Independent vs Correlated Subquery | Advanced SQL Tutorial For Beginners
In this video we are going to discuss the difference between independent and correlated subquery. This is a advanced SQL topic. We are going to solve a problem using both the methods. Here is the script:
create table emp(
emp_id int,
emp_name varchar(20),
department_id int,
salary int,
manager_id int,
emp_age int);
insert into emp
values
(1, 'Ankit', 100,10000, 4, 39;
insert into emp
values (2, 'Mohit', 100, 15000, 5, 48);
insert into emp
values (3, 'Vikas', 100, 10000,4,37);
insert into emp
values (4, 'Rohit', 100, 5000, 2, 16);
insert into emp
values (5, 'Mudit', 200, 12000, 6,55);
insert into emp
values (6, 'Agam', 200, 12000,2, 14);
insert into emp
values (7, 'Sanjay', 200, 9000, 2,13);
insert into emp
values (8, 'Ashish', 200,5000,2,12);
insert into emp
values (9, 'Mukesh',300,6000,6,51);
insert into emp
values (10, 'Rakesh',300,7000,6,50);
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