Hi Bikash,
It depends on the requirement.
If you just want to display the unique records, then what you can do is use 'delete adjacent duplicate'. This can help in eliminating the duplicate records from the table.
Else, if you just want to display the first record, the go for a read statement on the internal table and display the same.
If you still have doubts, please let me know.
Regards,
Vineet