SUB Queries:
1. List the employees working in research department 2. List employees who are located in New York and Chicago
3. Display the department name in which ANALYSTS are working
4. Display employees who are reporting to JONES
5. Display all the employees who are reporting to Jones Manager
6. Display all the managers in SALES and ACCOUNTING department
7. Display all the employee names in Research and Sales Department who are having at least 1 person reporting to them
8. Display all employees who do not have any reportees
9. List employees who are having at least 2 reporting
10. List the department names which are having more than 5 employees
11. List department name having at-least 3 salesman
12. List employees from research and accounting having at-least 2 reporting
13. Display second max salary
14. Display 4th max salary
15. Display 5th max salary -- Answer for nth Max Salary
Co-Related Subqueries:
16. Write a query to get 4th max salary from EMP table
17. Write a query to get 2nd…
1. List the employees working in research department 2. List employees who are located in New York and Chicago
3. Display the department name in which ANALYSTS are working
4. Display employees who are reporting to JONES
5. Display all the employees who are reporting to Jones Manager
6. Display all the managers in SALES and ACCOUNTING department
7. Display all the employee names in Research and Sales Department who are having at least 1 person reporting to them
8. Display all employees who do not have any reportees
9. List employees who are having at least 2 reporting
10. List the department names which are having more than 5 employees
11. List department name having at-least 3 salesman
12. List employees from research and accounting having at-least 2 reporting
13. Display second max salary
14. Display 4th max salary
15. Display 5th max salary -- Answer for nth Max Salary
Co-Related Subqueries:
16. Write a query to get 4th max salary from EMP table
17. Write a query to get 2nd…
Comments
In this query,
select e.empno,e.ename,d.loc from emp e join dept d ON(e.deptno=d.deptno);
Here wat is the use of 'ON' clause, sir???
Mona
Q1.List the employees whose 10% of salary is equal to year of joining.
Q2.List the Mgrs who r senior to King & who are junior to Smith.
On Caluse is used to,
1. To specify arbitrary conditions or specify columns to join.
2. The join condition is separated from other search conditions.
3. The ON clause makes code easy to understand.
Regards,
Mithun
1. select ename, sal, trunc(10*sal/100), hiredate,to_char(hiredate,'YY') from emp where trunc(10*sal/100) = to_char(hiredate,'YY');
2. select ename, hiredate from emp where hiredate > (select hiredate from emp where ename='KING')
and hiredate < (select hiredate from emp where ename='SMITH');
This will not return any rows as there are no employees in this category, if you say any employee junior to KING and senior to SMITH then you will see some rows. Query for this is as below,
select ename, hiredate from emp where hiredate < (select hiredate from emp where ename='KING')
and hiredate > (select hiredate from emp where ename='SMITH');
Regards,
Mithun
Thank u so much sir, i easily understood those queries but m stil confused wid this 'ON' clause.
So can u plz help me out sir.
Mona
Can I follow the same procedure to install 11g in Windows 7, as the video shown for 10g installation?Is there any other method to uninstall 11g?
ON in Join is ANSI syntax, using this syntax you can do both equijoin as well as non equijoin's.
Here you will join 2 tables like,
select * from emp e join dept d
on (here you will mention the condition using which the tables are joined like e.deptno = d.deptno).
Hope this helps.
Regards,
Mithun
You can follow the same process to install 11g it is similar to 10g install.
To uninstall, refer to my videos on uninstalling oracle database.
Regards,
Mithun
This is Akash Kumar(Scientist) Sir Can you send
me the Questions Generally asked in interviews (Along with Questions You
asked in the class about basic select,functions,joins,
subquery etc..)
akash22121988@gmail.com
pls
Select* from emp where rownum =10;
Its show error
But when we gve the statment like
Select * from emp where rownum <=3;
Then it gve some result... why sir
actually I got job on business intelligence. In this they are teaching like dbms, etl, datawarehouse, reporting, business intelligence and congous tool..is it good to work on this..did i have good future in this.
waiting for your reply
thank you