a schema out of the table using the following query
Select * from Employee for
xml
auto,
xmlschema
3) Re-name the root name and namespace as per you mentioned in point#1 (YourCustomRootNode)
4) Create an Envelope Schema and refer the schema from point#3. Also make a note of the root node name and namespace that we need to specify
in the admin console.
5) Assign the Body XPath to debatch. Refer
this. Deploy the solution.
6) In the Admin console, add the Root Node Name and namespace mentioned in point#4 under "XmlStoredProcedureRoodNodeName" and "XmlStoredProcedureRoodNodeNamespace"
There you go. I did this for debatching. You can do for nomarl batch message instead of Envelope create a normal document schema.
Thanks
SKGuru

Query regarding FOR XML PATH

I have found a script that contains the following:
stuff(
select
', ' +
fielda
from
tablea
for
xml path (''),
type).value
'nvarchar(max)')
,1,2,
anotherfield
This will concatenate field a and the stuff will remove the leading comma.
I have amended the script to the following and it still works:
Stuff(
select
', ' +
fielda
from
tablea
for
xml path (''))
,1,2,
Afield,
Please could somebody tell me why the following has been inserted after the
for xml path ('')
section
type).value
('.', 'nvarchar(max)')

Erland - I just did a quick test. The differences weren't as bad as the subtree estimates would have indicated but they weren't exactly close either. The typed version (on average) took just over twice as long to execute.
Test conditions were as follows:
AdventureWorks2012 database
On average, the non-typed version executed in ~190 ms and the typed version executes in ~405 ms.
Test bed was the following:
@@VERSION =
Microsoft SQL Server 2012 - 11.0.2218.0 (X64)
Jun 12 2012 13:05:25
Copyright (c) Microsoft Corporation
Developer Edition (64-bit) on Windows NT 6.2 <X64> (Build 9200: )
Hardware =
Processor: Core i7-4770K @ 3.50GHz (4 physical cores / 8 logical cores)
Ram: 16.0 GB @ 2400 MHz
HD: SSD
Here are the two test scripts that I used... (each run in it own SSMS tab)
-- Typed version --
DECLARE @BegDT DATETIME2(7) = SYSDATETIME()
SELECT
sod1.SalesOrderID,
STUFF((
SELECT ', ' + CAST(sod2.ProductID AS VARCHAR(8))
FROM Sales.SalesOrderDetail sod2
WHERE sod1.SalesOrderID = sod2.SalesOrderID
FOR XML PATH(''), TYPE).value('.', 'varchar(max)'), 1, 2, '') AS csv
FROM
Sales.SalesOrderDetail sod1
GROUP BY
sod1.SalesOrderID
SELECT DATEDIFF(ms, @BegDT, SYSDATETIME()) AS ExecTimeMS
-- Non-typed version --
DECLARE @BegDT DATETIME2(7) = SYSDATETIME()
SELECT
sod1.SalesOrderID,
STUFF((
SELECT ', ' + CAST(sod2.ProductID AS VARCHAR(8))
FROM Sales.SalesOrderDetail sod2
WHERE sod1.SalesOrderID = sod2.SalesOrderID
FOR XML PATH('')), 1, 2, '') AS csv
FROM
Sales.SalesOrderDetail sod1
GROUP BY
sod1.SalesOrderID
SELECT DATEDIFF(ms, @BegDT, SYSDATETIME()) AS ExecTimeMS
If you see holes in my test approach, please let me know.
Thanks,
Jason
Jason Long

"for XML path " Oracle equivalent of this SQL expression

SELECT TheID,
REPLACE(
RTRIM(
SELECT StudentID + ' '
FROM StudentinSchoolLocation TL
WHERE (LocationID = Results.LocationID)
FOR XML PATH ('')
) AS StudentIDs,
What is the equivalent of 'For XML path' used above
The goal is to get a concatenated list of the group by columns. Like where ever the location is same , get the studentIds and make a comma seperated list of all ids for common location
Works perfectly in SQL.
Thank you

Hi,
user6287828 wrote:
The goal is to get a concatenated list of the group by columns. Like where ever the location is same , get the studentIds and make a comma seperated list of all ids for common locationThat's called "String Aggregation"
[AskTom.oracle.com|http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:2196162600402] shows several different ways to do it.
I recommend the first one, the user-defined function STRAGG, which you can copy from that page.
On Oracle 10 (and up) you may have a similar function, WM_CONCAT (owned by WMSYS), already installed.
WM_CONCAT is not documented, so you may not want to use it in your Production applications.
STRAGG is not so convenient if the order of items in the concatenated string is important.
In that case, use XMLAGG or SYS_CONNECT_BY_PATH, as shown later in the asktom page.
MODEL can also do ordered string aggregation.

Execute SQL Task - FOR XML PATH query error

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