Solved

Selecting BOTTOM values

Posted on 2008-10-15
6
237 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
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.

 
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

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

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

If you have heard of RFC822 date formats, they can be quite a challenge in SQL Server. RFC822 is an Internet standard format for email message headers, including all dates within those headers. The RFC822 protocols are available in detail at:   ht…
Composite queries are used to retrieve the results from joining multiple queries after applying any filters. UNION, INTERSECT, MINUS, and UNION ALL are some of the operators used to get certain desired results.​
Via a live example, show how to set up a backup for SQL Server using a Maintenance Plan and how to schedule the job into SQL Server Agent.
Viewers will learn how to use the INSERT statement to insert data into their tables. It will also introduce the NULL statement, to show them what happens when no value is giving for any given column.

867 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

Need Help in Real-Time?

Connect with top rated Experts

23 Experts available now in Live!

Get 1:1 Help Now