How To Use Input Column Inside Script Component

Jul 22, 2007



Hi,



I have a script component and under input columns, I checked one of the fields I want to use inside the script. It's under the Input 0 in the hierarchical tree inside the inputs and outputs.



How do i use this inside the script?



cherriesh

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How To Run A Loop For All Columns In Script Component Input Column Collection For Each Row

Jan 22, 2008

Hi All,

I want to run a loop for all the input columns in the script component. My requirement is, I have nearly 50 columns in the input columns list. For each row and for each column I need to do some operation. How Can I run a loop for each column. Please note in the script component I need to get the column names in the middle for some operations. Please see below.

Process Each Input Row


For each column in Input column list
....
....
If column.Name Starts with "Test" then set NULL to the column value
....
....
End Loop

End Loop for each input row

Can anybody tell me how can I do that.

Regards
Venkat.

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Use Of A SSIS Variable Of Type “Object� Inside Script Component And Task Component

Mar 16, 2007

In a Data Flow, I have the necessity to use a SSIS variable of type €œObject€? inside Script Component and assign to it the content of 'n' variables of string type.
On exiting from the script the variable of type object should contain something like in the following lines:
AAAAAAAAAAAAAAAAAAAAAAAAAAAAA
BBBBBBBBBBBBBBBBBBBBBBBBBBBBB
CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
DDDDDDDDDDDDDDDDDDDDDDDDDDDDD
€¦€¦€¦€¦€¦€¦€¦.
€¦€¦€¦€¦€¦€¦€¦.
On exiting from the data flow I will use the variable of type Object in a Script Task, by reading each element in a cyclic fashion.
Is there anyone who have experienced something like this? Could anyone provide any example of that?
Thanks in advance!

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Serious Script Component Bug - Clears Out All Code Inside Component

Nov 27, 2007



No idea where this bug crept in from. Have been using SSIS for 1.5 years now without hitting this problem.

I had a script component opening an XML document and parsing it using XPATH. I added some code that uses StreamReader / Streamwriter (closing one stream before starting the other). The code works without issue in my C# app.

And it ran without issue 2-3 times in SSIS. Then suddenly after running my package again, the script component says it completes successfully, yet nothing happens. I set a breakpoint on the first line of code - it never hits it. I add a msgbox as the first line of code - and it never displays.

I then close my package / exit out of ssis ... and then re-open it. When i open my script component, all of my code is GONE. All references that I added are gone.

I tried adding the streamreader/writer process to a dll I created from my c# app ... and added the DLL to the package -- same result.

I can reproduce this on 2 different computers.

Anyone experience this problem ? Any idea how to stop it ? Or debug it ?


Here is a slimmed down code sample of what causes the error :


Public Class ScriptMain
Public Sub Main()
Try
Dim xmlDoc As New XmlDocument
xmlDoc.Load("c:ulkasync_86281519_20070628045850225_4.xml")
MsgBox("xmlLoaded") --this doesn't display once the package starts "acting up"
Catch ex As Exception
MsgBox(ex.Message)
UpdateXML("c:ulkasync_86281519_20070628045850225_4.xml", ex.Message)
End Try
Dts.TaskResult = Dts.Results.Success
End Sub
Private Sub UpdateXML(ByVal fileName As String, ByVal message As String)
Try
Dim invalidChar As String = message.Trim().Substring(message.Trim().IndexOf("0x"), 4)
Dim rd As StreamReader = New StreamReader(fileName)
Dim xml As String = rd.ReadToEnd()
Xml = Xml.Replace(invalidChar, String.Empty)
xml = xml.Replace("", String.Empty)
xml = xml.Replace("<![CDATA[<![CDATA[", "<![CDATA[")
xml = xml.Replace("]]>]]>", "]]>")
MsgBox("replaced")
rd.Close()
Dim wr As StreamWriter = New StreamWriter(fileName)
wr.Write(xml)
wr.Close()
Dim xdoc As XmlDocument = New XmlDocument()
xdoc.Load(fileName)
Catch ex As Exception
UpdateXML(fileName, ex.Message)
End Try
End Sub
End Class

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May 28, 2007

I did make the SQLServer 2005 tutorial, but the LokUp point I see an error "This component has no available input columns". How I can to solve this?

