By default want to display all rows on Report when parameter available in dataset

Hi,

- Created a dataset and displaying the records on tablix based on parameter.
select * from sales where salesID=@sales

- I do not have any problem when gives parameter values('@sales'), the data is diplaying on Report.

- By default when report loads i want to display all the rows on tablix. My dataset has parameter(@sales) so i cannot display all rows when reports. Please give me an idea for this.

Thanks.

Regards

Kashif