Solved

Help Needed With Query

Posted on 2015-01-17
5
49 Views
Last Modified: 2015-01-20
I need help with one more Query and then I'm done.  For this one, I need to update the SinceLastAssigned value for every participant who has a value of zero to the MAX value in that column, plus one (in the case of the data presented, that would be 176).  Please let me know if you have any questions.  Appreciate the help!

Sample Data
0
Comment
Question by:penlandt
  • 2
  • 2
5 Comments
 
LVL 68

Expert Comment

by:Qlemo
ID: 40556036
Is 176 the value for all rows having a zero?
0
 
LVL 1

Author Comment

by:penlandt
ID: 40556248
Yes, that's correct.   I'm assuming that this can be done in one query but the first part (of course) has to be identifying the maximum value in the since last assigned column, then updating all the rows where the value is 0 to that maximum value plus one.  Hope that helps.
0
 
LVL 68

Accepted Solution

by:
Qlemo earned 500 total points
ID: 40556285
That's easy. If you would need unique values, that's getting difficult ;-).
update  tbl set sinceLastAssigned = nextMaxAssigned
from (select max(sinceLastAssigned)+1 as nextMaxAssigned from tbl) m
where sinceLastAssigned = 0

Open in new window

0
 
LVL 14

Expert Comment

by:Vikas Garg
ID: 40557191
Hi,

I agree with Qlemo,

You can Update
Update Tbl set sinceLastAssigned = (SELECT max(sinceLastAssigned) from Tbl)  +1
WHERE sinceLastAssigned = 0

Open in new window

0
 
LVL 1

Author Closing Comment

by:penlandt
ID: 40561404
Thank you very much, this was exactly what I needed!
0

Featured Post

Control application downtime with dependency maps

Visualize the interdependencies between application components better with Applications Manager's automated application discovery and dependency mapping feature. Resolve performance issues faster by quickly isolating problematic components.

Question has a verified solution.

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

Suggested Solutions

PL/SQL can be a very powerful tool for working directly with database tables. Being able to loop will allow you to perform more complex operations, but can be a little tricky to write correctly. This article will provide examples of basic loops alon…
In this article I will describe the Backup & Restore method as one possible migration process and I will add the extra tasks needed for an upgrade when and where is applied so it will cover all.
Internet Business Fax to Email Made Easy - With  eFax Corporate (http://www.enterprise.efax.com), you'll receive a dedicated online fax number, which is used the same way as a typical analog fax number. You'll receive secure faxes in your email, f…
Learn how to create flexible layouts using relative units in CSS.  New relative units added in CSS3 include vw(viewports width), vh(viewports height), vmin(minimum of viewports height and width), and vmax (maximum of viewports height and width).

920 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

14 Experts available now in Live!

Get 1:1 Help Now