Computer Science · Database Management System
A database contains a relation Student (rollno, name, marks). Which of the following is a logically contradictory SQL query that will always return zero rows?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Select * from student where marks >= 60 and rollno <= 80;
- 2Select * from student where marks = 80;✓
- 3Select * from student where marks >= 60 and marks <= 80;
- 4Select * from student where marks between 60 and 80;
Correct answer
Select * from student where marks = 80;
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