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
1. Two tables emp (empid, name, deptid, sal) and dept(deptid, deptname) are there. Write a query which displays empname, corresponding deptname also display those employee names who do not belong to any dept.
2. Display the employees whose salary is less than average salary.
this is my mail id please froward it sir..
sayzaheer@gmail.com
1. SELECT e.ename, e.deptno, d.dname
FROM emp e, dept d
WHERE e.deptno (+) = d.deptno;
2. select * from emp where sal < (select avg(sal) from emp);
Have also sent this to your mail id.
Regards,
Mithun
select a.sal from emp a
where 0=(select count(*) from emp b
where b.sal>a.sal)
/
This is a co-related sub query. Please go through my presentation on Subqueries below.
SUBQUERIES
Regards,
Mithun
SELECT REPLACE(TRANSLATE(LTRIM(RTRIM('!! ATHEN !!','!'), '!'), 'AN', '**'),'*','TROUBLE') FROM DUAL;
we get this answer plz tel sir
TROUBLETHETROUBLE
Always innermost function gets executed first,
check below,
SQL> select RTRIM('!! ATHEN !!','!') from dual;
RTRIM('!!
---------
!! ATHEN
You are first doing RTRIM and removing all ! from right side.
Next,
SQL> select LTRIM('!! ATHEN','!') from dual;
LTRIM(
------
ATHEN
You have used LTRIM to remove ! from left.
SQL> select TRANSLATE(' ATHEN', 'AN','**') from dual;
TRANSL
------
*THE*
Now you are using TRANSLATE function to replace A with * and N with *.
SQL> select REPLACE(' *THE*','*','TROUBLE') from dual;
REPLACE('*THE*','*
------------------
TROUBLETHETROUBLE
Finally you are replacing * with TROUBLE.
Hope this is clear.
Regards,
Mithun
this is ravi here.
Would you please explain the following questions...
1>What is the advantage of JOINS over correlations??
2>Give some specific condition
when we should use joins and
when we should use correlation??