Nth Highest Salary from EMP table , need explaination

I am new to the database world and hence learning queries at the initial stages. I want to retrieve the nth highest salary from the EMP table. I was not able to find out the answer by myself , so I searched on google. The following was the answer i got :
SELECT DISTINCT (a.sal) FROM EMP A WHERE &N = (SELECT COUNT (DISTINCT (b.sal)) FROM EMP B WHERE a.sal<=b.sal);
Enter value for n: 2
SAL
3700
Suppose the table contains salary in the following order :
SAL
2000
3000
3700
4000
3700
2000
So how come I will get the correct answer with the abov query ? I am not able to understand the part --- WHERE &N = (SELECT COUNT (DISTINCT (b.sal)) FROM EMP B WHERE a.sal<=b.sal);
Specially the condition WHERE a.sal<=b.sal is very confusing to me. Can anyone help me please to understand the same.

user12328699 wrote:
I am new to the database world and hence learning queries at the initial stages. I want to retrieve the nth highest salary from the EMP table. I was not able to find out the answer by myself , so I searched on google. The following was the answer i got :
SELECT DISTINCT (a.sal) FROM EMP A WHERE &N = (SELECT COUNT (DISTINCT (b.sal)) FROM EMP B WHERE a.sal<=b.sal);
Enter value for n: 2
SAL
3700
Suppose the table contains salary in the following order :
SAL
2000
3000
3700
4000
3700
2000
So how come I will get the correct answer with the abov query ? I am not able to understand the part --- WHERE &N = (SELECT COUNT (DISTINCT (b.sal)) FROM EMP B WHERE a.sal<=b.sal);
Specially the condition WHERE a.sal<=b.sal is very confusing to me. Can anyone help me please to understand the same.There is many better way to get the nth highest salary
But still if you want to understand the same.
Assuming the data is sorted in ascending order, then
1) a.sal=2000, so a.sal<=b.sal results in count as 3 (not equal to user input)
2) a.sal=3700, so a.sal<=b.sal results in count as 2 (equal to user input)
3) a.sal = 4000 , so a.sal<=b.sal results in count as 1 (not equal to user input)
Hence the answer is 3700
Regards
Anurag

Similar Messages

Nth highest Salary.

I need a well tuned query to find the nth highest salary from emp table.
I have one but no idea if it is tuned one.
select min(sal) from (select sal,rownum from (select sal from (select distinct sal from emp order by sal desc)) where rownum <=n) ;

You can use analytic functions.
select *
from (
select e.*, row_number() over(order by sal desc nulls last) rno
from emp e
where rno = 5 --<<-- replace 5 with N
I need a well tuned query to find the nth highest salary from emp table.This totally depends on how you have setup your database.

Retrive the second-highest value from the table using query.

Hi,
I am using Oracle 8i...
I have to retrieve the second-highest salary from the table...for this I need to write a SQL..Can anybody please help me to figure out this problem..Thanks in advance..
smitha

Using analytic functions
SELECT *
FROM (SELECT other_columns,DENSE_RANK() OVER(ORDER BY salary DESC) sal_rank
      FROM table)
WHERE sal_rank = 2
Using Order by and rownum
SELECT *
FROM (SELECT other_columns,rownum sal_rank
      FROM (SELECT other_columns,salary
            FROM table
            ORDER BY salary DESC))
WHERE sal_rank = 2TTFN
John

How to find the third highest salary from deptno20,from employee table

how to find the third highest salary from deptno20,from employee table

SELECT *
FROM emp;
EMPNO
ENAME
JOB
MGR
HIREDATE
SAL
COMM
DEPTNO
7369
SMITH
CLERK
7902
12/17/1980
1000
3
20
7499
FEDERAL
SALESMAN
7654
2/20/1981
2000
4
30
7521
WARD
SALESMAN
7698
2/22/1981
3000
4
30
7566
JONES
MANAGER
7839
4/2/1981
4000
3
20
7839
MARTIN
SALESMAN
7698
9/28/1981
5421
4
30
7698
BLAKE
MANAGER
7698
5/1/1981
6222
4
30
7782
CLARK
MANAGER
7839
6/9/1981
5222
2
10
7788
SCOTT
ANALYST
7566
12/9/1982
5463
3
20
7839
KING
PRESIDENT
7902
11/17/1981
8543
2
10
7844
TURNER
SALESMAN
7698
9/8/1981
2124
4
30
7876
ADAMS
CLERK
7788
1/12/1983
2125
3
20
7900
JAMES
CLERK
7698
12/3/1981
5462
4
30
7902
FORD
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7566
12/3/1981
2132
3
20
7934
MILLER
CLERK
7782
1/23/1982
5165
2
10
SELECT sal, deptno
FROM (SELECT   a.*,
                 DENSE_RANK () OVER (PARTITION BY deptno ORDER BY sal DESC) r
            FROM emp a
      ---- ORDER BY sal DESC
WHERE r = 3;
SAL
DEPTNO
5421
30
5165
10
2132
20
Regards ,
Friend
Message was edited by: MostWanted!!!!

