Adding Lookup Programmatically:How Can I Add Column From Reference Dataset To The Transformation?
Jun 19, 2007
Hello,
I have created SSIS package programmatically, I want to add Lookup transformation,
How can I add column from reference dataset to the transformation?
I have try to add new output column but it gives me an validation error, I write following coed to add new output column to lookup.
IDTSOutputColumn90 outputColumn = this.lookup.OutputCollection[0].OutputColumnCollection.New();
outputColumn.Name = col.Name;
outputColumn.Description = "Staging table output";
outputColumn.TruncationRowDisposition = DTSRowDisposition.RD_FailComponent;
outputColumn.ErrorOrTruncationOperation = "Copy Column";
outputColumn.SetDataTypeProperties(col.DataType, col.Length, col.Precision, col.Scale, col.CodePage);
Please suggest other way to add column from reference dataset to transformation output.
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May 25, 2006
I am trying to create a package that reads an input file or input table, does a fuzzy lookup, and outputs results to another table. I was wondering if this can be done programmatically? I have tried adding the fuzzy lookup component like this:
IDTSComponentMetaData90 FuzzyLookupDF = dataFlow.ComponentMetaDataCollection.New();
FuzzyLookupDF.ComponentClassID = "Fuzzy Lookup";
FuzzyLookupDF.Name = "FuzzyLookup";
I wondering how I can change the properties, such as what the input column is, reference table, lookup column, etc? I am not even sure if this can be done; if it can, I'd like some guidance on what the properties I would need to change are.
Thanks!
amber
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May 8, 2008
Hi guys,
I need to use a SQL statement to lookup a value from a SQL server database table that relates to a column in my dataflow.
Imagine a SQL database table called 'cars' with values of
Year | Description
2005 Ferrari 355
2005 Ferrari 355 Spider
2006 Ferrari 355 F1
In my data flow I have Year and Model eg.
Year | Model
2005 355
2006 355
In my SQL statement I want to select from the 'cars' table where the years match exactly but the 'description' is like the 'Model'. eg. %355%
So essentially, how do I construct the 'like' clause in the select statement to reference the 'Model' column please?
thanks for your help,
Chris
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Mar 31, 2008
The logic I am trying to recreate via SSIS is the following SQL statement:
insert into db3.dbo.targettable1 -- Target database table
(SiteC,
Objecte,
Attrib1)
select distinct ?,
?,
from ? -- Source database table
join dbo.targettable2 c1 -- Target database table
on c1.Alias = ? and
c1.CSetID = ? and
c1.FacID = (select f.PFacID
from dbo.Fac f
where f.FacID = ?)
where not exists (select * from dbo.targettable2 c -- Target database table
where c.Alias = ? and
c.FacID = ? and
c.CSetID = ?)
I have an OLE DB Source that consists of an expression to approximate the following portion of the Above Select statement:
Select ?,
from ? -- Source database table and
The package has 2 global variables User:CSetID and User::FacID whose scope is global to the package and whose values are set within a Foreach Loop Container outside of the Data Flow Task
I was trying to reference the 2 global variables within the Looup Transformation to recreate the following portion of the SQL statement.but encounter errors:
join dbo.targettable2 c1 -- Target database table
on c1.Alias = ? and
c1.CSetID = ? and
c1.FacID = (select f.PFacID
from dbo.Fac f
where f.FacID = ?)
In the Advanced Editor window of Lookup Transaction
select * from
(select * from [dbo].[targettable2 ]) as refTable
where [refTable].[Alias] = ? and [refTable].[FacID] = ? and
[refTable].[CSetID] = ?
Is there away to reference global variables in a Lookup Transformation that are set outside a Data Task Flow?
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Jul 1, 2015
My source has 2.2 million of records. I'm performing the incremental load.In the lookup transformation i used the destination table for the reference using Full cache mode.For the first time package executed successfully but when i executed the package second time, Suddenly Package hangs while running.Than i truncate the data from the destination table and restart the SQL Server Services.After doing all this i executed package again and it worked but when i executed package second time, again package hangs up .I have 8GB RAM and i5 2.5 GHz Processor laptop.
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Sep 1, 2006
Does anyone have a clue as to why DT_R4, DT_R8 are not allowed as join columns? This means I cannot join tables on AccountNumbers, InvoiceNumbers, etc. What a pain...
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Mar 14, 2006
Hi,
I am mapping an entity from SQL 2005 to another entity in another system on SQL 2000. Since the destination system has its own ID generator, I want to keep the generated ID for each row of my table in a column of my table in SQL 2005. The new column is in the dataset now , but I don't know how to update my table to have that column values (The OleDbDestination just insert new items.)