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Mar 27, 2008

Hi all. Can you help me? I'm trying to build a custom component that recieves two datasources (like for instance the union all) . I first started by adding a new IDTSInput90 in the ProvideComponentProperties, but when I tried to use the component I got an error that has very helpful :

===================================

The component could not be added to the Data Flow task.
Could not initialize the component. There is a potential problem in the ProvideComponentProperties method. (Microsoft Visual Studio)

===================================

Error at Data Flow Task [Replica Transformation [1289]]: System.Runtime.InteropServices.COMException (0xC0048004): Exception from HRESULT: 0xC0048004
at Microsoft.SqlServer.Dts.Pipeline.Wrapper.IDTSOutputCollection90.get_Item(Object Index)
at MyCustomSSISComponent.SampleComponentComponent.ProvideComponentProperties()
at Microsoft.SqlServer.Dts.Pipeline.ManagedComponentHost.HostProvideComponentProperties(IDTSManagedComponentWrapper90 wrapper)


===================================

Exception from HRESULT: 0xC0048004 (Microsoft.SqlServer.DTSPipelineWrap)

------------------------------
Program Location:

at Microsoft.SqlServer.Dts.Pipeline.ManagedComponentHost.HandleUserException(Exception e)
at Microsoft.SqlServer.Dts.Pipeline.ManagedComponentHost.HostProvideComponentProperties(IDTSManagedComponentWrapper90 wrapper)
at Microsoft.SqlServer.Dts.Pipeline.Wrapper.CManagedComponentWrapperClass.ProvideComponentProperties()
at Microsoft.DataTransformationServices.Design.PipelineTaskDesigner.AddNewComponent(String clsid, Boolean throwOnError)

This is my ProvideComponentProperties:





Code Snippet

public override void ProvideComponentProperties()
{
RemoveAllInputsOutputsAndCustomProperties();

ComponentMetaData.UsesDispositions = true;

IDTSInput90 input = ComponentMetaData.InputCollection.New();
input.Name = "Staging Data";
input.ErrorRowDisposition = DTSRowDisposition.RD_FailComponent;

IDTSInput90 input2 = ComponentMetaData.InputCollection.New();
input2.Name = "Replica Data";
input2.ErrorRowDisposition = DTSRowDisposition.RD_FailComponent;

// Add the output
IDTSOutput90 output = ComponentMetaData.OutputCollection.New();
output.Name = "Replica Output";
output.SynchronousInputID = input.ID;
output.ExclusionGroup = 1;

// Add the error output
AddErrorOutput("StagingErrorOutput", input.ID, output.ExclusionGroup);

// Adds columns
AddXmlColumn();

IDTSOutputColumn90 column0 = ComponentMetaData.OutputCollection[1].OutputColumnCollection.New();
column0.Name = m_SyncStatusColumnName;
column0.SetDataTypeProperties(DataType.DT_STR, 1, 0, 0, 1252);

IDTSOutputColumn90 column1 = ComponentMetaData.OutputCollection[2].OutputColumnCollection.New();
column1.Name = m_AS400ImportedDateColumnName;
column1.SetDataTypeProperties(DataType.DT_DATE, 0, 0, 0, 0);

}

Since I'm new to SSIS I'm following Josh's SSIS Xmlify Data Flow Task sample.

Thanks.

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Jan 7, 2008



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4) Insert a record for another Object A via ADO
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When I get to step (5), an error is raised because SCOPE_IDENTITY returns NULL. This is as if it was returning the Identity value for the trigger that did not cause any INSERT on the UPDATE statement in (3). All the steps are performed using a single connection.

The trigger will duplicate the updated record in another table if a certain flag is set, so in my case, it was not set yet.

It's just weird that this would happen. If I delete the trigger, everything works fine. @@IDENTITY gives me the same problem. It's really as if the trigger was taking over or something and unless I put something between the two steps I get this error. There's one thing though. In step (3), I was using the adCmdText flag for the ADO statement. If I use adExecuteNoRecords it works fine. However I don't understand why it would be this way, I'm trying to understand why it's not working to begin with, even though the sequence of the steps performed should.

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This is very similar to the post: http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=1901076&SiteID=1

I am trying to do this. Basically, if the field I am checking contains a space - not an empty string - I want to assign it an empty string so it will get converted to NULL when it hits the SQL destination. The space character from the source is causing the rows to fail I want to force a NULLin the database as a "workaround" from something I am working on.

I thought I had this set up correctly, but it is not working. I have the field in question as an input field set to ReadWrite

If Row.[COLNAME].ToString = " " Then
Row.[COLNAME] = ""
End If

I am getting the following error:

[Assign District Code [12469]] Error: System.NullReferenceException: Object reference not set to an instance of an object. at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.HandleUserException(Exception e) at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.ProcessInput(Int32 inputID, PipelineBuffer buffer) at Microsoft.SqlServer.Dts.Pipeline.ManagedComponentHost.HostProcessInput(IDTSManagedComponentWrapper90 wrapper, Int32 inputID, IDTSBuffer90 pDTSBuffer, IntPtr bufferWirePacket)


I can provide more details if needed.

Thanks for your help.