Finding nth highest salary

Hi guys , I am trying to find the nth highest salary
using the below query , is there any case in which the below query can fail
select
* from (
select
distinct rownum rn,salary from emp_mgr order by rownum) t where t.rn=3

chris227 wrote:
Sory, may be i am blind, dont see it yet.
Doesnt the Nth high paid employee earns the Nth highest salary?
No. Multiple employees can earn same salary. Look at EMP table:
SQL> select ename,sal from emp order by sal desc;
ENAME             SAL
KING             5000
FORD             3000
SCOTT            3000
JONES            2975
BLAKE            2850
CLARK            2450
ALLEN            1600
TURNER           1500
MILLER           1300
WARD             1250
MARTIN           1250
ENAME             SAL
ADAMS            1100
JAMES             950
SMITH             800
Highest salary 5000. Second highest salary is 3000. Third highest salary is 2975. Now look what NTH_VALUE returns:
SQL> select distinct sal
2    from (select nth_value(sal,&n) over(order by sal desc) sal from emp)
3 /
Enter value for n: 1
old   2:   from (select nth_value(sal,&n) over(order by sal desc) sal from emp)
new   2:   from (select nth_value(sal,1) over(order by sal desc) sal from emp)
       SAL
      5000
SQL> /
Enter value for n: 2
old   2:   from (select nth_value(sal,&n) over(order by sal desc) sal from emp)
new   2:   from (select nth_value(sal,2) over(order by sal desc) sal from emp)
       SAL
      3000
SQL> /
Enter value for n: 3
old   2:   from (select nth_value(sal,&n) over(order by sal desc) sal from emp)
new   2:   from (select nth_value(sal,3) over(order by sal desc) sal from emp)
       SAL
      3000
SQL> /
Enter value for n: 4
old   2:   from (select nth_value(sal,&n) over(order by sal desc) sal from emp)
new   2:   from (select nth_value(sal,4) over(order by sal desc) sal from emp)
       SAL
      2975
SQL>
SY.

Fetching ename who are all having max(sal) in each of job from emp table

hi all,
i need a query to fetch all the ename who are all having maximum salary in each job category from emp table
thankx in advance
regrds,
punith

SQL> select ename,job,sal
2 from emp
3 order by job,sal desc;
ENAME      JOB              SAL
SCOTT      ANALYST         3000
FORD       ANALYST         3000
MILLER     CLERK           1300
ADAMS      CLERK           1100
JAMES      CLERK            950
SMITH      CLERK            800
JONES      MANAGER         2975
BLAKE      MANAGER         2850
CLARK      MANAGER         2450
KING       PRESIDENT       5000
ALLEN      SALESMAN        1600
TURNER     SALESMAN        1500
WARD       SALESMAN        1250
MARTIN     SALESMAN        1250
14 rows selected.
SQL> select ename,job,sal from emp
2 where sal in(select distinct max(sal) from emp
3* group by job)
SQL> /
ENAME      JOB              SAL
FORD       ANALYST         3000
SCOTT      ANALYST         3000
MILLER     CLERK           1300
JONES      MANAGER         2975
KING       PRESIDENT       5000
ALLEN      SALESMAN        1600
6 rows selected.
SQL>Is this what you need ?

Getting cummulative sum of salaries of employees from emp table

Hi gurus,
Can any body tell me how to get cummulative sum of salaries of employees in emp table by using analytical functions.
thanks in advance....

SeánMacGC wrote:
Hello,
Try:
SELECT empno,
SUM(SAL) OVER () cumulative_sal
FROM emp;
You need to order by to get the cumulative salary
SQL> SELECT empno,
2     SUM(SAL) OVER () cumulative_sal
3    FROM emp;
     EMPNO CUMULATIVE_SAL
      7369          29025
      7499          29025
      7521          29025
      7566          29025
      7654          29025
      7698          29025
      7782          29025
      7788          29025
      7839          29025
      7844          29025
      7876          29025
     EMPNO CUMULATIVE_SAL
      7900          29025
      7902          29025
      7934          29025
14 rows selected.
SQL> SELECT empno, sal,
2     SUM(SAL) OVER (Order by empno) cumulative_sal
3    FROM emp;
     EMPNO        SAL CUMULATIVE_SAL
      7369        800            800
      7499       1600           2400
      7521       1250           3650
      7566       2975           6625
      7654       1250           7875
      7698       2850          10725
      7782       2450          13175
      7788       3000          16175
      7839       5000          21175
      7844       1500          22675
      7876       1100          23775
     EMPNO        SAL CUMULATIVE_SAL
      7900        950          24725
      7902       3000          27725
      7934       1300          29025
14 rows selected.