Samy
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Nov 9, 2006
hi,
i am having 2 columns in a table in a dataset.
i want to add those two columns and bind the resultant total as a single column to the datagrid.
is it possible.
if yes, how o acheive this?
please help me.
thanks in advance.
muppidi.
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Oct 1, 2015
I have a small number of rows in a dataset, Table 1. There is a CLOB on a large dataset, Table 2. They join on a PK. I would like to retrieve this CLOB and add it to the data flow for Table1. In short I want to emulate the following:
Table 1:Â Small table without CLOB, 10 rows.Â
Table 2: Large table with CLOB, 10,000,000 rows
select CLOB
from table2
where pk = (select pk from table1)
I want this to return the CLOBs for the small number of rows in Table 1. The PK is indexed obviously so it should be a fast look up.
Table 1 and Table 2 live on different Oracle databases. How do I perform this operation efficiently in SSIS? It seems the Lookup and Merge Join wont do this.
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Sep 26, 2007
I'm working with an existing package that uses the fuzzy lookup transform. The package is currently working; however, I need to add some columns to the lookup columns from the reference table that is being used.
It seems that I am hitting a memory threshold of some sort, as when I add 3 or 4 columns, the package works, but when I add 5 columns, the fuzzy lookup transform fails pre-execute:
Pre-Execute
Taking a snapshot of the reference table
Taking a snapshot of the reference table
Building Fuzzy Match Index
component "Fuzzy Lookup Existing Member" (8351) failed the pre-execute phase and returned error code 0x8007007A.
These errors occur regardless of what columns I am attempting to add to the lookup list.
I have tried setting the MaxMemoryUsage custom property of the transform to 0, and to explicit values that should be much more than enough to hold the fuzzy match index (the reference table is only about 3000 rows, and the entire table is stored in less than 2MB of disk space.
Any ideas on what else could be causing this?
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Nov 20, 2006
Does anyone have any examples of programmatically creating a Transformation Script Component (or Source/Destination) in the dataflow? I have been able to create other Transforms for the dataflow like Derived Column, Sort, etc. but for some reason the Script Component doesn't seem to work the same way.
I have done it as below trying many ways to get the componentClassId including the AssemblyQualifiedname & the GUID as well. No matter, what I do, when it hits the ProvideComponentProperties, it get Exception from HRESULT: 0xC0048021
IDTSComponentMetaData90 scriptPropType = dataFlow.ComponentMetaDataCollection.New();
scriptPropType.Name = "Transform Property Type";
scriptPropType.ComponentClassID = "DTSTransform.ScriptComponent";
// have also tried scriptPropType.ComponentClassID =typeof(Microsoft.SqlServer.Dts.Pipeline.ScriptComponent).AssemblyQualifiedName;
scriptPropType.Description = "Transform Property Type";
CManagedComponentWrapper instance2 = scriptPropType.Instantiate();
instance2.ProvideComponentProperties();
Any help or examples would be greatly appreciated! Thanks!
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May 10, 2006
Hello,
does anyone know of a good example of how to programmatically add a Data Conversion Transformation to a package? I have come so far that I have the component in my dataflow task, but I don't know how to set the properties of it. That is, how to determine the columns that should be converted and to what data type etc.
I (as far as I understand) need a data conversion transformation since I have not managed to create (via the designer) a package that reads data from an AS400 via DB2OLEDB and stores it in a SQL Server 2005 Database. I keep getting the error "string cannot be converted from unicode to non-unicode" (or something like that) and by searching this forum I learned that the data conversion component might do the trick.
I added this conversion to a manually designed package and it solved the error, but I don't know how to re-create this package programmatically. I would really appreciate some help on this.
Also, if someone has managed to import data from AS400 to SQL server 2005 via OLEDB and NOT got the string conversion error, please let me know!
Regards,
Annika
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Oct 31, 2006
Hi,
i'm creating a Lookup programmatically. But i can't find out how to assign the ConnectionManager that references the lookup data.
Do you have an example for me?
Many thanks in advance.
Stefan L.
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Aug 1, 2007
Hi All,
I am doing something really simple and it doesnt work, may be I am missing something, What I am trying to accomplish is to load a fact table using lookup transaformation, however my source data was different from the data in my dimension (or the datatype ) I had to use a data conversion task before my lookup , so the data flow is something like this source -> Data Conversion -> Lookup -> destination , I am getting an error at my lookup task where it says the "[Lookup [82]] Error: Row yielded no match during lookup". and then it just fails. I know for sure that there has to be matching data. donno what is it that I am missing.
