Solved

Selecting BOTTOM values

Posted on 2008-10-15
6
238 Views
Last Modified: 2012-06-27
I have the following data in a table

COL1          COL2          COL3
--------         --------        --------
1                 2000           2
1                 2001           1
1                 2002           4
1                 2003           3
2                 2000           1
2                 2001           2
2                 2002           4
2                 2003           3

I need to select the records that had the maximum values of COL3 for each COL1
In other words I need to select the records with the values 1,2002,4 AND 2,2002,4

How would I go about this?
0
Comment
Question by:acsakany
  • 2
  • 2
  • 2
6 Comments
 
LVL 13

Expert Comment

by:devsolns
ID: 22722495
select * from tbl where [COL3] = (select max([COL3]) from tbl)
0
 
LVL 39

Expert Comment

by:BrandonGalderisi
ID: 22722529
select a.* from YourTable a
join (select col1, max(col3) mcol3 from YourTable) b
on a.col1=b.col1
and a.col2=b.col2


or


select * from yourtable a
where col3 = (select max(col3) from yourtable where col1 = a.col1)
0
 

Author Comment

by:acsakany
ID: 22722651
Wouldn't both of these solutions only return one record? I need the MAX for COL3 each time COL1 changes.
0
3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

 
LVL 39

Accepted Solution

by:
BrandonGalderisi earned 50 total points
ID: 22722666
No.  Each one will return the max for each col1.

So for your example above:

COL1          COL2          COL3
--------         --------        --------
1                 2002           4
2                 2002           4

0
 
LVL 13

Expert Comment

by:devsolns
ID: 22722740
Nope each will return the max of the column
0
 

Author Closing Comment

by:acsakany
ID: 31506352
Yes you are right. Thank you very much.
0

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains how to reset the password of the sa account on a Microsoft SQL Server.  The steps in this article work in SQL 2005, 2008, 2008 R2, 2012, 2014 and 2016.
International Data Corporation (IDC) prognosticates that before the current the year gets over disbursing on IT framework products to be sent in cloud environs will be $37.1B.
Via a live example, show how to backup a database, simulate a failure backup the tail of the database transaction log and perform the restore.
Via a live example, show how to setup several different housekeeping processes for a SQL Server.

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question