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
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'm trying to create a fairly simple custom transform component (because I've read that's the easiest one to create) which will take one column from a flat file source and based on the first row create the output columns. I'm actually trying to write a component that will solve the now well known problem with parsing CSV files in SSIS. I have a lot of source files and all have many columns so a component that can read in the first line from the CSV file and create the output columns automatically will save me lots of time when migrating the old DTS packages.
I have the basic component set up but I'm stuck when trying to override the OnInputPathAttached method because I don't know how to use the inputID to get the first line from the input (the buffer). Are there any good examples for creating output columns dynamically based on the input buffer? Should I just give up on on the transform and create a custom source component instead?
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.
I have a SSIS package with a Data Flow task. This task transfers the data from SQL Server 2000 to a table in SQL Server 2005.
I deployed and tested this package on the Test Server. Then put this package in a job and executed it - Works fine.
On the production server- If I execute the package through DTEXECUI, it works fine. But when I try executing it through a job- the job fails and it gives me following error:
Description: The external metadata column collection is out of synchronization with the data source columns. The "external metadata column "T_FieldName" (82)" needs to be removed from the external metadata column collection....
What I don't understand is, why are there no errors displayed when I execute the package through DTEXECUI.
actuallu the earlier obviously worked but now i am fetching values from 2 colums and in collection we can pass 2 strings i did that.but then how to increment the collection c.will just post the code . query fetching 2 records can add only 1 NameValueCollection c = new NameValueCollection(); cmd2.CommandText="select Pname ,HoursWorked from TimeSheet1 ts , ProjResource pr,ProjectDetails pd where ts.rid = pr.rid and ts.pcode=pr.pcode and pd.Pcode = ts.Pcode and pr.Rid = '" + Ridtxt.Text + " '"; cmd2 .Connection = con1; con1.Open(); SqlDataReader dr = cmd2.ExecuteReader();
while (dr.Read()) { c.Add(dr["pname"].ToString(), dr["hoursworked"].ToString()); }
as earliar supose c# 12 asp 11 only c# getting added even though loop is while dr.read() { } actually how to increment key as in c both strings are occupied
Hello, I am trying to configure a Script Component as a data source. Although this should be a simple exercise, I am running into a problem.
My control flow contains a Foreach Loop with a file iterator. The Directory Expression of the Foreach Loop Editor is supplied by an expression mapped to a package level variable called inputdirectory. The FileNameRetrieval Expression is mapped to a package scoped variable called filename.
My data flow is encapsulated by the Foreach Loop, and contains a Script Component as Source for the Data Flow Source, and a Flat File for the Data Flow Destination. The contents of the Script Designer are as follows:
Code Block Imports System Imports System.Data Imports System.Math Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper Imports Microsoft.SqlServer.Dts.Runtime.Wrapper Imports System.IO Public Class ScriptMain
Inherits UserComponent Dim thisFileDate As Date Dim thisFileName As String Dim thisFilePath As String Public Overrides Sub CreateNewOutputRows()
thisFileName = ReadOnlyVariables("filename").Value.ToString() thisFilePath = ReadOnlyVariables("inputdirectory").Value.ToString() thisFileDate = File.GetCreationTime(thisFilePath & "" & thisFileName) FileSpecBuffer.AddRow() FileSpecBuffer.FileName = thisFileName FileSpecBuffer.FullPath = thisFilePath & "" & thisFileName FileSpecBuffer.CreateDate = thisFileDate End Sub End Class
When I debug the package, I get the following error:
The collection of variables locked for read access is not available at this point.
at Microsoft.SqlServer.Dts.Pipeline.ScriptComponent.get_ReadOnlyVariables()
at ScriptComponent_67311120e6eb4162a3ea1f70847f04de.ScriptMain.CreateNewOutputRows()
at ScriptComponent_67311120e6eb4162a3ea1f70847f04de.UserComponent.PrimeOutput(Int32 Outputs, Int32[] OutputIDs, PipelineBuffer[] Buffers)
at Microsoft.SqlServer.Dts.Pipeline.ScriptComponentHost.PrimeOutput(Int32 outputs, Int32[] outputIDs, PipelineBuffer[] buffers)
My googlefu fails me at reconciling this. I have read various posts about changing the line ReadOnlyVariables("filename").Value to ReadWriteVariables("filename").Value, and handling the buffer assignment in PostExecute. The problem is that all examples shown are either for Script Component as Destination or Script Component as Transformation. I have tried playing with the Custom Properties in the Script Commponent set the ReadOnlyVariables and ReadWriteVariables, using a PreExecute method, a PostExecute method, all with different errors returning. I'm at a loss here. Could anybody provide me with a simple working example so that I can correctly populate my output buffer in the context of Script Component as Source?