Thanks
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Jan 8, 2007
Is there a way to ignore the unmatched rows using Lookup without creating another destination (Error Transformation for red connector)?
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Nov 27, 2007
Hi,
I am totally new to SSIS.
I need an example of how to use a Lookup transformation. Basd on that i need to lookup for some recs and delete records from transaction table. I have used the Execute SQL task for this and i am able to achive my requirement. But now i am using XML configurations for Connection Managers and for that very reason i dont want to hard code the catalog names(database names) inside my Execute SQL task.
Can any one suggest me how to do the same using a Lookup transformation or any other.
Any suggestions will be greatly appreciated.
Thank Q,
priya
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Dec 24, 2007
Hi,
I have a Dataflow task which loads data from a flat file to a Fact table named Inventory , doing a dimensional Key lookup with DIMStores - which is the dimension table for stores information.
If I have some rows in the flatfile whose 'Store' column doesnt have a corresponsing key in the DIMStores table, I want to insert all these stores in to DIMStores table and then update the Inventory table accordingly ..
Any idea how do to this ?
Thanks in Advance,
Sun
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Feb 27, 2008
I have a question based on Lookup Transformation component. If using Lookup component, the data cannot be NULL for available columns mapping. How about I want to keep the NULL value like outer join instead of inner join? Is there any way to do since I have several Lookup components inside of my dataflow?
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Mar 27, 2006
Hi Everyone,
I'm trying to perform a lookup transformation. But the deal is, I have this one value that I am passing into the transformation, but I would like to gather all values that match the value I put in....does the lookup transformation do this? I tried it, and it appears as if it only returns one value for the one input. After the lookup, I have an access OLE DB destination setup...so I can capture all those values that corresponds to that one value I passed into the lookup. Does anyone have any ideas on how I can go about this?
Thanks!
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Nov 9, 2007
Below is C# code used to create a FuzzyLookup SSIS package programmatically. It does 95% of what I need it to. The only thing missing that I cannot figure out is how to take a Fuzzy Lookup Input column (OLE DB Output Column) and make it "pass through" the fuzzy lookup component to the OLE DB Destination. In the example below, that means I need the QuarantinedEmployeeId to make it into the destination.
Look in the "Test Dependencies" region below to get instructions and scripts used to set assembly references, create the sample tables used for this example, and insert test data.
Can anyone help me get past this last hurdle? You will see at the end of my Fuzzy Lookup region a bunch of commented out code that I've used to try to accomplish this last problem.
Code Block
using Microsoft.SqlServer.Dts.Runtime;
using Microsoft.SqlServer.Dts.Pipeline.Wrapper;
namespace CreateSsisPackage
{
public class TestFuzzyLookup
{
public static void Test()
{
#region Test Dependencies
// Assembly references:
// Microsoft.SqlServer.DTSPipelineWrap
// Microsoft.SQLServer.DTSRuntimeWrap
// Microsoft.SQLServer.ManagedDTS
// First create a database called TestFuzzyLookup
// Next, create tables:
//SET ANSI_NULLS ON
//GO
//SET QUOTED_IDENTIFIER ON
//GO
//CREATE TABLE [dbo].[EmployeeMatch](
// [RecordId] [int] IDENTITY(1,1) NOT NULL,
// [EmployeeId] [int] NOT NULL,
// [QuarantinedEmployeeId] [int] NOT NULL,
// [_Similarity] [real] NOT NULL,
// [_Confidence] [real] NOT NULL,
// CONSTRAINT [PK_EmployeeMatch] PRIMARY KEY CLUSTERED
//(
// [RecordId] ASC
//)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]
//) ON [PRIMARY]
//GO
//SET ANSI_NULLS ON
//GO
//SET QUOTED_IDENTIFIER ON
//GO
//CREATE TABLE [dbo].[QuarantinedEmployee](
// [QuarantinedEmployeeId] [int] IDENTITY(1,1) NOT NULL,
// [QuarantinedEmployeeName] [varchar](50) NOT NULL,
// CONSTRAINT [PK_QuarantinedEmployee] PRIMARY KEY CLUSTERED
