How to get one unique record from the same list of records from table? No Unique constraint in the table

Question

I have one query in SQL Server output,

Suppose i have one table (Ex.StudentMaster) having some fields-No unique constraints. For Ex. RollNumber and Name The table h

Answer 1

You can use DISTINCT which return's distinct combination's of columns.

SELECT DISTINCT RollNo, Name
FROM mytable