DELETE Audit Trigger With BLOBs

Oct 14, 1999

Greetings

I'm clear about the use of a DELETE trigger to "move" your deleted record to a second database as a sort of recycle bin.

But SS7 has the limitation, and it's mentioned in BOL, that it cannot reference your TEXT, NTEXT or IMAGE fields in the DELETED table. It says to join the original table with DELETED to get at those fields.

The only problem is the original table's record has been deleted! Even though the transaction has not yet been COMMITTED.

Here's my Trigger:

CREATE TRIGGER AuditTest ON Activity FOR DELETE AS

INSERT AuditDB.dbo.Activity
SELECT Activity.* FROM Activity INNER JOIN Deleted
ON Activity.ActivityID = Deleted.ActivityID

And for discussion, here's my Table:

ActivityID uniqueidentifier
OrgId uniqueidentifier
Title varchar(600
Active bit
Comments text
LastUpdate datetime

Any suggestions? Has anyone been able to implement a DELETE Audit
Trigger on a table with BLOBs?

Thanks,

-Rich

Richard Hundhausen
Stuttgart, Germany

View 3 Replies


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Generic Audit Trigger CLR C#(Works When The Trigger Is Attached To Any Table)

Dec 5, 2006

This Audit Trigger is Generic (i.e. non-"Table Specific") attach it to any tabel and it should work. Be sure and create the 'Audit' table first though.

The following code write audit entries to a Table called
'Audit'
with columns
'ActionType' //varchar
'TableName' //varchar
'PK' //varchar
'FieldName' //varchar
'OldValue' //varchar
'NewValue' //varchar
'ChangeDateTime' //datetime
'ChangeBy' //varchar

using System;
using System.Data;
using System.Data.SqlClient;
using Microsoft.SqlServer.Server;

public partial class Triggers
{
//A Generic Trigger for Insert, Update and Delete Actions on any Table
[Microsoft.SqlServer.Server.SqlTrigger(Name = "AuditTrigger", Event = "FOR INSERT, UPDATE, DELETE")]

public static void AuditTrigger()
{
SqlTriggerContext tcontext = SqlContext.TriggerContext; //Trigger Context
string TName; //Where we store the Altered Table's Name
string User; //Where we will store the Database Username
DataRow iRow; //DataRow to hold the inserted values
DataRow dRow; //DataRow to how the deleted/overwritten values
DataRow aRow; //Audit DataRow to build our Audit entry with
string PKString; //Will temporarily store the Primary Key Column Names and Values here
using (SqlConnection conn = new SqlConnection("context connection=true"))//Our Connection
{
conn.Open();//Open the Connection
//Build the AuditAdapter and Mathcing Table
SqlDataAdapter AuditAdapter = new SqlDataAdapter("SELECT * FROM Audit WHERE 1=0", conn);
DataTable AuditTable = new DataTable();
AuditAdapter.FillSchema(AuditTable, SchemaType.Source);
SqlCommandBuilder AuditCommandBuilder = new SqlCommandBuilder(AuditAdapter);//Populates the Insert command for us
//Get the inserted values
SqlDataAdapter Loader = new SqlDataAdapter("SELECT * from INSERTED", conn);
DataTable inserted = new DataTable();
Loader.Fill(inserted);
//Get the deleted and/or overwritten values
Loader.SelectCommand.CommandText = "SELECT * from DELETED";
DataTable deleted = new DataTable();
Loader.Fill(deleted);
//Retrieve the Name of the Table that currently has a lock from the executing command(i.e. the one that caused this trigger to fire)
SqlCommand cmd = new SqlCommand("SELECT object_name(resource_associated_entity_id) FROM
ys.dm_tran_locks WHERE request_session_id = @@spid and resource_type = 'OBJECT'", conn);
TName = cmd.ExecuteScalar().ToString();
//Retrieve the UserName of the current Database User
SqlCommand curUserCommand = new SqlCommand("SELECT system_user", conn);
User = curUserCommand.ExecuteScalar().ToString();
//Adapted the following command from a T-SQL audit trigger by Nigel Rivett
//http://www.nigelrivett.net/AuditTrailTrigger.html
SqlDataAdapter PKTableAdapter = new SqlDataAdapter(@"SELECT c.COLUMN_NAME
from INFORMATION_SCHEMA.TABLE_CONSTRAINTS pk ,
INFORMATION_SCHEMA.KEY_COLUMN_USAGE c
where pk.TABLE_NAME = '" + TName + @"'
and CONSTRAINT_TYPE = 'PRIMARY KEY'
and c.TABLE_NAME = pk.TABLE_NAME
and c.CONSTRAINT_NAME = pk.CONSTRAINT_NAME", conn);
DataTable PKTable = new DataTable();
PKTableAdapter.Fill(PKTable);