//(
// [QuarantinedEmployeeId] ASC
//)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]
//) ON [PRIMARY]
//GO
//SET ANSI_NULLS ON
//GO
//SET QUOTED_IDENTIFIER ON
//GO
//CREATE TABLE [dbo].[Employee](
// [EmployeeId] [int] IDENTITY(1,1) NOT NULL,
// [EmployeeName] [varchar](50) NOT NULL,
// CONSTRAINT [PK_Employee] PRIMARY KEY CLUSTERED
//(
// [EmployeeId] ASC
//)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]
//) ON [PRIMARY]
// Next, insert test data
//insert into employee values ('John Doe')
//insert into employee values ('Jane Smith')
//insert into employee values ('Ryan Johnson')
//insert into quarantinedemployee values ('John Dole')
#endregion Test Dependencies
#region Create Package
// Create a new package
Package package = new Package();
package.Name = "FuzzyLookupTest";
// Add a Data Flow task
TaskHost taskHost = package.Executables.Add("DTS.Pipeline") as TaskHost;
taskHost.Name = "Fuzzy Lookup";
IDTSPipeline90 pipeline = taskHost.InnerObject as MainPipe;
// Get the pipeline's component metadata collection
IDTSComponentMetaDataCollection90 componentMetadataCollection = pipeline.ComponentMetaDataCollection;
#endregion Create Package
#region Source
// Add a new component metadata object to the data flow
IDTSComponentMetaData90 oledbSourceMetadata = componentMetadataCollection.New();
// Associate the component metadata object with the OLE DB Source Adapter
oledbSourceMetadata.ComponentClassID = "DTSAdapter.OLEDBSource";
// Instantiate the OLE DB Source adapter
IDTSDesigntimeComponent90 oledbSourceComponent = oledbSourceMetadata.Instantiate();
// Ask the component to set up its component metadata object
oledbSourceComponent.ProvideComponentProperties();
// Add an OLE DB connection manager
ConnectionManager connectionManagerSource = package.Connections.Add("OLEDB");
connectionManagerSource.Name = "OLEDBSource";
// Set the connection string
connectionManagerSource.ConnectionString = "Data Source=localhost;Initial Catalog=TestFuzzyLookup;Provider=SQLNCLI.1;Integrated Security=SSPI;Auto Translate=False;";
// Set the connection manager as the OLE DB Source adapter's runtime connection
IDTSRuntimeConnection90 runtimeConnectionSource = oledbSourceMetadata.RuntimeConnectionCollection["OleDbConnection"];
runtimeConnectionSource.ConnectionManagerID = connectionManagerSource.ID;
// Tell the OLE DB Source adapter to use the source table
oledbSourceComponent.SetComponentProperty("OpenRowset", "QuarantinedEmployee");
oledbSourceComponent.SetComponentProperty("AccessMode", 0);
// Set up the connection manager object
runtimeConnectionSource.ConnectionManager = DtsConvert.ToConnectionManager90(connectionManagerSource);
// Establish the database connection
oledbSourceComponent.AcquireConnections(null);
// Set up the column metadata
oledbSourceComponent.ReinitializeMetaData();
// Release the database connection
oledbSourceComponent.ReleaseConnections();
// Release the connection manager
runtimeConnectionSource.ReleaseConnectionManager();
#endregion Source
#region Fuzzy Lookup
// Add a new component metadata object to the data flow
IDTSComponentMetaData90 fuzzyLookupMetadata = componentMetadataCollection.New();
// Associate the component metadata object with the Fuzzy Lookup object
fuzzyLookupMetadata.ComponentClassID = "DTSTransform.BestMatch.1";
// Instantiate
IDTSDesigntimeComponent90 fuzzyLookupComponent = fuzzyLookupMetadata.Instantiate();
// Ask the component to set up its component metadata object
fuzzyLookupComponent.ProvideComponentProperties();
// Add an OLE DB connection manager
ConnectionManager connectionManagerFuzzy = package.Connections.Add("OLEDB");
connectionManagerFuzzy.Name = "OLEDBFuzzy";
// Set the connection string
connectionManagerFuzzy.ConnectionString = "Data Source=localhost;Initial Catalog=TestFuzzyLookup;Provider=SQLNCLI.1;Integrated Security=SSPI;Auto Translate=False;";
// Set the connection manager as the fuzzy lookup component's runtime connection
IDTSRuntimeConnection90 runtimeConnectionFuzzy = fuzzyLookupMetadata.RuntimeConnectionCollection["OleDbConnection"];
runtimeConnectionFuzzy.ConnectionManagerID = connectionManagerFuzzy.ID;
// Set up the connection manager object
runtimeConnectionFuzzy.ConnectionManager = DtsConvert.ToConnectionManager90(connectionManagerFuzzy);
// Establish the database connection
