Select Chapter ❯
Subquery is another query that is coded with in another query.You can code the subqueries in WHERE, HAVING, FROM or SELECT clause of a SELECT statements.
Example of Subquery
SELECT student_name from student_info where student_id = (SELECT id from student_marks where total_marks > 90 )
- In this example it select student_name from student_info table where the value of student_id is given by subquery