BI Publisher/RTF conditional filter

I would want to know if it is possible and how to apply a filter to disregard some results in the bi publisher/rtf, I know it could have been filtered from the SQL custom query initially but this query is being used for another report so I don't want to modify it. In other words, one report is giving general results which is fine and we're going to leave it as is but in another report I want it to disregard certain results based on a naming convention we use, so when I republish a file from schedule process I