fuzzyLookupComponent.AcquireConnections(null);
// Set up the external metadata column
fuzzyLookupComponent.ReinitializeMetaData();
// Release the database connection
fuzzyLookupComponent.ReleaseConnections();
// Release the connection manager
runtimeConnectionFuzzy.ReleaseConnectionManager();
// Get the standard output of the OLE DB Source adapter
IDTSOutput90 oledbSourceOutput = oledbSourceMetadata.OutputCollection["OLE DB Source Output"];
// Get the input of the Fuzzy Lookup component
IDTSInput90 fuzzyInput = fuzzyLookupMetadata.InputCollection["Fuzzy Lookup Input"];
// Create a new path object
IDTSPath90 path = pipeline.PathCollection.New();
// Connect the source to Fuzzy Lookup
path.AttachPathAndPropagateNotifications(oledbSourceOutput, fuzzyInput);
// Get the output column collection for the OLE DB Source adapter
IDTSOutputColumnCollection90 oledbSourceOutputColumns = oledbSourceOutput.OutputColumnCollection;
// Get the external metadata column collection for the fuzzy lookup component
IDTSExternalMetadataColumnCollection90 externalMetadataColumns = fuzzyInput.ExternalMetadataColumnCollection;
// Get the virtual input for the fuzzy lookup component
IDTSVirtualInput90 virtualInput = fuzzyInput.GetVirtualInput();
// Loop through output columns and relate columns that will be fuzzy matched on
foreach (IDTSOutputColumn90 outputColumn in oledbSourceOutputColumns)
{
IDTSInputColumn90 col = fuzzyLookupComponent.SetUsageType(fuzzyInput.ID, virtualInput, outputColumn.LineageID, DTSUsageType.UT_READONLY);
if (outputColumn.Name == "QuarantinedEmployeeName")
{
// column name is one of the columns we'll match with
fuzzyLookupComponent.SetInputColumnProperty(fuzzyInput.ID, col.ID, "JoinToReferenceColumn", "EmployeeName");
fuzzyLookupComponent.SetInputColumnProperty(fuzzyInput.ID, col.ID, "MinSimilarity", 0.6m);
// set to be fuzzy match (not exact match)
fuzzyLookupComponent.SetInputColumnProperty(fuzzyInput.ID, col.ID, "JoinType", 2);
}
}
fuzzyLookupComponent.SetComponentProperty("MatchIndexOptions", 1);
fuzzyLookupComponent.SetComponentProperty("MaxOutputMatchesPerInput", 100);
fuzzyLookupComponent.SetComponentProperty("ReferenceTableName", "Employee");
fuzzyLookupComponent.SetComponentProperty("WarmCaches", true);
fuzzyLookupComponent.SetComponentProperty("MinSimilarity", 0.6);
IDTSOutput90 fuzzyLookupOutput = fuzzyLookupMetadata.OutputCollection["Fuzzy Lookup Output"];
// add output columns that will simply pass through from the reference table (Employee)
IDTSOutputColumn90 outCol = fuzzyLookupComponent.InsertOutputColumnAt(fuzzyLookupOutput.ID, 0, "EmployeeId", "");
outCol.SetDataTypeProperties(Microsoft.SqlServer.Dts.Runtime.Wrapper.DataType.DT_I4, 0, 0, 0, 0);
fuzzyLookupComponent.SetOutputColumnProperty(fuzzyLookupOutput.ID, outCol.ID, "CopyFromReferenceColumn", "EmployeeId");
// add output columns that will simply pass through from the oledb source (QuarantinedEmployeeId)
//IDTSOutput90 sourceOutputCollection = oledbSourceMetadata.OutputCollection["OLE DB Source Output"];
//IDTSOutputColumnCollection90 sourceOutputCols = sourceOutputCollection.OutputColumnCollection;
//foreach (IDTSOutputColumn90 outputColumn in sourceOutputCols)
//{
// if (outputColumn.Name == "QuarantinedEmployeeId")
// {
// IDTSOutputColumn90 col = fuzzyLookupComponent.InsertOutputColumnAt(fuzzyLookupOutput.ID, 0, outputColumn.Name, "");
// col.SetDataTypeProperties(
// outputColumn.DataType, outputColumn.Length, outputColumn.Precision, outputColumn.Scale, outputColumn.CodePage);
// //fuzzyLookupComponent.SetOutputColumnProperty(
// // fuzzyLookupOutput.ID, col.ID, "SourceInputColumnLineageId", outputColumn.LineageID);
// }
//}
// add output columns that will simply pass through from the oledb source (QuarantinedEmployeeId)
//IDTSInput90 fuzzyInputCollection = fuzzyLookupMetadata.InputCollection["Fuzzy Lookup Input"];
//IDTSInputColumnCollection90 fuzzyInputCols = fuzzyInputCollection.InputColumnCollection;
//foreach (IDTSInputColumn90 inputColumn in fuzzyInputCols)
//{
// if (inputColumn.Name == "QuarantinedEmployeeId")
// {
// IDTSOutputColumn90 col = fuzzyLookupComponent.InsertOutputColumnAt(fuzzyLookupOutput.ID, 0, inputColumn.Name, "");
// col.SetDataTypeProperties(
// inputColumn.DataType, inputColumn.Length, inputColumn.Precision, inputColumn.Scale, inputColumn.CodePage);
