Solved

How do I access values from the inserted and deleted tables ,when wrting a trigger

Posted on 2009-05-18
4
155 Views
Last Modified: 2012-05-07
How do I access values from the inserted and deleted tables ,when wrting a trigger?
Consider the following trigger written on table CONFIG_PROJECTS.The trigger is created successfully but doesnt fire.


ALTER TRIGGER [dbo].[UTRG_InitializeResources] 
   ON   [dbo].[CONFIG_PROJECTS] 
   FOR INSERT,UPDATE 
AS 
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;
 
    -- Insert statements for trigger here
 
declare @pmcode varchar(10)
select @pmcode =(select str_empcode_PM  from inserted)
if (@pmcode  != null)
insert into TRANS_RESOURCES values(4,@pmcode,null,'WSZ001',40.3,1)
 
END

Open in new window

0
Comment
Question by:MaithreeD
  • 2
4 Comments
 
LVL 1

Assisted Solution

by:venkatca
venkatca earned 150 total points
ID: 24419217
remove this line and it should work

if (@pmcode  != null)
0
 
LVL 1

Assisted Solution

by:venkatca
venkatca earned 150 total points
ID: 24419230
if you still need to check null values try this instead

if isnull(@pmcode,'')<>''
0
 
LVL 22

Assisted Solution

by:pivar
pivar earned 150 total points
ID: 24419235
Hi,

Since an insert/update can affect multiple rows change your trigger like this. Otherwise this should run fine on inserts and update to the table CONFIG_PROJECTS where str_empcode_PM
is not null.

/peter


ALTER TRIGGER [dbo].[UTRG_InitializeResources] 
   ON   [dbo].[CONFIG_PROJECTS] 
   FOR INSERT,UPDATE 
AS 
BEGIN
        -- SET NOCOUNT ON added to prevent extra result sets from
        -- interfering with SELECT statements.
        SET NOCOUNT ON;
 
    -- Insert statements for trigger here
 
insert into TRANS_RESOURCES 
select 4,str_empcode_PM,null,'WSZ001',40.3,1  
from inserted
where str_empcode_PM!= null
 
END

Open in new window

0
 
LVL 143

Accepted Solution

by:
Guy Hengel [angelIII / a3] earned 200 total points
ID: 24419267
where str_empcode_PM!= null
will not work, unless you had ANSI_NULLS set to OFF.

instead:
where str_empcode_PM IS NOT null
0

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

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

Suggested Solutions

Data architecture is an important aspect in Software as a Service (SaaS) delivery model. This article is a study on the database of a single-tenant application that could be extended to support multiple tenants. The application is web-based develope…
Confronted with some SQL you don't know can be a daunting task. It can be even more daunting if that SQL carries some of the old secret codes used in the Ye Olde query syntax, such as: (+)     as used in Oracle;     *=     =*    as used in Sybase …
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

828 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