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New Message on MumbaiUserGroup
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From: Pankil
Message 5 in Discussion
New Message on MumbaiUserGroup
SQL Audit Trigger
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Message 4 in Discussion
From:
Pankil
Hi Raj,
Thanks for quick response. I have also tried with the IF UPDATE but here also I
have to pass column name that means I have to loop through all the columns and
check for individual column updated or not. Is there a way where I can find
list of all columns being updated?
Regards,
Pankil
From: "Rajashekar M" <[EMAIL PROTECTED]>
To: [email protected]
CC: [EMAIL PROTECTED]
Subject: RE: SQL Audit Trigger
Date: Fri, 24 Feb 2006 06:31:56 +0000
Hi Pankil,
You can use the following keyword of SQL Server "IF UPDATE clause" to know
which column got updated. It returns you true then it means the column got
changed.
For detail example pls look into SQL Server Online books, you will find the
exact sysntaxt to use.
If you feel still required help, let me know
Ex: CREATE TABLE my_table*
(a int NULL, b int NULL)
GO
CREATE TRIGGER my_trig
ON my_table
FOR INSERT
AS
IF UPDATE(b)
PRINT 'Column b Modified'
GO
Regards,
Raj
From: "Pankil" <[EMAIL PROTECTED]>
Reply-To: "MumbaiUserGroup" <[email protected]>
To: "MumbaiUserGroup" <[email protected]>
Subject: SQL Audit Trigger
Date: Thu, 23 Feb 2006 21:25:49 -0800
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New Message on MumbaiUserGroup
SQL Audit Trigger
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Message 1 in Discussion
From: Pankil
Hi,
I want to log an Audit for all records being inserted, update & deleted in
another table of following format ..
Audit Table
-----------
Type Varchar(1) --- This will store 'I', 'U' or 'D'
TableName Varchar(100) --Tablename
PK Varchar(400) --Stores primarykey name & value of that table
ColumnName Varchar(100) --Field
NewValue Varchar(200) --Value being inserted
OldValue Varchar(200) --Old value in case of Update/Delete
Say for example I am creating a trigger on Table Test having follwing structure
Test
----
PKTest int --
PKTest1 int -- PKTest & PKTest1 being composite primary key
F1 Varchar(5)
F2 Varchar(10)
firing following queries in Test Table
1. insert into Test Values (1, 1, 'A', 'B')
2. insert into Test Values (1, 2, 'A1', 'B1')
3. Update Test Set F1 = 'C' Where PKTest = 1 and PKTest1 = 1
Now Requirement is following data needs to be logged in to Audit Table
Case 1.
Type = 'I'
TableName = 'Test'
PK = 'PKTest=1|PKTest1=1'
ColumnName = F1
NewValue = 'A'
OldValue = Null
Case 2.
Type = 'I'
TableName = 'Test'
PK = 'PKTest=1|PKTest1=2'
ColumnName = F1
NewValue = 'A1'
OldValue = Null
Case 3.
Type = 'I'
TableName = 'Test'
PK = 'PKTest=1|PKTest1=1'
ColumnName = F1
NewValue = 'C'
OldValue = 'A'
I am able to achive this output but the trigger I used is using a loop through
All columns and check if column is updated or not .. if yes then insert into
audit log .. For current scenario there is no issues and works fine ... but
issue arises when I want to write the trigger on a table having more than 60
columns this slow down the inserts and update.
Is there any better way to write this trigger instead of looping through the
column list and check for each column?
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