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NEED help in a query...

 
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arshadh
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Joined: 10 Jan 2007
Posts: 33
Topics: 12
PostPosted: Wed Jun 20, 2007 8:24 am    Post subject: NEED help in a query... Reply with quote
Consider a table having emp_id and dep_id.

Code:
EMP_ID    DEP_ID   
   100       1     
   101       1     
   102       1     
   103       2     
   104       2     
   105       3     
   106       3     
   107       3     
   108       2     
   109       2     
   110       3     
   111       4     


I want only one emp_id (any one- random) from a department.

My output shud be like
Code:

  EMP_ID    DEP_ID   
    102       1       
    105       3       
    108       2       
    111       4     
[/code].

Help me getting a rite query
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kolusu
Site Admin
Site Admin


Joined: 26 Nov 2002
Posts: 12394
Topics: 75
Location: San Jose
PostPosted: Wed Jun 20, 2007 8:52 am    Post subject: Reply with quote
arshadh,

If you don't really care as to which emp_id you get just simply use MIN/Max column functions.

ex:

Code:

SELECT MIN(EMP_ID)   
      ,DEP_ID       
  FROM T1           
 GROUP BY DEP_ID     


or

Code:

SELECT MAX(EMP_ID)   
      ,DEP_ID       
  FROM T1           
 GROUP BY DEP_ID     


Kolusu
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arshadh
Beginner


Joined: 10 Jan 2007
Posts: 33
Topics: 12
PostPosted: Wed Jul 11, 2007 11:50 pm    Post subject: Reply with quote
Thanks Kolusu, the query works fine..
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