Solved

Conditional SQL Update from another table

Posted on 2010-09-03
3
350 Views
Last Modified: 2012-05-10
Conditional SQL Update from another table
 I need to update eStatus.NewL1 with the value of eLookup.L1
if (eStatus.Desc = eLookup.Desc) AND (eStatus.HomeLabor1 = eLookup.L1H)
ELSE (eStatus.Desc = eLookup.Desc) AND (eLookup.LHome IsNull)

Table eStatus
EmpKey Desc      HomeLabor1      NewL1
1                 T                    X
2                 T                    Y
3                 T                    Z
4                 U                    P

Table eLookup
Desc      L1H         L1
T                                V
T                A              D
T                X              E
T                Y              E
U               K
U                R            R

So the results should be:
Table eStatus

EmpKey Desc      HomeLabor1      NewL1
1                 T                    X                   E
2                 T                    Y                   E
3                 T                    Z                   V
4                 U                    P                   K


Thanks!
0
Comment
Question by:n2dweb
3 Comments
 
LVL 142

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 500 total points
ID: 33594499
this should do:
UPDATE s
   SET s.NewL1 = l.L1
  FROM eStatus s
  JOIN eLookup l
    ON l.Desc = s.Desc
   AND isnull(l.L1H, s.HomeLabor1 ) = s.HomeLabor1   

Open in new window

0
 
LVL 10

Expert Comment

by:joriszwaenepoel
ID: 33594502
Something like:

UPDATE [eStatus]
    SET [NewL1] = [L1]
    FROM eLookup                    
INNER JOIN eStatus ON eStatus.Desc = eLookup.Desc) AND ((eStatus.HomeLabor1 = eLookup.L1H)
                      OR (eLookup.LHome Is Null))
0
 
LVL 1

Author Closing Comment

by:n2dweb
ID: 33594518
Thanks!
0

Featured Post

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

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

by Mark Wills Attending one of Rob Farley's seminars the other day, I heard the phrase "The Accidental DBA" and fell in love with it. It got me thinking about the plight of the newcomer to SQL Server...  So if you are the accidental DBA, or, simp…
Introduction This article will provide a solution for an error that might occur installing a new SQL 2005 64-bit cluster. This article will assume that you are fully prepared to complete the installation and describes the error as it occurred durin…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…

770 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