Interested to Buy Any Domain ? << Click Here >> for more details...
how to check the 3rd max salary from an employee table? One
of the queries used is as follows:
select sal from emp a where 3=(select
count(distinct(sal)) from emp b
where a.sal<=b.sal).
Here in the sub query "select
count(distinct(sal)) from emp b
where a.sal<=b.sal" or
"select count(distinct(sal)) from emp b
where a.sal=b.sal" should reveal the same number of rows is
in't it? Can any one here please explain me how is this
query working perfectly.
However, there is another query to get the 3rd highest of
salaries of employees that logic I can understand. Pls find
the query below.
"select min(salary) from emp where salary in(select
distinct
top 3 salary from
emp order by salary desc)"
Please explain me how
"select sal from emp a where 3=(select
count(distinct(sal)) from emp b
where a.sal<=b.sal)" works
source:http://www.allinterview.com/showanswers/33264.html.
Thanks in advance
Regards,
Karthik.
- 4 Answers
- 8492 Views
- I also Faced
- E-Mail Answers
Answer Posted / s.panda
select level,max(sal) from emp where level=&levelno
connect by prior sal>sal group by level
By entering the level no,Accordingly we can get the nth highest salay of a table.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is the difference between having and a where in sql?
what is top in tsql? : Transact sql
What is pl sql variable?
Can I learn sql in a week?
How to use boolean type in select statement?
Is join and inner join the same?
What is execute immediate?
Is hadoop a nosql?
What is right join sql?
How to use distinct and count in sql query? Explain
tell us something about heap tables. : Sql dba
column A column b | output 10 7 | 10 5 8 | 8 7 -9 | 7 3 5 | 5 0 6 | 6 Write a sql query to print such output.
What is the difference between syntax error and runtime error?
i have 2 table table one 4 columns respective values a1 7,a2 6,a3 8 ,a4 12 & table two 4 colums respective values a1 7,a2 6,a3 8,a4 15.if table one & table two 3 colums same then 4th column values 1)Qes diff >5 then print 5 * diff value 2)Que diff <5 print 5
Mention what is the use of function "module procedure" in pl/sql?