switch (tcontext.TriggerAction)//Switch on the Action occuring on the Table
{
case TriggerAction.Update:
iRow = inserted.Rows[0];//Get the inserted values in row form
dRow = deleted.Rows[0];//Get the overwritten values in row form
PKString = PKStringBuilder(PKTable, iRow);//the the Primary Keys and There values as a string
foreach (DataColumn column in inserted.Columns)//Walk through all possible Table Columns
{
if (!iRow[column.Ordinal].Equals(dRow[column.Ordinal]))//If value changed
{
//Build an Audit Entry
aRow = AuditTable.NewRow();
aRow["ActionType"] = "U";//U for Update
aRow["TableName"] = TName;
aRow["PK"] = PKString;
aRow["FieldName"] = column.ColumnName;
aRow["OldValue"] = dRow[column.Ordinal].ToString();
aRow["NewValue"] = iRow[column.Ordinal].ToString();
aRow["ChangeDateTime"] = DateTime.Now.ToString();
aRow["ChangedBy"] = User;
AuditTable.Rows.InsertAt(aRow, 0);//Insert the entry
}
}
break;
case TriggerAction.Insert:
iRow = inserted.Rows[0];
PKString = PKStringBuilder(PKTable, iRow);
foreach (DataColumn column in inserted.Columns)
{
//Build an Audit Entry
aRow = AuditTable.NewRow();
aRow["ActionType"] = "I";//I for Insert
aRow["TableName"] = TName;
aRow["PK"] = PKString;
aRow["FieldName"] = column.ColumnName;
aRow["OldValue"] = null;
aRow["NewValue"] = iRow[column.Ordinal].ToString();
aRow["ChangeDateTime"] = DateTime.Now.ToString();
aRow["ChangedBy"] = User;
AuditTable.Rows.InsertAt(aRow, 0);//Insert the Entry
}
break;
case TriggerAction.Delete:
dRow = deleted.Rows[0];
PKString = PKStringBuilder(PKTable, dRow);
foreach (DataColumn column in inserted.Columns)
{
//Build and Audit Entry
aRow = AuditTable.NewRow();
aRow["ActionType"] = "D";//D for Delete
aRow["TableName"] = TName;
aRow["PK"] = PKString;
aRow["FieldName"] = column.ColumnName;
aRow["OldValue"] = dRow[column.Ordinal].ToString();
aRow["NewValue"] = null;
aRow["ChangeDateTime"] = DateTime.Now.ToString();
aRow["ChangedBy"] = User;
AuditTable.Rows.InsertAt(aRow, 0);//Insert the Entry
}
break;
default:
//Do Nothing
break;
}
AuditAdapter.Update(AuditTable);//Write all Audit Entries back to AuditTable
conn.Close(); //Close the Connection
}
}


//Helper function that takes a Table of the Primary Key Column Names and the modified rows Values
//and builds a string of the form "<PKColumn1Name=Value1>,PKColumn2Name=Value2>,......"
public static string PKStringBuilder(DataTable primaryKeysTable, DataRow valuesDataRow)
{
string temp = String.Empty;
foreach (DataRow kColumn in primaryKeysTable.Rows)//for all Primary Keys of the Table that is being changed
{
temp = String.Concat(temp, String.Concat("<", kColumn[0].ToString(), "=", valuesDataRow[kColumn[0].ToString)].ToString(), ">,"));
}
return temp;
}
}

The trick was getting the Table Name and the Primary Key Columns.
I hope this code is found useful.