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Hi
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and i have tried .
Test_var = Me.ProcessInput(186, "fulldoc").Value

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.Parameters("@FecEnajenacion").Value = "1999-01-01"

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Nov 26, 2007



I'm trying write a reusable script component that takes data from rows that were rejected from a SQL Destination operation and put them into a common SQL error table.

This script would basically function to take the input columns selected in the script, and build a delimited string, (similar to the 'Flat File Source Error Output' that is contains redirected rows from reading a flat file) and insert this string into a SQL table called 'SourceData' to store errors.

I'm trying to script the component to iterate through all input columns (as selected in the input columns screen) and build a simple string.






Code Block
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
'Use the incoming error number as a parameter to GetErrorDescription
Row.ErrorDescription = ComponentMetaData.GetErrorDescription(Row.ErrorCode)
Try

Row.ErrorColumnName = ComponentMetaData.InputCollection(0).InputColumnCollection(Row.ErrorColumn).Name
Catch ex As Exception

Row.ErrorColumnName = String.Concat("Column Name retrieval failure. Details", ex.Message)
End Try
'
'Build input data
'
Dim inData As String

For Each inputCol As IDTSInputColumn90 In ComponentMetaData.InputCollection(0).InputColumnCollection
inData = String.Concat(inData, "~", inputCol.Name) 'I don't want the name, but the value.
Next
Row.SourceData = inData
'
End Sub


I've only got as far as iterating the names of columns in the input buffer, but how do i get the values?

The result i'm trying to achieve is :
Selected columns in 'Input Column' screen : Name, Address, Phone
OutPut column 'SourceData' value : Harry~Melbourne~None

I don't want to write the code as:



Code Block
inData = Row.Name
indata = String.Concat(inData,"~",Row.Address)
indata = string.concat(inData,"~",Row.Phone)

as this make my code not very reusable. I've got some tables which are 100+ columns long and I don't wish modify the code too much

I have also tried overriding the ProcessInput() function of the script component to iterate through the buffer columns :



Code Block
Public Overrides Sub ProcessInput(ByVal InputID As Integer, ByVal Buffer As Microsoft.SqlServer.Dts.Pipeline.PipelineBuffer)

MyBase.ProcessInput(InputID, Buffer)

Dim iCnt As Integer = 0
Dim inData As String

If Buffer.ColumnCount > 0 Then

For iCnt = 0 To Buffer.ColumnCount - 1

inData = String.Concat(Buffer.Item(iCnt)) 'Error thrown here: PipelineBuffer has encountered an invalid row index value.
Next
End If
End Sub





but i get an error when i run it.

Please help.

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Jan 11, 2008

Hi!
I have a "little" problem with nested case model:



-- "normal" database:

DROP TABLE [unitInfo] ;

GO

CREATE TABLE unitInfo (

unitID INT PRIMARY KEY

, beginDate SMALLDATETIME

, area VARCHAR(10)

, partSize INT

, y2predict MONEY

) ;

go

INSERT INTO unitInfo

VALUES (1, '2007-02-01', 'home', 42, 10.0) ;

INSERT INTO unitInfo

VALUES (2, '2007-03-05', 'home', 43, 11.0) ;

INSERT INTO unitInfo

VALUES (3, '2007-02-02', 'office', 11, 11.4) ;

INSERT INTO unitInfo

VALUES (4, '2007-02-01', 'office', 10, 33.6) ;

INSERT INTO unitInfo

VALUES (5, '2007-02-01', 'office', 42, 44.1) ;



CREATE TABLE unitLog (

id INT IDENTITY(1, 1)

PRIMARY KEY

, logtime SMALLDATETIME

, -- combination of logtime/unitID is unique

unitID INT

, -- "FK" on unitInfo

m1 FLOAT

, m2 FLOAT

)





INSERT INTO [unitLog]

VALUES ('2007-01-01', 1, 43.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-01', 2, 43.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-01', 3, 63.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-02', 4, 432.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-02', 1, 43.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-03', 1, 423.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-04', 1, 432.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-05', 2, 43.0, 441.0)

INSERT INTO [unitLog]

VALUES ('2007-01-06', 2, 43.0, 4.0)

INSERT INTO [unitLog]

VALUES ('2007-01-06', 3, 43.0, 4.0)

INSERT INTO [unitLog]

VALUES ('2007-01-07', 1, 4.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-08', 1, 3.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-08', 1, 43.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-08', 1, 43.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-09', 2, 143.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-10', 3, 143.0, 44.0)

INSERT INTO [unitLog]

VALUES ('2007-01-11', 4, 43.0, 144.0)

INSERT INTO [unitLog]

VALUES ('2007-01-11', 5, 43.0, 144.0)

INSERT INTO [unitLog]

VALUES ('2007-01-12', 2, 43.0, 144.0)

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VALUES ('2007-01-13', 4, 413.0, 44.0)

