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Trigger Audit Help

Posted on 2010-09-08
1
Medium Priority
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Last Modified: 2012-05-10
I have the following I have adapted from a web example, the problem I have is that I need to store both the new and old value for the updates, in additionI also want to add to the audit table, recordid, name etc from the original table. Any help would be good

USE [GeminiSQL_v8]
GO
/****** Object:  Trigger [dbo].[Audit_Trigger]    Script Date: 09/08/2010 16:11:45 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER TRIGGER [dbo].[Audit_Trigger]
ON [dbo].[Cashbook]
FOR UPDATE,DELETE
AS
Declare @OldMessage varchar(200)

IF (SELECT COUNT(*) FROM inserted) > 0
      begin
            set @OldMessage = (SELECT
            (case
            when update(Date)
            then deleted.Date
            end) as Date,
            (case when update(Credit)
            then deleted.Credit
            end) as Credit from deleted
            inner join Cashbook
            on deleted.Reference=Cashbook.Reference
            FOR XML AUTO)
      end
else
      BEGIN
            SET @OldMessage = (SELECT Date ,Credit
            from deleted
            FOR XML AUTO)
end

insert into Audit(Type, TableName, NewValue) values (1, 'Customer', @OldMessage)
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Question by:rocky050371
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1 Comment
 
LVL 35

Accepted Solution

by:
David Todd earned 2000 total points
ID: 33631698
Hi,

Triggers have two virtual tables inserted and deleted.

That is, for an update, both inserted and deleted tables exist and are populated with old (deleted) and new (inserted) values.

Regards
  David
IF (SELECT COUNT(*) FROM inserted) > 0 
      begin
            set @OldMessage = (SELECT 
            (case
            when update(Date)
            then deleted.Date
            end) as DDate,
            (case when update(Credit)
            then deleted.Credit
            end) as DCredit
		, (case
		when updated( Date )
		then inserted.Date 
		end ) as IDate 
		, (case
		when updated( Credit )
		then inserted.Credit 
		end ) as ICredit 
            from deleted 
		inner join inserted
			on inserted.Reference = deleted.Reference
            inner join Cashbook
            on deleted.Reference=Cashbook.Reference 
            FOR XML AUTO)
      end
else
      BEGIN
            SET @OldMessage = (SELECT Date ,Credit
            from deleted 
            FOR XML AUTO)
end

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