Hi To All I Need To Retrive Data From Two Differenet Table Like An One Table, And The Two Table Doesnot Have Any Same Columns, And The Data Must Not Allowed Duplictes I Tried But Not Getting any...

If your two tables do not have any "same columns" then there is nothing connecting the rows in the two tables - so you can't retrieve data from them both at the same time - there has to be a column which connects them. Normally, this would be an ID column which says "these rows in Table 2 are associated with this row in Table 1".
If you don't have that kind of data, then you can't do what I assume you want.

Think about it: If this is an online shop, then you probably want to prevent me accidentally ordering the same thing twice by clicking the "BUY" button twice. So you would check that my id does not contain an order for today which contains the same items to prevent duplicates. But my neighbour can place an order for the same items I did because he has a different ID, so my order items aren't associated with him.
If you don't have that kind of information, then you need to look at your database design pretty carefully.