Parameter reference?

Hi All,

I have a transformation with several table inputs that I end up merging into one final fact table. Each table input has a SQL where clause for a certain date range. Right now I am going into each table input and manually changing the date range, however I want to automate this and I'm wondering is there a step that I can use that I can input the date range in one place and have the SQL reference that parameter?

Any help is appreciated.

Thanks in advance.

John Barsoum