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HOW TO MODIFIE THE LAST MODIFIED ENTRY WITH A TRIGGER ?

Posted on 2009-05-20
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Last Modified: 2012-06-21
Hi,
I need to change the value of a column of a table  when another column has been modified.
what is the good syntax ?

Thanks !
CREATE TRIGGER [MODIF_DEVIS_COMMENTAIRE_INTERNE] ON [dbo].[DEVIS] 
FOR UPDATE
AS
IF UPDATE(COMMENTAIRE_INTERNE)
BEGIN
	UPADTE DEVIS SET COMMENTAIRE_INTERNE SET DATE_MODIFICATION = GETDATE  WHERE /*  HOW CAN I RETRIEVE THE PK OF THE UPDATED ENTRY ???    */
END

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Question by:bruno_boccara
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LVL 75

Accepted Solution

by:
Anthony Perkins earned 2000 total points
ID: 24434395
CREATE TRIGGER [MODIF_DEVIS_COMMENTAIRE_INTERNE] ON [dbo].[DEVIS]

FOR UPDATE

AS

IF UPDATE(COMMENTAIRE_INTERNE)

BEGIN
    UPDATE  d
    SET          COMMENTAIRE_INTERNE = <The value you want to use goes here>,
          DATE_MODIFICATION = GETDATE()
    From    DEVIS d
          Inner Join Inserted i On d.<YourPrimaryKeyGoesHere> = i.<YourPrimaryKeyGoesHere>

END
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LVL 75

Expert Comment

by:Aneesh Retnakaran
ID: 24434400
you can find the primary key from inserted or deleted tables; to be frank, i dont really prefer TRIGGERS here, you can probably writr the code to perform the update in the same procedure where you do ur update on the other columsn
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 24434403
Let's try that again:

CREATE TRIGGER [MODIF_DEVIS_COMMENTAIRE_INTERNE] ON [dbo].[DEVIS]

FOR UPDATE

AS

IF UPDATED(COMMENTAIRE_INTERNE)

BEGIN
    UPDATE  d
    SET          COMMENTAIRE_INTERNE = <The value you want to use goes here>,
          DATE_MODIFICATION = GETDATE()
    From    DEVIS d
          Inner Join Inserted i On d.<YourPrimaryKeyGoesHere> = i.<YourPrimaryKeyGoesHere>

END
0
 
LVL 75

Expert Comment

by:Anthony Perkins
ID: 24434437
It was right the first time. :(

Sorry for the multiple posts.
0
 

Author Closing Comment

by:bruno_boccara
ID: 31583620
Perfect !!!!
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