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Efficient SQL query to get the EMPID

 
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mpawankumar

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Joined: 26 Sep 2007
Posts: 7
Location: Chennai

PostPosted: Fri Jan 02, 2009 7:40 pm    Post subject: Efficient SQL query to get the EMPID
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Hi,

Can any one please help me out in writing an efficient query to get the Employes earning max. salary in their own dept. using a sub queries..

Employee table has columns as below

EmpID EmpName DeptID Salary
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Anuj Dhawan

Senior Member


Joined: 22 Apr 2006
Posts: 6258
Location: Mumbai, India

PostPosted: Sun Jan 04, 2009 11:52 am    Post subject:
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Hi,

Do you have some in-efficient solution with you, you are currently working on ?
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Prasanthhere

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Joined: 03 Aug 2005
Posts: 306

PostPosted: Mon Jan 05, 2009 11:16 am    Post subject:
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How about trying this

Select Max(Salary),DeptID from Employee
Group by DeptID;
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abhishek dadhichi

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Joined: 19 Apr 2007
Posts: 37
Location: Bangalore

PostPosted: Mon Jan 05, 2009 2:59 pm    Post subject:
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Hi Pawan,

Please try this:

sel emp_id,dept_id
from emp_table
where sal in
(sel max(sal) from emp_table);
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Arun Raj

Moderator


Joined: 17 Oct 2006
Posts: 2287
Location: @my desk

PostPosted: Mon Jan 05, 2009 3:33 pm    Post subject:
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abhishek dadhichi,

The above SQL will not give a dept level summary as asked by the TS.
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abhishek dadhichi

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Joined: 19 Apr 2007
Posts: 37
Location: Bangalore

PostPosted: Mon Jan 05, 2009 3:54 pm    Post subject:
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Hi,

Please try this one:

sel empName
from employee
where deptid in
(sel deptid,max(salary) from employee
group by 1);



Thanks,
Abhishek
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