Transformation Object To Filter Data In Pipeline
Hi,
I have some data coming through pipeline and I wanna add some component at some point to pass on only selected rows based on conditions to the objects onwards. My opinion is I should use conditional split object, but Please suggest me something if you know better.
Thanks,
Fahad
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Hi, I am having a simple difficulty regarding my transformation component that I have created. I followed all of the relevant documentation to create the component, UI and such, and when I run a program that transfers data through my component (without it doing anything to the data) to a flat file source, all I get in the flat file is ,,,,,,,,,, Meaning that the data is not actually being passed through my component to the destination, but it does recongize the correct number of columns. I get this warning for each column: [DTS.Pipeline] Warning: The output column "PurchaseOrderDetailID" (20) on output "OLE DB Source Output" (11) and component "Source - PurchaseOrderDetail" (1) is not subsequently used in the Data Flow task. Removing this unused output column can increase Data Flow task performance. To fix this issue, all I need to do is "check" the boxes in the advanced editor for my component. However, I want to be able have these boxes "checked" automatically. My question is, when you "check" a box next to a column name in the advanced editor, what does that exactly do that allows you to transfer the data? What do I need to program in order for it to replicate that? I actually want it to happen automatically, so by default, all data in all columns are transfered through my component out the other side, so I just need to know how to do this by code, and not how to replicate the UI. My component, I thought, did that automatically, as I specified everything that I thought was required based on all of the documentation I read. Obviously, I am missing something. Here are the methods that I believe would all be involved. Please let me know what I am missing. int[] inputColumnBufferIndexes; // ... int[] outputColumnBufferIndexes; // ... used in PreExecute PipelineBuffer outputBuffer; // used in ProcesInput public override void OnInputPathAttached(int inputID) { IDTSInput90 input = ComponentMetaData.InputCollection.GetObjectByID(inputID); IDTSOutput90 output = ComponentMetaData.OutputCollection[0]; IDTSVirtualInput90 vInput = input.GetVirtualInput(); foreach (IDTSVirtualInputColumn90 vCol in vInput.VirtualInputColumnCollection) { IDTSOutputColumn90 outCol = output.OutputColumnCollection.New(); outCol.Name = vCol.Name; outCol.SetDataTypeProperties(vCol.DataType, vCol.Length, vCol.Precision, vCol.Scale, vCol.CodePage); } } public override void PreExecute() { //base.PreExecute(); IDTSInput90 input = ComponentMetaData.InputCollection[0]; IDTSOutput90 output = ComponentMetaData.OutputCollection[0]; inputColumnBufferIndexes = new int[input.InputColumnCollection.Count]; outputColumnBufferIndexes = new int[output.OutputColumnCollection.Count]; for (int x = 0; x < input.InputColumnCollection.Count; x++) { IDTSInputColumn90 column = input.InputColumnCollection[x]; inputColumnBufferIndexes[x] = BufferManager.FindColumnByLineageID(input.Buffer, column.LineageID); } for (int x = 0; x < output.OutputColumnCollection.Count; x++) { IDTSOutputColumn90 column = output.OutputColumnCollection[x]; outputColumnBufferIndexes[x] = BufferManager.FindColumnByLineageID(output.Buffer, column.LineageID); } } public override void PrimeOutput(int outputs, int[] outputIDs, PipelineBuffer[] buffers) { //base.PrimeOutput(outputs, outputIDs, buffers); if (buffers.Length != 0) { outputBuffer = buffers[0]; } } public override void ProcessInput(int inputID, PipelineBuffer buffer) { //base.ProcessInput(inputID, buffer); if (!buffer.EndOfRowset) { IDTSInput90 input = ComponentMetaData.InputCollection.GetObjectByID(inputID); while (buffer.NextRow()) { // TODO: Examine the columns in the current row. // Add a row to the output buffer. outputBuffer.AddRow(); for (int x = 0; x < inputColumnBufferIndexes.Length; x++) { // Copy the data from the input buffer column to the output buffer column. outputBuffer[outputColumnBufferIndexes[x]] = buffer[inputColumnBufferIndexes[x]]; } } } else { // EndOfRowset on the input buffer is true. // Set EndOfRowset on the output buffer. outputBuffer.SetEndOfRowset(); } }
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Data Transformation Task In SSIS
Hi, How I set the Transform Data Task Property in SSIS package As I designed SSIS where I mapped my text file columns to database table columns but if I selected wrong input text file having less columns than database table then how I will get error that it will not found remaining columns suppose my DB table contain 3 columns and my (wrong) text file contain 2 columns then i should get error message that column003 is not found???? T.I.A
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