Solved

SQL Get MIN row for each record

Posted on 2011-09-23
7
202 Views
Last Modified: 2012-06-27
Hello I have the following table data(posed in the CODE sec.  

wondering how to get the row data with the min date from each OPID.  If the 2nd Window date is less than 1st Window date then the 2nd Window should be read.    

get the min date goes something like...
Select distinct min DATE, OPID, Window
from TABLE

But the problem is if the 2nd window is the lesser date of the windows.
Accnt	OPID	DATE	Window 
34	1	9/22/11 12:32 PM	1st WINDOW
34	1	9/22/11 12:33 PM	2nd WINDOW
12	2	9/21/11 11:02 AM	1st WINDOW
12	2	9/21/11 11:01 AM	2nd Window
455	1	9/22/11 1:09pm	1st WINDOW

Open in new window

0
Comment
Question by:TechMonster
  • 4
  • 3
7 Comments
 
LVL 51

Expert Comment

by:HainKurt
ID: 36590001
try:

select * from (
select *, row_number() over (partition by opid order by window) rn
from myTable ) x
where rn=1
0
 
LVL 51

Accepted Solution

by:
HainKurt earned 500 total points
ID: 36590009
oops, we should sue [DATE]

select * from (
select *, row_number() over (partition by opid order by [DATE]) rn
from myTable ) x
where rn=1
0
 

Author Comment

by:TechMonster
ID: 36590092
i think that got it!  Have to test it out a few more times though...thanks.
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.

 

Author Comment

by:TechMonster
ID: 36590112
Well it gets the min from all DATes..but I have to get the row by min dateTime for each day.
0
 
LVL 51

Expert Comment

by:HainKurt
ID: 36590151
then you should partition by day & opid

easy way is to get date part

select floor(cast(GETDATE() as float))

select * from (
select *, row_number() over (partition by opid,  floor(cast([DATE] as float)) order by [DATE]) rn
from myTable ) x
where rn=1
0
 
LVL 51

Expert Comment

by:HainKurt
ID: 36590172
or use CONVERT(varchar, getdate(), 101) -- to get rid of time part and group by date only like : 09/23/2011

select * from (
select *, row_number() over (partition by opid, CONVERT(varchar, getdate(), 101) order by [DATE]) rn
from myTable ) x
where rn=1
0
 

Author Comment

by:TechMonster
ID: 36591917
Perfect..thanks again
0

Featured Post

VMware Disaster Recovery and Data Protection

In this expert guide, you’ll learn about the components of a Modern Data Center. You will use cases for the value-added capabilities of Veeam®, including combining backup and replication for VMware disaster recovery and using replication for data center migration.

Question has a verified solution.

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

In Part 1 (http://www.experts-exchange.com/Programming/Languages/Scripting/JavaScript/A_7849-Hex-Maze.html) we covered the hexagonal maze basics -- how the cells are represented in a JavaScript array and how the maze is displayed.  In this part, we'…
Nothing in an HTTP request can be trusted, including HTTP headers and form data.  A form token is a tool that can be used to guard against request forgeries (CSRF).  This article shows an improved approach to form tokens, making it more difficult to…
The viewer will learn the basics of jQuery, including how to invoke it on a web page. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery.: (CODE)
The viewer will learn the basics of jQuery including how to code hide show and toggles. Reference your jQuery libraries: (CODE) Include your new external js/jQuery file: (CODE) Write your first lines of code to setup your site for jQuery…

863 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

25 Experts available now in Live!

Get 1:1 Help Now