In this article we are going to see how to use an Aggregate (COUNT) data flow transformation control in SSIS packaging. With this function operation we can get a Count of the number of rows necessary to get a result in a desired format. Let's jump into to the example of how to use this control in real time.
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Follow steps 1 to 3 in my first article to open the BIDS project and select the right project to work on an integration services project. Once the project is created, we will see how to use an aggregate control for getting the count of the rows of a particular column or a list of columns.
Here we will see the COUNT operation in the aggregate control. I have added an OLEDB connection which fetches the data from the database upon which we are going to do get the Count of the number of rows and then pass it to a file destination as shown in the screen below.
Here the last 2 controls show a red mark inside the control indicating that the control is not configured. We step forward and configure them. Now double-click on the Aggregate function; that will open a pop-up window as shown in the screen below:
Here we are selecting the columns for which we need a Count as shown in the screen. And after selecting the numbers of columns for getting the count now click on the OK button to get configured. Now configure the Flat File Destination as shown in the screen below.
Once everything is configured your screen will look as shown in the screen below:
Now Hit F5 tol run the application and show the output as shown in the screen below:
Here the numbers of rows are indicated at the bottom of each control as shown in the above screen. And finally the results (COUNT of rows) are loaded to the flat file destination which looks like below:
So in this article we have seen how to get a count of the number of rows using an Aggregate function transformation in the data flow tab.