How to get second maximum salary from employee table(sql query)

how to get second maximum salary from employee table(sql query)

dude there is no matter of structure .........that user already said its from employee table ...............its basic table in sql and there is no need to specify the table structure
.........i think u got my point I think you are the one who didn't understand Sarma's point.
Give a man a fish and you feed him once. Teach a man how to fish and you feed him a life long.
>
and the query is
select max(sal) from emp where sal<(select max(sal)
from emp);
this will give the 2nd max salary from the emp tableBtw: You solution is bad, because it needs to scan and sort the table emp twice. And a better solution has been given already.
Message was edited by:
Sven W. - reordered statements

I need to add a single field from with_item table . need to write select query with reference to company code , account doc no , fiscal year

I need to add a single field from with_item table . need to write select query with reference to company code , account doc no , fiscal year

Hi Arun ,
Can you explain little bit more ??
what is account doc no?
what are the transactions should be displayed in your output??
-Rajesh N

To find the lowest salary from a table

hello guys,
i need to find the lowest salary from a table. whats the easy way to do this.

How do you handle ties?
If you want multiple rows returned when there are multiple people with the same salary
SELECT *
FROM(
    SELECT a.*,
           rank() over (order by salary desc ) rnk
      FROM your_table a)
WHERE rnk = 1If you want to handle ties differently, use a different analytic function. Probably dense_rank or row_number.
Justin

How can i get first four highest values from a table

suppose we have salary table and we need first 4 highest salaries in one query or attemp

Or use an analytic:
SQL> select ename, sal from emp;
ENAME                       SAL
SMITH                       800
ALLEN                      1600
WARD                       1250
JONES                      2975
MARTIN                     1250
BLAKE                      2850
CLARK                      2450
SCOTT                      3000
KING                       5000
TURNER                     1500
ADAMS                      1100
JAMES                       950
FORD                       3000
MILLER                     1300
14 rows selected.
SQL> select ename, sal
2 from
3 (
4     select ename
5           ,sal
6           ,dense_rank() over (order by sal desc) dr
7     from   emp
8 )
9 where dr <= 4;
ENAME                       SAL
KING                       5000
SCOTT                      3000
FORD                       3000
JONES                      2975
BLAKE                      2850

To find 2nd highest salary in employee table

Hi,
I want to know how to calculate the 2nd highest salaried employee details.
rownum "=" sign cannot be used i suppose and
with and without using orderby clause.
both the methods needed.
cheers,

With order by
select * from
   ( select q.*, rownum as rn from
      ( select * from emp order by sal desc ) q
where rn=2
/With analytics:
select empno , sal
from ( select empno , sal
              , dense_rank () over (order by sal desc) as sal_rank
       from emp )
where sal_rank = 2Notice that DENSE_RANK() might give us a different result compared to RANK() and both give us a different result from the first example.
Cheers, APC

How to find top three salary of emp table?

Hi,
I am trying to get top 3 salaries using MAX() in sql but it is only showing 1 row not 3.The following qury showing only the 3rd highest.
SELECT MAX(Sal) ThirdHighest FROM emp
WHERE Sal < (SELECT MAX(Sal) FROM emp
WHERE Sal =(SELECT MAX(Sal) FROM emp
WHERE Sal <(SELECT MAX(Sal) FROM emp)))
I dont want to use the following method.
SELECT department_id dept, first_name || ' ' || last_name name, salary
FROM (
SELECT department_id, first_name, last_name,
MAX(salary) OVER (PARTITION BY department_id) dept_max_sal, salary
FROM employees e
) WHERE salary = dept_max_sal;
Kindly help to create query using only "max()" for top 3 salaries.

