How do I create a “two pass” package in SSIS to get extra details?

Question

I need to create an SSIS package that will do the following:

1. Connect to Service A and download recent activity records. These records contain an User Id and an activity code.

2. Iterate through the results of the result set from Service A and connect to Service B retrieve additional details for each User Id (name, department, etc.).

3. Put all of the results from this "two pass" scenario into a DataTable on our SQL Server.

I'm able to do parts 1 and 3 without issue, but I'm having difficulties in how to implement part 2.

Do I put the results from part 1 into the destination table and then iterate through the results in a second Data Flow Task? Or is there a way to "append" the results from steps 1 and 2 into a single table/file/etc. and push the results into the destination table all at once?

I'm seeing all the controls available in BIDS, but can't seem to make them fit.

Answer 1

In the dataflow tab:

1. Use 1 of the dataflow sources (XML source)
2. Use the Lookup Transformation
3. SQL Destination