Parameter values not displaying

Hi Team,

Request for help on the following:

How to display 'parameter value' on the report output.(multi value)?

I am creating a basic report with output columns as 'Product_id' and 'Brand' with the 'Product_id' as multiple value Input parameter.

If i select 'Prodcut_id' as 1,2,3 the 'Product_id' column displays only '1'.

Flow of the report:

Once the report executes asks for 'Product_id' which is a multiple value input parameter option:

User selects - 1,2,3 (check boxes selected).

But Output is like:

Product_id brand

1 A
B
C



Actual Output should come like:

Product_id brand
1 A
2 B
3 C


FYI:
Parameter query used: select distinct product_id from brands
Report Output Query:
select product_id,brand,Sales from brands where product_id in (${product_id})

Please suggest why the 'Product_id' is displaying only one row.

Thank you very much.

Naseer.