I fully understand that I could just run a Script Task Using System.IO.Directory, and System.IO.File, but I really want to make this package work in the manner I've described. Any help would be appreciated.
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();
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 have a quick but imp SSIS question. I have a For Each Loop Container, and inside that I wish to add a Execute SQL Task item, so I can call a sp to do some inserts/updates. The ForEachLoop container is looping thru a ADO Object source variable(which is the user variable defined by me, as a FullResultSet). In my Execute SQL Task, I would like to utilize one of the columns from the result set as an input parameter to my Stored procedure. Can someone please advise on how to do this? Please let me know if you have any more questions. I am waiting for a response... Thanks in advance.
I have a script component which loads a file which is in a custom format. The script component is inside a For Each Loop Container and it uses a flat file connection manager. The loop sets the connection string for the connection manager.
The problem I'm having is that the connection string needs to be set to something every time that I start the package but I don't know ahead of time what file there will be, so I get a System.IO.FileNotFoundException error on the script component. If I manually set the variable for the connection string and point it to a file that exists, then the package runs fine but at the end of the package the connection string is set to the last file loaded and this file will no longer exist the next time the package runs.
I have an Excel file source. I keep getting this error when running the package:
"The external metadata column collection is out of synchronization with the data source columns. The column "x" needs to be updated in the external metadata column collection."
When I get this error with regular flat files, it's because I've changed the data type of a given column in the flat file connection manager. And I resolve it simply by double-clicking on the flat file source task, and viola - it corrects it for me.
Hi, I was wondering how I can complete a column (which doesnt have an input one) with data. For example:
I have a sql query which bring data of 3 columns
ID | FISRT NAME | LAST NAME 1 MIKE MORGAN 2 SARA JOHANES
So, I will insert that data in a FLAT FILE CONNECTION MANAGER, which I configured with 3 columns and I did the corresponding mapping in the FLAT FILE DESTINTATION.
Now, If I add one more column in the FLAT FILE CONNECTION MANAGER, I will not have it mapped to a input one, obviously. So, what I need is to add one more column to the flat file destination and complete it with zeros values in it.
Probably I can solve this part by introducing a DERIVED COLUMN and there I can configure the zeros that I want to add to the column. But I'm not sure if I can do that without having a input column. So, the question will be, how can I add one column to a flat file which doesnt have a input and introduce any value that I want to it? Hope I was clear Thanks for your help.
I have a stored proc I am updating in an OLEDB Command from the results of a Transform Script Component. The Stored Proc has over 65 input parameters, most of them have a NULL passed in. I dont want to create output columns in the Transform Script Component for all of them to map them from the "Available Input Columns" to "Available Destination Columns".
I want to create 3 or 4 generic Output columns for their data type - say IntegerOutput (datatype Int), DateTimeOut (datatype datetime) and so on. The I want to map these generic columns in the OLEDB Command as Available Input Columns" to multiple "Available Destination Columns" - wherever the datatype matches the input column.
But the OLEDB Command Column Mappings let me map One to One only. This will create a huge and unnecessary workload for me to develop and maintain - when I tell you I have 3 such stored procedures, all of whose interfaces are exactly same and for which I can create similar Output columns in the Transform Script Component.
We are trying to use the Import/export wizard to load a text file to a SQL Server 2005 database. The input file has a variable number of columns per row. For example, the first row has 3 columns, the second has 7, the third has 3, etc. The number of columns varies from 2 to 9 in the input file. The columns are separated by an uptick (`) and the rows are terminated by {CR}{LF}. We are using code page 1252. On processing, the wizard reads the first row (with 3 columns) ok, but then assumes all the other rows have 3 columns and parses the rows accordingly, ignoring the field and row terminators.
The process worked fine with SQL Server 2000. Is there some setting that we are missing, or some configuration on the database that we should be checking?
