Hi everybody.

Need your help with parameters implementation for report.
For example: i have parameter which on report is like a list of values - list of products (based on DataSet - select productID, title from tblProduct).

How can i make this parameter not required?

In general it s needed to do so:
- if product is selected from the list - use selected value as condition in WHERE statement
- if no product selected - show information about all products (without any condition in WHERE statement)

Thanks in advance, Rodion