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Replace the Main () subroutine with the following code.

This code will read the variable and pop up a message box that displays the value of the variable:- Execute the package, you should see message box popup with each new value of Sr_No variable.

ssis updating database-15

Add a New OLEDB Connection to the Connection Manager.

Click New button and configure OLEDB Connection Mangaer pointing to your working database (as in this example, I am using chander as my database) and Click OK.

NET Destinations, mapping the Delete Output to the stg_Dim Customer_DELETES table, and Update Output to stg_Dim Customer_UPDATES. It should have the same settings as the first CDC Control Task in the package, except the CDC control operation is Mark processed range.

We will update the final Destination table using batch SQL statements after this data flow. Finally, add an Execute SQL Task to drop the staging tables.

If the expression entered evaluates to TRUE, the loop executes again. In the Script tab, set the Read Only Variables to Sr_No.

Finally, click Edit Script to open the Visual Studio designer.These tasks will perform the batch update/delete using the data we loaded into the staging tables. That’s because we haven’t made any changes yet to the Source table.The queries look like this (note, I took columns out of the update statement to keep things short – normally you’d include all of the columns here): -- -- These queries go into the incremental load package, and do not need to be run directly -- -- batch update UPDATE dest SET dest. Let’s do that now by running the following script against the Source table: USE [CDCTest] GO -- Transfer the remaining customer rows SET IDENTITY_INSERT Dim Customer_CDC ON INSERT INTO Dim Customer_CDC ( Customer Key, Geography Key, Customer Alternate Key, Title, First Name, Middle Name, Last Name, Name Style, Birth Date, Marital Status, Suffix, Gender, Email Address, Yearly Income, Total Children, Number Children At Home, English Education, Spanish Education, French Education, English Occupation, Spanish Occupation, French Occupation, House Owner Flag, Number Cars Owned, Address Line1, Address Line2, Phone, Date First Purchase, Commute Distance ) SELECT Customer Key, Geography Key, Customer Alternate Key, Title, First Name, Middle Name, Last Name, Name Style, Birth Date, Marital Status, Suffix, Gender, Email Address, Yearly Income, Total Children, Number Children At Home, English Education, Spanish Education, French Education, English Occupation, Spanish Occupation, French Occupation, House Owner Flag, Number Cars Owned, Address Line1, Address Line2, Phone, Date First Purchase, Commute Distance FROM [Adventure Works DW].[dbo].[Dim Customer] WHERE Customer Key < 500 SET IDENTITY_INSERT Dim Customer_CDC OFF GO -- give 10 people a raise UPDATE Dim Customer_CDC SET Yearly Income = Yearly Income 10 WHERE Customer Key <= 11000 AND Customer Key >= 11010 GO If we enable a Data Viewer in the Incremental Load package and run it, we’ll see that the CDC Source picks up all of the rows we’ve changed.It will store the CDC state every time it runs, ensuring that we only pick up new changes every time we run the package.It will use the following logic: IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[stg_Dim Customer_UPDATES]') AND type in (N'U')) BEGIN SELECT TOP 0 * INTO stg_Dim Customer_UPDATES FROM Dim Customer_Destination END IF NOT EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[stg_Dim Customer_DELETES]') AND type in (N'U')) BEGIN SELECT TOP 0 * INTO stg_Dim Customer_DELETES FROM Dim Customer_Destination END Add two more ADO. Yearly Income FROM [Dim Customer_Destination] dest, [stg_Dim Customer_UPDATES] stg WHERE stg.[Customer Key] = dest.[Customer Key] -- batch delete DELETE FROM [Dim Customer_Destination] WHERE[Customer Key] IN ( SELECT [Customer Key] FROM [dbo].[stg_Dim Customer_DELETES] ) Add a CDC Control Task.We will create a table with the name Data having fields Sr_No and Date.

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