Comments and Suggestion will be much appreciated.

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Sep 21, 2007

Hi

I was curious whether it's possible to audit DELETE statements in the MS SQL database. I created a procedure (below), but I didn't find any event associated with DELETE statements.

Any help will be greatly appreciated!

Thanks,
Alla

CREATE proc sp_Turn_Audit_On
as
/************************************************** **/
/* Created by: SQL Profiler */
/* Date: 11/15/2006 05:16:40 PM */
/************************************************** **/


-- Create a Queue
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declare @TraceID int
declare @maxfilesize bigint
declare @StatusMsg varchar
declare @ServerTraceFile varchar
set @ServerTraceFile = 'E:Program FilesMicrosoft SQL ServerMSSQLTraceAudit_Info'
set @maxfilesize = 1024

-- Client side File and Table cannot be scripted

-- Set the events
declare @on bit
set @on = 1

exec @rc = sp_trace_create @TraceID OUTPUT, 0, N'\hostnamedbauditlogmy_dir', @maxfilesize, NULL
print @TraceID

if (@rc != 0) goto error
exec sp_trace_setevent @TraceID, 14, 1, @on
exec sp_trace_setevent @TraceID, 14, 6, @on
exec sp_trace_setevent @TraceID, 14, 9, @on
exec sp_trace_setevent @TraceID, 14, 10, @on
exec sp_trace_setevent @TraceID, 14, 11, @on
exec sp_trace_setevent @TraceID, 14, 12, @on
exec sp_trace_setevent @TraceID, 14, 13, @on
exec sp_trace_setevent @TraceID, 14, 14, @on
exec sp_trace_setevent @TraceID, 14, 16, @on
exec sp_trace_setevent @TraceID, 14, 17, @on
exec sp_trace_setevent @TraceID, 14, 18, @on
-- Set the Filters
declare @intfilter int
declare @bigintfilter bigint

exec sp_trace_setfilter @TraceID, 10, 0, 7, N'SQL Profiler'


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exec sp_trace_setstatus @TraceID, 1
--SELECT @StatusMsg = 'sp_trace_setstatus' + ' Error - ' + @TraceID
-- display trace id for future references
select TraceID=@TraceID

goto noCursor

error:
select ErrorCode=@rc

noCursor:
return


GO
exec sp_procoption N'sp_Turn_Audit_On', N'startup', N'true'
GO

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Jun 5, 2007

hi, im kinda new to sql and was just wondering if someone could help.

i need to create a trigger that saves all changes from a table(table1) to an audit table.

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item_price
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Oct 26, 2007



I wont to get text of statement which chaged actual table.

with this script :




Code Block
if object_id('dbo.mytable') is not null drop table dbo.mytable
go
create table dbo.mytable (f1 varchar(100))
go
alter trigger dbo.ti_mytable on dbo.mytable for insert
as
set nocount on
print 'in trigger'
DECLARE @sql_handle binary(20)
select @sql_handle = sql_handle FROM master.dbo.sysprocesses p (nolock) where spid = @@spid
select @sql_handle, @@spid, [text] FROM ::fn_get_sql(@sql_handle) as statement_text
GO




if I execute



Code Block
insert into mytable values ('test')



I getting text of the trigger. How I can get @sql_handle of original statement ?

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Nov 17, 2006

Hi,

I've created a few audit trace sessions and each of them is producing files.
The procedure I used is listed below:

IF EXISTS (SELECT 1 FROM sysobjects WHERE [name] = 'sp_Turn_Audit_On' AND type = 'P')
DROP PROC sp_Turn_Audit_On
GO

CREATE proc sp_Turn_Audit_On
as
/************************************************** **/
/* Created by: SQL Profiler */
/* Date: 11/15/2006 05:16:40 PM */
/************************************************** **/