// fuzzyLookupComponent.SetOutputColumnProperty(
// fuzzyLookupOutput.ID, col.ID, "SourceInputColumnLineageId", inputColumn.LineageID);
// }
//}
#endregion Fuzzy Lookup
#region Destination
// Add a new component metadata object to the data flow
IDTSComponentMetaData90 oledbDestinationMetadata = componentMetadataCollection.New();
// Associate the component metadata object with the OLE DB Destination Adapter
oledbDestinationMetadata.ComponentClassID = "DTSAdapter.OLEDBDestination";
// Instantiate the OLE DB Destination adapter
IDTSDesigntimeComponent90 oledbDestinationComponent = oledbDestinationMetadata.Instantiate();
// Ask the component to set up its component metadata object
oledbDestinationComponent.ProvideComponentProperties();
// Add an OLE DB connection manager
ConnectionManager connectionManagerDestination = package.Connections.Add("OLEDB");
connectionManagerDestination.Name = "OLEDBDestination";
// Set the connection string
connectionManagerDestination.ConnectionString = "Data Source=localhost;Initial Catalog=TestFuzzyLookup;Provider=SQLNCLI.1;Integrated Security=SSPI;Auto Translate=False;";
// Set the connection manager as the OLE DBDestination adapter's runtime connection
IDTSRuntimeConnection90 runtimeConnectionDestination = oledbDestinationMetadata.RuntimeConnectionCollection["OleDbConnection"];
runtimeConnectionDestination.ConnectionManagerID = connectionManagerDestination.ID;
// Tell the OLE DB Destination adapter to use the destination table
oledbDestinationComponent.SetComponentProperty("OpenRowset", "EmployeeMatch");
oledbDestinationComponent.SetComponentProperty("AccessMode", 0);
// Set up the connection manager object
runtimeConnectionDestination.ConnectionManager = DtsConvert.ToConnectionManager90(connectionManagerDestination);
// Establish the database connection
oledbDestinationComponent.AcquireConnections(null);
// Set up the external metadata column
oledbDestinationComponent.ReinitializeMetaData();
// Release the database connection
oledbDestinationComponent.ReleaseConnections();
// Release the connection manager
runtimeConnectionDestination.ReleaseConnectionManager();
// Get the standard output of the fuzzy lookup componenet
IDTSOutput90 fuzzyLookupOutputCollection = fuzzyLookupMetadata.OutputCollection["Fuzzy Lookup Output"];
// Get the input of the OLE DB Destination adapter
IDTSInput90 oledbDestinationInput = oledbDestinationMetadata.InputCollection["OLE DB Destination Input"];
// Create a new path object
IDTSPath90 ssisPath = pipeline.PathCollection.New();
// Connect the source and destination adapters
ssisPath.AttachPathAndPropagateNotifications(fuzzyLookupOutputCollection, oledbDestinationInput);
// Get the output column collection for the OLE DB Source adapter
IDTSOutputColumnCollection90 fuzzyLookupOutputColumns = fuzzyLookupOutputCollection.OutputColumnCollection;
// Get the external metadata column collection for the OLE DB Destination adapter
IDTSExternalMetadataColumnCollection90 externalMetadataCols = oledbDestinationInput.ExternalMetadataColumnCollection;
// Get the virtual input for the OLE DB Destination adapter.
IDTSVirtualInput90 vInput = oledbDestinationInput.GetVirtualInput();
// Loop through our output columns
foreach (IDTSOutputColumn90 outputColumn in fuzzyLookupOutputColumns)
{
// Add a new input column
IDTSInputColumn90 inputColumn = oledbDestinationComponent.SetUsageType(oledbDestinationInput.ID,
vInput, outputColumn.LineageID, DTSUsageType.UT_READONLY);
// Get the external metadata column from the OLE DB Destination
// using the output column's name
IDTSExternalMetadataColumn90 externalMetadataColumn = externalMetadataCols[outputColumn.Name];
// Map the new input column to its corresponding external metadata column.
oledbDestinationComponent.MapInputColumn(oledbDestinationInput.ID, inputColumn.ID, externalMetadataColumn.ID);
}
#endregion Destination
// Save the package
Application application = new Application();
application.SaveToXml(@"c:TempTestFuzzyLookup.dtsx", package, null);
}
}
}
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May 11, 2000
I have a question. I'm using a lookup table which contains descriptions for a field from one of my tables. I have added a lookup query that looks like this:
SELECT STORE_DESRIP, BANNER, STORE_ID
FROM `stores.txt`
WHERE (STORE_ID = ?)