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INSERT INTO [unitLog]

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INSERT INTO [unitLog]

VALUES ('2007-01-20', 1, 43.0, 414.0)

INSERT INTO [unitLog]

VALUES ('2007-01-22', 1, 43.0, 414.0)



-- SSAS:

CREATE MINING STRUCTURE NestedStructure

( unitID LONG KEY, beginDate DATE CONTINUOUS, area TEXT DISCRETE

, partSize LONG CONTINUOUS, y2predict DOUBLE CONTINUOUS

, logdata table ( [id] LONG KEY, unitID LONG CONTINUOUS

, m1 DOUBLE CONTINUOUS, m2 DOUBLE CONTINUOUS

)

)

ALTER MINING STRUCTURE NestedStructure

ADD MINING MODEL nestedModel ( unitID , beginDate REGRESSOR, area , partSize REGRESSOR

,y2predict REGRESSOR PREDICT_ONLY

, logdata ([id] , unitID

, m1, m2

)

) USING Microsoft_Decision_Trees

/* version 1*/

insert into NestedStructure ( unitID, beginDate, area, partSize, y2predict

, logdata(skip,unitID, m1, m2))

openrowset('sqloledb', Server=myserver;Trusted_Connection=yes;,

'Shape {select * FROM mydb.dbo.unitInfo }

Append ( { select id, unitID, m1, m2 from mydb.dbo.unitLog }

Relate unitID to unitID ) as logdata ')

Parsing the query ...

OLE DB error: OLE DB or ODBC error: Syntax error or access violation; 42000.

Parsing complete

Where is the error?



/*version 2*/

CREATE MINING STRUCTURE NestedStructure1

( unitID LONG KEY, beginDate DATE CONTINUOUS, area TEXT DISCRETE

, partSize LONG CONTINUOUS, y2predict DOUBLE CONTINUOUS

, logdata table ( [id] LONG KEY, unitID LONG CONTINUOUS

, m1 DOUBLE CONTINUOUS, m2 DOUBLE CONTINUOUS

)

)

ALTER MINING STRUCTURE NestedStructure1

ADD MINING MODEL nestedModel1 ( unitID , beginDate REGRESSOR, area , partSize REGRESSOR

,y2predict REGRESSOR PREDICT_ONLY

, logdata ([id] , unitID

, m1, m2

)

) USING Microsoft_Decision_Trees



insert into mining structure NestedStructure1 ( unitID, beginDate, area, partSize, y2predict

, logdata(skip,unitID, m1, m2))

Shape {openquery(dsnDB,'select * FROM mydb.dbo.unitInfo') }

Append ( { openquery(dsnDB,'select id, unitID, m1, m2 from mydb.dbo.unitLog') }

Relate unitID to unitID ) as logdata



Parsing the query ...

Error (Data mining):

INSERT INTO error: The '[logdata].[id]' nested table key column is not bound to an input rowset column.

Parsing complete








Remark that combination logtime/unitID is the natural key in unitLog.
"ID" is the surrugate key.

What is wrong here...?

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There has to be an object in the pipeline that will allow me to do this right?



Something like "ComponentMetaData.InputCollection(0).InputColumnCollection([COLUMN NAME])"



Can someone recommend how I would do this. I have tried a few things, but can't seem to get to the Value or ToString of the column I want in this row.



Thanks

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I feel bad that I cannot post the xml here because it contains a lot of sensitive data. It will be very hard for me to replace those sensitive data without breaking the syntax integrity.I used to know XPath, but couldn't make out above Select.

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update tableA
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column B = ?
where columnC = ?
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I can't map the Input column to more than one parameter so I've been forced to create a copy of columnA and ColumnB as input columns so I can map to the extra paramters that the Command shape expects.

I also attempted to modify the command syntax so it set up variables for the 3 values required and then set the values to parameters - but I get a very unhelpful syntax error message: -
declare @ValueA varchar(50),
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select @ValueA = ?,
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@ValueC = ?,
update tableA
set columnA = @ValueA ,
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Hi Experts,

I am new to this forum and SQL usage.

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Regards
SEkar

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When I run the proc I get the following error :

Msg 245, Level 16, State 1, Procedure Transfer, Line 17

Conversion failed when converting the varchar value '@ID' to data type int.

----####################################################
USE [tbldata]
GO
/****** Object: StoredProcedure [dbo].[Transfer] Script Date: 05/19/2014 11:26:38 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER PROCEDURE [dbo].[Transfer](@ID int)

[code].....

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I'm also wondering can we run SQL Script against input dataset in a SSIS component?

 

 

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how could I impletement this in SSIS package?

I tried with lookup, modify scripts by enabling memory restriction. It doesn't say any error when I save the package, but I never get pass debug.

HELP!!

 

 

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