I'm using a Row Count Task to count the number of records passing thru a particular path in my data flow. I created a package variable and referenced this variable in the Components Properties tab in the Row Count Task. I believe this is the minimum I need to do to get the row count.
However, as I explore the other tabs in the editor, I see there is something called Input Columns tab. What is this for? I didn't select anything in there and things are working fine. At first I thought that I had to choose the columns that I want to have available to me for further processing after the Row Count Task, but this isn't the case. I am able to see all my columns coming out of the Row Count Task even tho I didn't do anything in the Input Columns tab.
I am trying to get a table from production to development created and populated with data in Prod. When I create a package to set the data flow on the available input columns in mappings I do not see any columns there. The source has been defined as the production table.
this is sanjeev, i have SSIS package, using my c# program i want to add one execute package task to this package's sequence container.
it is creating the new package with out any probelm. but when i opened the package and try to move the newly created exeute package task it is giving the following error.
the element cannot be found in a collection. this error happens when you try to retrieve an element from a collection on a container during the execution of the package
I have an SSIS Package. I am using script component to loop through input columns and their values. I am not able to do Null checking. The code is as below. In place of dashes , I want to do null checking but am not able to do. I tried vbNull, IsNull, TypeOf, System.dbNull but nothing is working. I guess am missing something here. Can anyone help me with this.
For Each column In Me.ComponentMetaData.InputCollection(0).InputColumnCollection
Is there by chance a cunning way to make the input columns automatically populate the output of an asynchronous script transformation?
My transformation writes several rows for each input row read. I'm creating some new columns along the way but I'd like all of the input columns to get output each time also. However I can't see any obvious way to achieve this, short of manually defining each column to the output and populating it in the script.
I have set up a script task in one of my packages that I have set up to modify another package right before running it. This package is nothing more than a data flow task that transfers rows via an sql command from one table into another. The strange thing is I have gotten it to work with some tables but not with others. T
he script bombs out in the loop where i map all of the columns found below, where i use MapInputColumn with the error HRESULT: 0xC0010009 On Microsoft.SqlServer.Dts.Pipeline.Wrapper.IDTSExternalMetadataColumnCollection90.get_Item(Object Index)
The thing is this happens after looping roughly 55 times but there are still about 100 columns that it needs to loop through still.
Code Block
Dim input As IDTSInput90 = data_destination.InputCollection(0) Dim virtual_input As IDTSVirtualInput90 = input.GetVirtualInput Dim input_column As IDTSInputColumn90 Dim virtual_column As IDTSVirtualInputColumn90
' Iterate through the virtual input column collection and map field names For Each virtual_column In virtual_input.VirtualInputColumnCollection input_column = inst_data_destination.SetUsageType(input.ID, virtual_input, virtual_column.LineageID, DTSUsageType.UT_READONLY)
inst_data_destination.MapInputColumn(input.ID, input_column.ID, input.ExternalMetadataColumnCollection.FindObjectByID(virtual_column.Name).ID) Next
Just for kicks i removed the mapping portion of the code and left in the SetUsageType to see if it would update the available input columns in the destination. The script will then finish successfully but still only the 55 or so fields out of 155 are available in the input. So i then stepped through the script with the mapping portion still disabled and after it loops successfully, i call reinitialize meta data and it produces an error in the input_column variable: HRESULT: 0xC0047041.
I find it odd that this still reports to me that the script finished successfully and I also find it odd that this works fine on two other tables I've tested but not this one. Any insight would be greatly appreciated.
I got a strange problem with SQL Server 2005 data mining models though. I have selected the input columns for my mining model (which are different from the input columns for its mining structure, since I ignored some of the columns for the selected model). But the mining model still used all input columns from the mining structure rather than those I chose for the mining model.
Would please any one here give me any guidance and advices for that. Really need help for that.
In a SSIS Data flow task, whatever you are doing with the input columns that come from a Data source like a Flat File Source, these columns are always visible and available as input columns for all Transformation and Destination components in the Data flow.
Our Custom Component is a column mapping component that transforms many input columns into many oputput columns and we would like that the used input columns are not available anymore to the downstream components...
Is that possible?
I saw that with the Unpivot component it is possible to make some input columns unavailable to downstream components...So I think there is a way to do the same in a custom component...