My main table (stagging) contains the store_id field. What I want to do is populate my destination fields (Store_descriptin and Banner) from the lookup table, based on the Store_id. I have written an ActiveX script that looks like this:
Function Main()
DTSDestination("Store_id") = DTSSource("store_id")
DTSDestination("Store_description") = DTSLookup("storelookup").Execute(DTSSource("store_ id")).value
Main = DTSTransformStat_OK
End Function
I receive an error when I try to test this script. It complains about line 8, which is the line that contains the DTSLookup function. Does anyone have any ideas what I'm doing wrong?
The process I see here is that when it comes to populating the "Store_description" field is will look the lookup table and based on the store_id, pass the description back. I would also like to add another destination field into this script, but won't until I resolve this.
Thanks for yoour support.
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Nov 8, 2006
Hello,
I have a table like this:
Customer
Group
A
10
B
20
I need to do a translation of "group" to €œlocal group€?:
Customer
Group
Local Group
A
10
11
B
20
21
When a match is found, the group code should be replaced by the local group code ... but, when no match is found the group code should stay.
Is there any way to do this using Lookup ? I tried but when you set the error output to ignore it replaces the value that has no match with a NULL value. Maybe there is another way to get this done with or without the lookup component ?
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Mar 31, 2008
I have a lookup transformation that retrieves a key for a certain column of values, in this case, a name. So, I go in to the lookup table with a name and come out with its key. I had it working and then I added new entries to the lookup table for a bunch of new names. Now, for some reason, I am not getting the matches for the new names. But I am still getting the matches for the names that existed before I added the new ones.
I'm wondering if the lookup transformation is using the old set of data and some how not picking up the new names. Do I have to trigger something in the lookup transformation to let it know that the lookup table data has changed?
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Sep 21, 2006
Hello all,
I needed to lookup some table values based on a join of two fields...
I've configured the lookup transform to get the values via a SQL statement to minimize loading time.
However, when creating the relationships between the input columns and the lookup columns I receive following error:
input column [BATCH_ID] has a datatype which cannot be joined on
I've checked both input and lookup columns, both are of type DT_R8... Both columns in the different tables do have the same datatypes
Any idea how to solve this problem??
Thanks in advance
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Oct 16, 2007
How to compare NULL to NULL in Lookup transformation?
I have a column (key) that has NULL value
and In my look up table, i assign NULL to -1, so i can get -1 when I join key to CD ( in lookup) ...
Num CD
-1 NULL
1 12
2 56
but when i run my package I keep getting no matching record.. i thnk it;s because of NULL value...
how can I resolve this?
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Dec 10, 2007
I've been going round in circles trying to understand what design I should use for a particular transformation/lookup problem I have. Would appreciate a few pointers.
On the data flow, I can create the data source easily with a SQL Query that returns 4 columns...
eg. myDb.dbo.Table1
Col1,
Col2,
Col3,
Col4
The end result at the Destination is:-
myDb.dbo.Table2
Col1,
Col5
Table1.Col1 maps directly to Table2.Col1 -- easy
Table2.Col5 is a result of a lookup query to different tables in the same db based on the value of Table1.Col1, Table1.Col2 & Table1.Col3.
I've already had problems with the Lookup component that forced me to give up using it because it wouldn't adequately support parameters. I was forced to use the Script component instead. However, this problem is a bit different because I don't need to try and reference variables as parameters and, instead, I need to use the values from the source query (Col1, Col2 & Col3).
Suggestions?
Thanks in advance,
Clive
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Jul 2, 2007
Hi,
There is one data flow task in the package. I have a column in the input set called "ID". The total number of rows in the input set is > 50000.
There is one table in the database which has the description for all the IDs. I need to get the "Description" value from the database for each row. The table contains nearly 12 lack records.
For that I am using lookup transformation. In lookup, I specified the query and column mapping and I got the new column "Description".
Here is the problem.
while running the package, the lookup is getting all the 12 lack rows from table and then it is matching the rows.
It is taking huge time.