947459 wrote:
Hi,
I am trying to get top 3 salaries using MAX() in sql but it is only showing 1 row not 3.The following qury showing only the 3rd highest.
SELECT MAX(Sal) ThirdHighest FROM emp
WHERE Sal < (SELECT MAX(Sal) FROM emp
WHERE Sal =(SELECT MAX(Sal) FROM emp
WHERE Sal <(SELECT MAX(Sal) FROM emp)))
I dont want to use the following method.
SELECT department_id dept, first_name || ' ' || last_name name, salary
FROM (
SELECT department_id, first_name, last_name,
MAX(salary) OVER (PARTITION BY department_id) dept_max_sal, salary
FROM employees e
) WHERE salary = dept_max_sal;
Kindly help to create query using only "max()" for top 3 salaries.Why? Why not use what Oracle provides for doing top N queries?
SQL> ed
Wrote file afiedt.buf
1 select empno, ename, sal
2 from (
3        select empno, ename, sal, dense_rank() over (partition by 1 order by sal desc) as r from emp
4       )
5* where r <= 3
SQL> /
     EMPNO ENAME             SAL
      7839 KING             5000
      7788 SCOTT            3000
      7902 FORD             3000
      7566 JONES            2975Using just the MAX function alone will make it harder for you and is completely unnecessary.

How to get the select * from emp table output on the console using java

public class software {
      * @param args
     static final String JDBC_DRIVER = "oracle.jdbc.driver.OracleDriver";
     static final String DATABASE_URL = "jdbc:oracle:abc";
     private static Connection connection;
     private static Statement statement;
     public static void main(String[] args) {
          // TODO Auto-generated method stub
     try {
          System.out.println("-------THIS IS THE Class.forNameJDBC_DRIVER");
               Class.forName(JDBC_DRIVER);
               System.out.println("THIS IS THE Class.forNameJDBC_DRIVER");
               connection = DriverManager.getConnection(DATABASE_URL, "abc",
               "abc");
               System.out.println("THIS IS THE connection abc ,abc");
               statement = connection.createStatement();
               //Query to find the values in the EMP table.
               ResultSet resultSet = statement.executeQuery("SELECT * from EMP");
               if(resultSet.next()){
               System.out.println("THESE ARE THE VALUES IN EMP TABLE:"+resultSet); /// How can i get all the values record wise on the console ??????
               resultSet.close();
     catch (ClassNotFoundException classNotFound) {
               System.out.println("Driver not Found"+classNotFound.getMessage());
          } catch (SQLException sqlException) {
               System.out.println("SQL Exception - bad sql");
               System.out.println(sqlException.getMessage());
}

1sai
Please assign the dukes here and in your previous threads.
See [http://wikis.sun.com/display/SunForums/Duke+Stars+Program+-+How+it+Works]
You are currently the all time career leader in un-awarded dukes, with including this thread 75 unawarded dukes for questions you marked as answered.
It's even worse when you look and see that you have awarded many dukes as well. So you do know how to do it. You're just too lazy and rude to be bothered.
Don't be a lazy wank.

How to display required data from emp table?

Hi every one, this is my first post in this portal. I want display the details of emp table.. for that I am using this SQL statement.
select * from emp where mgr=nvl(:mgr,mgr);
when I give the input as 7698 it is displaying the corresponding records... and also when I won't give any input then it is displaying all the records except the mgr with null values.
1)I want to display all the records when I won't give any input including nulls
2)I want to display all the records who's mgr is null
Is there any way to incorporate to include all these in a single query..

Hi,
937440 wrote:
Hi every one, this is my first post in this portal. Welcome to the forum!
Be sure to read the forum FAQ {message:id=9360002}
I want display the details of emp table.. for that I am using this SQL statement.
select * from emp where mgr=nvl(:mgr,mgr);
when I give the input as 7698 it is displaying the corresponding records... and also when I won't give any input then it is displaying all the records except the mgr with null values.
1)I want to display all the records when I won't give any input including nulls
2)I want to display all the records who's mgr is null
Is there any way to incorporate to include all these in a single query..It's a little unclear what you're asking.
The following query always includes rows where mgr is NULL, and when the bind variable :mgr is NULL, it displays all rows:
SELECT *
FROM     emp
WHERE     LNNVL (mgr != :mgr)
;That is, when :mgr = 7698, it displays 6 rows, and when :mgr is NULL it displays 14 rows (assuming you're using the Oracle-supplied scott.emp table).
The following query includes rows where mgr is NULL only when the bind variable :mgr is NULL, in which case it displays all rows:
SELECT     *
FROM     emp
WHERE     :mgr     = mgr
OR      :mgr      IS NULL
;When :mgr = 7698, this displays 5 rows, and when :mgr is NULL it displays 14 rows.
The following query includes rows where mgr is NULL only when the bind variab;e :mgr is NULL, in which case it displays only the rows where mgr is NULL. That is, it treats NULL as a value:
SELECT     *
FROM     emp
WHERE     DECODE ( mgr
            , :mgr, 'OK'
            )     = 'OK'
;When :mgr = 7698, this displays 5 rows, and when :mgr is NULL, it displays 1 row.

Nth Highest Salary from EMP table , need explaination

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