-- Create a Queue
declare @rc int
declare @TraceID int
declare @maxfilesize bigint
set @maxfilesize = 1024
exec @rc = sp_trace_create @TraceID output, 2, N'E:Program FilesMicrosoft SQL ServerMSSQLTraceAudit_Info.trc', @maxfilesize, NULL
if (@rc != 0) goto error

-- Client side File and Table cannot be scripted

-- Set the events
declare @on bit
set @on = 1

begin
exec sp_trace_setevent @TraceID, 14, 1, @on
exec sp_trace_setevent @TraceID, 14, 6, @on
exec sp_trace_setevent @TraceID, 14, 9, @on
exec sp_trace_setevent @TraceID, 14, 10, @on
exec sp_trace_setevent @TraceID, 14, 11, @on
exec sp_trace_setevent @TraceID, 14, 12, @on
exec sp_trace_setevent @TraceID, 14, 13, @on
exec sp_trace_setevent @TraceID, 14, 14, @on
exec sp_trace_setevent @TraceID, 14, 16, @on
exec sp_trace_setevent @TraceID, 14, 17, @on
exec sp_trace_setevent @TraceID, 14, 18, @on
exec sp_trace_setevent @TraceID, 15, 1, @on
exec sp_trace_setevent @TraceID, 15, 6, @on
exec sp_trace_setevent @TraceID, 15, 9, @on
exec sp_trace_setevent @TraceID, 15, 10, @on
exec sp_trace_setevent @TraceID, 15, 11, @on
exec sp_trace_setevent @TraceID, 15, 12, @on
exec sp_trace_setevent @TraceID, 15, 13, @on
exec sp_trace_setevent @TraceID, 15, 14, @on
exec sp_trace_setevent @TraceID, 15, 16, @on
exec sp_trace_setevent @TraceID, 15, 17, @on
exec sp_trace_setevent @TraceID, 15, 18, @on
exec sp_trace_setevent @TraceID, 20, 1, @on
exec sp_trace_setevent @TraceID, 20, 6, @on
exec sp_trace_setevent @TraceID, 20, 9, @on
exec sp_trace_setevent @TraceID, 20, 10, @on
exec sp_trace_setevent @TraceID, 20, 11, @on
exec sp_trace_setevent @TraceID, 20, 12, @on
exec sp_trace_setevent @TraceID, 20, 13, @on
exec sp_trace_setevent @TraceID, 20, 14, @on
exec sp_trace_setevent @TraceID, 20, 16, @on
exec sp_trace_setevent @TraceID, 20, 17, @on
exec sp_trace_setevent @TraceID, 20, 18, @on
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exec sp_trace_setevent @TraceID, 37, 6, @on
exec sp_trace_setevent @TraceID, 37, 9, @on
exec sp_trace_setevent @TraceID, 37, 10, @on
exec sp_trace_setevent @TraceID, 37, 11, @on
exec sp_trace_setevent @TraceID, 37, 12, @on
exec sp_trace_setevent @TraceID, 37, 13, @on
exec sp_trace_setevent @TraceID, 37, 14, @on
exec sp_trace_setevent @TraceID, 37, 16, @on
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exec sp_trace_setevent @TraceID, 37, 18, @on
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exec sp_trace_setevent @TraceID, 46, 6, @on
exec sp_trace_setevent @TraceID, 46, 9, @on
exec sp_trace_setevent @TraceID, 46, 10, @on
exec sp_trace_setevent @TraceID, 46, 11, @on
exec sp_trace_setevent @TraceID, 46, 12, @on
exec sp_trace_setevent @TraceID, 46, 13, @on
exec sp_trace_setevent @TraceID, 46, 14, @on
exec sp_trace_setevent @TraceID, 46, 16, @on
exec sp_trace_setevent @TraceID, 46, 17, @on
exec sp_trace_setevent @TraceID, 46, 18, @on
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exec sp_trace_setevent @TraceID, 47, 6, @on
exec sp_trace_setevent @TraceID, 47, 9, @on
exec sp_trace_setevent @TraceID, 47, 10, @on
exec sp_trace_setevent @TraceID, 47, 11, @on
exec sp_trace_setevent @TraceID, 47, 12, @on
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exec sp_trace_setevent @TraceID, 47, 16, @on
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exec sp_trace_setevent @TraceID, 47, 18, @on
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exec sp_trace_setevent @TraceID, 107, 14, @on
exec sp_trace_setevent @TraceID, 107, 16, @on
exec sp_trace_setevent @TraceID, 107, 17, @on
exec sp_trace_setevent @TraceID, 107, 18, @on
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exec sp_trace_setevent @TraceID, 109, 9, @on
exec sp_trace_setevent @TraceID, 109, 10, @on
exec sp_trace_setevent @TraceID, 109, 11, @on
exec sp_trace_setevent @TraceID, 109, 12, @on
exec sp_trace_setevent @TraceID, 109, 13, @on
exec sp_trace_setevent @TraceID, 109, 14, @on
exec sp_trace_setevent @TraceID, 109, 16, @on
exec sp_trace_setevent @TraceID, 109, 17, @on
exec sp_trace_setevent @TraceID, 109, 18, @on
exec sp_trace_setevent @TraceID, 110, 1, @on
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exec sp_trace_setevent @TraceID, 110, 10, @on
exec sp_trace_setevent @TraceID, 110, 11, @on
exec sp_trace_setevent @TraceID, 110, 12, @on
exec sp_trace_setevent @TraceID, 110, 13, @on
exec sp_trace_setevent @TraceID, 110, 14, @on
exec sp_trace_setevent @TraceID, 110, 16, @on
exec sp_trace_setevent @TraceID, 110, 17, @on
exec sp_trace_setevent @TraceID, 110, 18, @on
exec sp_trace_setevent @TraceID, 115, 1, @on
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exec sp_trace_setevent @TraceID, 115, 9, @on
exec sp_trace_setevent @TraceID, 115, 10, @on
exec sp_trace_setevent @TraceID, 115, 11, @on
exec sp_trace_setevent @TraceID, 115, 12, @on
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exec sp_trace_setevent @TraceID, 115, 14, @on
exec sp_trace_setevent @TraceID, 115, 16, @on
exec sp_trace_setevent @TraceID, 115, 17, @on
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-- Set the Filters
declare @intfilter int
declare @bigintfilter bigint