Can any one suggest me how to improve the performance of this situation?
Thanks in advance.
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Oct 22, 2007
Hi all
when using advanced tab in lookup transformation ?, for whatany suggest i will be appreciated , thanks in advance
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Mar 6, 2007
Hi,
I just wanted to know if there is any way to Allow Null values while doing a lookup on a table in SSIS.
Let me elaborate the situation...
I have a flat file source that has a field called 'code'. I want to lookup in a code table to see if the code in the file is a valid code but the flat file may contain a NULL value as a 'code' (i.e. zero length string which treated as NULL by my package).
My problem is, the SSIS package tries to search for the NULL in the table and the lookup fails and an error is logged as per the business logic but actually NULL is also an acceptable value and the error should not be logged.
I tried inserting a NULL value in the lookup column but that doesn't work. I am not sure but I think I have read somewhere that two null values cannot be compared for equality. I cannot use conditional split to check the null value because I have to use a large number of lookups and a conditional split everywhere will mess up the things.
Is there any way to solve this problem?
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Oct 15, 2007
I have the following query:
SELECT EMPID,EMPNAME from EMPLOYEE
where EMPID = (SELECT MAX(EMPID) from EMPLOYEE group by EMPNAME,insert_date)
Here one can use above query in Dataflow of SSIS and specify SQL to create temporary table and later can use as lookup to join to other table.
Is there any way in SSIS to directly do the MAX of EMPID in lookup and join to the main source table.
Any help is really appreciated.
Thanks.
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Feb 21, 2008
I may have misunderstood how Lookupu works because it's not doing what I want.
From the OLTP datasource I have a long list of revenue items (from a SQL server database). I want to assign these to specific accounts as they are transferred into our accounting system. I have another table with a list of words to search for and which account they belong to.
For example if the OLTP source might be
Description - Amount
"Sales of cars"- "$20,000"
"Motorcycle sales" - "$15,000"
"Bike rentals" - "$2,000"
The account lookup table is like
Wordsearch - Account
"sale" - "ACCT_SAL"
"rental" - "ACCT_RENT"
So by looking up whether "wordsearch" is found in "desription" I should get an output of
ACCT_SAL - $20,000
ACCT_SAL - $15,000
ACCT_RENT - $2,000
Back in DTS I did this with an array and "If Instr" using VBScript in the Data Transformation Task. I'm sure there must be something in SSIS to do this - it should be something like a Fuzzy Lookup ?, but I'm drifting toward Script Component. Anyone got any ideas for SSIS
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Nov 30, 2006
Hi,
Here is my problem for a lookup transformation:
I have an input flow with dates and fields like this :
ID BEGINNING_DATE ENDING_DATE
1 12/01/2006 12/16/2006
and a reference table like this:
ID PRICE BEGINNING_PRICE_DATE ENDING_PRICE_DATE
1 400 11/28/2006 12/03/2006
1 500 12/03/2006 12/06/2006
1 600 12/06/2006 12/09/2006
I have to get the intersection periods between the two tables joining on ID. I would like to have this result flow :
ID BEGINNING_DATE ENDING_DATE PRICE
1 12/01/2006 12/03/2006 400
1 12/03/2006 12/06/2006 500
1 12/06/2006 12/09/2006 600
I'm using a lookup transformation and modifying the SQL instruction in advanced tab like this:
select *
from
(select * from [dbo].[Price]) as refTable
where [refTable].[ID] = ?
and (? between [refTable].[BEGINNING_PRICE_DATE] and [refTable].[ENDING_PRICE_DATE]
or ? between [refTable].[BEGINNING_PRICE_DATE] and [refTable].[ENDING_PRICE_DATE]
or ([refTable].[BEGINNING_PRICE_DATE] between ? and ?
and [refTable].[ENDING_PRICE_DATE] between ? and ?))
In that case I have to define 7 parameters:
ID : parameter0
BEGINNING_DATE : parameter1, parameter3, parameter5
ENDING_DATE : parameter2, parameter4, parameter6
My problem is that the transformation looks for only one matching element and outputs 0 or 1 row per input row... In that case the 3 rows of my lookup table are matching with the row in my input table, but I have only the first one.
How could I do to resolve my problem?
Thanks... I hope it's clear...
Arnaud.
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Mar 6, 2008
I used to use Lookup Transformation for my SSIS, now I am having problem and cannot find the problem. I have my source table, one lookup to join source column to my lookup column as L1. I then have another lookup to join L1 to L2, and will show L2. It seems not working. I used to have source to join several lookup and get different Li, not this one. Any help?
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