Write a query to display the name, department name and marks of the top perfomer in software engineering order by department nme

Answer 1

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Answer 2

I assume your columns names as name, dept (for department name) , marks_SE (for marks in software engineering) and your table name as student.
Now, the query is:
select name, dept, marks_SE from student where marks_SE in( select max(marks_SE) from student group by dept);
I haven't run this query to check whether it is correct or not. I am answering it on the basis of my knowledge.
This query uses the concept of nested subqueries.