exec sp_trace_setfilter @TraceID, 10, 0, 7, N'SQL Profiler'


-- Set the trace status to start
exec sp_trace_setstatus @TraceID, 1

-- display trace id for future references
select TraceID=@TraceID
goto noCursor

error:
select ErrorCode=@rc

noCursor:
return

end

Unfortunately, I didn't mention the @stoptime for each of the trace sessions and now I'm unable to delete the trace files. Is there any select statement that will be useful in finding the @traceid for these auditting sessions? Also, how am I able to stop the sessions without stopping the related services?

Thank you in advance.

Best regards,
Alla

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Hi,

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and i.req_fname <> d.req_fname from the where clause then it works fine the first time too. Seems like null value of the column is messing things up

Any thoughts?


Here is my t-sql


Insert into dbo.AUDIT (audit_req, audit_new_value, audit_field, audit_user)

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SET ANSI_NULLS ON
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Auditors want us to track when Insert, Update and Delete failures occur. Is this possible in SQL 2000?

They also want us to track schema changes. Is this possible?

Thanks, Dave

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Incorrect Use Of Update Trigger For Audit Purpose

Jan 24, 2001

I have a update trigger on a table which fires trapping the userid and time in the same record. The code is below. The tirgger only works if I have the recursive triggers option unchecked on databae properties. Is the way I am trying the only way to accomplish this in the update trigger or is there an more efficient way. Thanks

CREATE trigger tr_cmsUpdt_MARS on dbo.PATIENT_MEDICATION_DISPERSAL_ for UPDATE as
-- updates record with sql user and timestamp
--created 11-28-00 tim cronin
DECLARE @muser varchar(35),
@rec_lock_status int,
@ptacpt_status int
set @muser = current_user
begin
UPDATE PATIENT_MEDICATION_DISPERSAL_
set MODIFIED_BY = @muser,
MODIFIED_TS = getdate()
from deleted dt
WHERE PATIENT_MEDICATION_DISPERSAL_.RECORD_ID = dt.RECORD_ID
end
GO
SET QUOTED_IDENTIFIER OFF SET ANSI_NULLS ON
GO

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Trigger Is Deleting Entries In Audit Table?

