Yes, it's possible but you have to do the below steps
Create date dimension table and load all the date you want in this table.
From datemension a
Left outer Join yourtable b on a.date = d.date
Now you will get all the data.
In tableau, create the calculation field for start date and you can filter the start date value as Boolean value
start date = date >= '2011-01-01'
Thank you so much Pradeep for your help. I just followed your steps to create a dimension table and did left outer join. My report looks right. But now, I have to filter year for this report. I only want to show current year 12 month date. Or I would like to show last 12 months data from the table I have the data. For example, in the table it is 2013-08. I would like to show last 12 months from 201308.