Aug 30, 2013

The following is the trigger which create a row in the audit table when a single deletion is occurred.

ALTER TRIGGER [dbo].[TRG_Delete_tbl_attendance]
ON [dbo].[tbl_attendance]
AFTER DELETE
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.

[code]....

I am trying to create a trigger which should prevent the bulk deletion. The following is the trigger which I have written, it is preventing the bulk deletion. But the problem is, it is removing the single deletion entries in the audit table. I want audit table to hold back the single deletion entries without allowing the bult deletion

ALTER TRIGGER [dbo].[TRG_Delete_Bulk_tbl_attendance]
ON [dbo].[tbl_attendance]
AFTER DELETE
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;

[code]....

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Nov 13, 2006

I am having great difficulty with cascading deletes, delete triggers and referential integrity.

The database is in First Normal Form.

I have some tables that are child tables with two foreign keyes to two different parent tables, for example:

Table A
/
Table B Table C
/
Table D

So if I try to turn on cascading deletes for A/B, A/C, B/D and C/D relationships, I get an error that I cannot have cascading delete because it would create multiple cascade paths. I do understand why this is happening. If I delete a row in Table A, I want it to delete child rows in Table B and table C, and then child rows in table D as well. But if I delete a row in Table C, I want it to delete child rows in Table D, and if I delete a row in Table B, I want it to also delete child rows in Table D.

SQL sees this as cyclical, because if I delete a row in table A, both table B and table C would try to delete their child rows in table D.

Ok, so I thought, no biggie, I'll just use delete triggers. So I created delete triggers that will delete child rows in table B and table C when deleting a row in table A. Then I created triggers in both Table B and Table C that would delete child rows in Table D.

When I try to delete a row in table A, B or C, I get the error "Delete Statement Conflicted with COLUMN REFERENCE". This does not make sense to me, can anyone explain? I have a trigger in place that should be deleting the child rows before it attempts to delete the parent row...isn't that the whole point of delete triggers?????

This is an example of my delete trigger:

CREATE TRIGGER [DeleteA] ON A
FOR DELETE
AS
Delete from B where MeetingID = ID;
Delete from C where MeetingID = ID;

And then Table B and C both have delete triggers to delete child rows in table D. But it never gets to that point, none of the triggers execute because the above error happens first.

So if I then go into the relationships, and deselect the option for "Enforce relationship for INSERTs and UPDATEs" these triggers all work just fine. Only problem is that now I have no referential integrity and I can simply create unrestrained child rows that do not reference actual foreign keys in the parent table.

So the question is, how do I maintain referential integrity and also have the database delete child rows, keeping in mind that the cascading deletes will not work because of the multiple cascade paths (which are certainly required).

Hope this makes sense...
Thanks,
Josh


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Jul 6, 2015

I need a trigger to know who and when a char(1) column is changed.  Would like to write the audit trail to its own table I can query and record before and after values.

DDL:

CREATE TABLE [dbo].[Test](
[Customer] [varchar](12) NULL,
[Active] [char](1) NULL DEFAULT ('N') --Must use char 1 b/c more than 2 possible values
)

Insert into Test (Customer, Active) Values ('Acme','Y')..I want trigger to tell me whowhenwhere this value was changed.  If using sql auth capture client windows id if possible and write to audit table Update Test set Active = 'N'

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Nov 1, 2014

I have made a server security audit and specify from database audit specification to audit "select" on a certain user and on a certain table. I logged in by this user and made the select statement..when i run this query

"select * from sys.fn_get_audit_file('d:Auditaudit1*',null,null)"

It return a value at which time the query has done

after 15 minutes i repeated the same action, i run the audit query and the same result is showed off on the panel.is it suppose to return a list of values by how many times this user has made the select statement on that table ? for example at 5:00 pm then 6:00 pm and so on

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Jan 18, 2006

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Hi,

In Oracle, we have FOR EACH ROW Concept in triggers which can be used to manipulate to fire the trigger for each row.

How can we implement the same in SQL Server 7.0 ?

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Apr 23, 2001

Hello,
For SQL Server 6.5.
I need help if there is a way to fire a delete trigger when accidentenlty somebody deletes a record from say table AAA then this record should be
inserted in another dump table say Table BBBDump with table schema as table AAA plus some other columns like DB_NAME,Time when recorded
deleted from table AAA, user ID .


Thanks
Rajiv

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Nov 5, 2001

hi, I have a table as follow:

id amount
1 100
1 100
1 200
1 300

I put a deleted trigger on this table when a record is deleted, I update a balance in another table based on the deleted amount. This works fine when I am deleting one record at a time, but when I delete more than one record, the first value from the first record is captured to update the balance due and the rest of the of the records has not effect.
To elaborat more,
delete * from table1 where id =1 and amount =200 -- this works fine
delete * from table1 where id =1 and amount =100 -- the first 100 only update the balance in another table the second 100 does nothing,
any ideas, I appreciate your help.

Thanks

Ali

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Dec 13, 2004

I have a SQL statement that deletes a lot of records in a table (PACCESOS_DET) and a Trigger that fires for delete on the table.
The Trigger works fine when only one record is deleted but no when more than record is deleted; it only works for 1 and there is no error message.
For each row deleted I need to update a column in another table (PACCESOS_CAB).
This the trigger...

CREATE TRIGGER ActualizaDiasVisita ON dbo.PACCESOS_DET
FOR DELETE
AS
declare @mdias as int
declare @mFKFeria as int
declare @mtipo as char(1)
declare @mfkcontacto as varchar(7)

if exists( select * from PACCESOS_CAB m join deleted i on m.FKFeria= i.FKFeria and m.FKContacto=i.FKContacto and m.Tipo=i.Tipo)
begin
select @mfkferia=m.fkferia, @mfkcontacto = m.fkcontacto, @mtipo = m.tipo, @mdias = diasvisita from PACCESOS_CAB m join deleted i on m.FKFeria= i.FKFeria and m.FKContacto=i.FKContacto and m.Tipo=i.Tipo
update PACCESOS_CAB set diasvisita = @mdias -1 where FKFeria= @mFKFeria and FKContacto=@mFKContacto and Tipo=@mTipo
end




Thanks in advanced.

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Apr 28, 2008

i have created a view from two tables in my database (ProjectedOutputs, and Output)

since I am using the view in vb to fill a grid, i am trying to set up a INSTEAD OF DELETE trigger to delete any records in ProjectedOutputs that may be deleted from my grid. Although the records are deleting OK, so are the records in Output, which i dont want. i am not sure how to stop this, or to see if my trigger is actually firing, I would appreiciate any suggestions

CREATE TRIGGER Test
ON V_ProjectOutputs
INSTEAD OF DELETE
AS

DELETE PROJECTEDOUTPUTS
FROM PROJECTEDOUTPUTS JOIN deleted ON PROJECTEDOUTPUTS.ProjectedOutputID = deleted.ProjectedOutputID

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Feb 27, 2004

Hi, I'm building a website that interacts with MS SQLserver(v7) via a Buisiness Rule-layer developed in COM+ with VB(v6 sp5). The website is an add-on on a existing client/server app. Now I have delete triggers on almost every table and they work perfectly in the c/s app and when runned in the query analyzer. But when I try to do the same with COM+ I get the the next error message on line 10:
"Cannot use SAVE TRANSACTION within a distributed transaction."

Here follows the code. Hopefully anybody can help me with this problem.

SQL-statement:

Function getDeleteRequestSQL(ByRef strRequestId As String) As String
Dim strSQL As String
strSQL = "DELETE FROM thmld2 WHERE right(hdmcode,8)='" & strRequestId & "'"
getDeleteRequestSQL = strSQL
End Function

And then the place where the error occurs.

GetConnection cnConn
strSQL = getDeleteRequestSQL(reqId)
10 cnConn.Execute strSQL, , adExecuteNoRecords

And finaly the trigger:

create trigger td_thmld2 on thmld2 for delete as
begin
declare
@numrows int,
@errno int,
@errmsg varchar(255)

select @numrows = @@rowcount
if @numrows = 0
return

select @numrows = (select count(*) from trigstat with (nolock) )
if @numrows > 0
return

save transaction trans_td_thmld2 <-- REASON FOR ERROR?

/* delete all children in "thmstat" */
delete thmstat
from thmstat t2, deleted t1
where t2.hdmcode = t1.hdmcode

/* delete all children in "thmldlk1" */
delete thmldlk1
from thmldlk1 t2, deleted t1
where t2.hdmlmldcode = t1.hdmcode

/* errors handling */
error:
raiserror @errno @errmsg
rollback transaction trans_td_thmld2
end

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Apr 16, 2008

I'm trying to capture 'what' is deleting records from my tables.

I know what the data is but how do I know which user did it or which stored procedure caused it?

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May 13, 2008

Trying to create a trigger on a table that will delete any records in it that do not exist in another table.

Inserting into OrderRebateHistory Table.
if ordtype, ord_no, and line_seq_no do not exist in oelinhst then delete from OrderRebateHistory or do not insert.

Right now my code will insert the record. Then when another record gets inserted the previous record is deleted.

CREATE TRIGGER [DeletefromOrderRebateHistory] ON [dbo].[OrderRebateHistory]
for INSERT
AS

DELETE OrderRebateHistory
FROM OrderRebateHistory inner join oelinhst_sql on oelinhst_sql.ord_type = OrderRebateHistory.ord_type and
oelinhst_sql.ord_no = OrderRebateHistory.ord_no and oelinhst_sql.line_seq_no = OrderRebateHistory.line_seq_no
where oelinhst_sql.ord_type <>OrderRebateHistory.ord_type and oelinhst_sql.ord_no <> OrderRebateHistory.ord_no
and oelinhst_sql.line_seq_no <> OrderRebateHistory.line_seq_no

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Jul 17, 2007

hello,I googled around some time but I found no solution for this issue(SS2000).I have a table tblB which has to be filled whenever in another tabletblA records are inserted, updated or deleted.So I created one trigger which works fine for inserts and updates andfills my tblB. tblB is filled with other fields which I get from aview vwC.The issue is about this view. When in tblA a record is deleted, thecorresponding record in vwC does not exist and I can't fill tblB. Itried around with INSTEAD OF -Trigger and got error message becausetblA has RI cascades so this is not possible. A temp table could bethe right way? Can you show me an example?thanks--candide_sh

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Trigger After Delete - I Need A Trigger Before Delete

Jul 18, 2007

hello,I googled around some time but I found no solution for this issue(SS2000).I have a table tblB which has to be filled whenever in table tblArecords are inserted, updated or deleted.So I created one trigger which works fine for inserts and updates andfills my tblB. tblB is filled with other fields which I get from aview vwC. This view vwC is based on a key field used in tblA.The issue is about this view. When in tblA a record is deleted, thecorresponding record in vwC does not exist and I can't fill tblB. Itried around with INSTEAD OF -Trigger and got error message becausetblA has RI cascades so this is not possible. A temp table could bethe right way? Can you show me an example?thanks--candide_sh

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Aug 15, 2006

Hi how can i use delete trigger?

For example i've a two table like emp and emp_personal and now what i want to do is

i want to delete one row from emp table so how is it possible to delete automatically that emp's details from second table(emp_personal) ?

Ex:

emp emp_personal

emp_id emp_name emp_basic emp_id emp_address

101 Nagu 32,000 101 India

102 Vijay 35,000 102 South Africa

103 Ritesh 30,000 103 U.S

I want to delete employee who hav emp_id of 102 from emp table , so how can i delete automatically that employee details from second table i.e. emp_personal ?

Is it possible with triggers?

Thanx - Nagu

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