SQL Trap With A Trigger
Jan 16, 2008
Hi
I am trying to create a trap to catch one of my developers which is messing around on my Live system, where he doesn't belong. I have already created a trigger which is logging and catching the guy out, but i need to know which queries he is executing on this table.
Here is my trigger:
Code Block
ALTER TRIGGER [dbo].[ctr_SQLTrapDelete] ON [dbo].[Members]
AFTER DELETE
AS
INSERT INTO SQLTrap ([User], TYPE, DateValue, HostName, SystemUser, TableName)
SELECT USER_NAME(), 'DELETE', GETDATE(), HOST_NAME(), SYSTEM_USER, 'Members'
I want to add a Query field at the end of the table with the query that the guy executed.
Will anyone be able to tell me how where i am going to find the query that he executed, i am unsure of where it will reside.
I think possible in the Master.dbo.syscomments table but i'm unsure of how i am going to track the query to insert it into the table with the timestamp.
Any help will be greatly appreciated.
Kind Regards
Carel Greaves
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Mar 26, 2008
Hi,
I have a page with only a Datasource and a Gridview that allows Delete. In the database there is a referential integrity (RI) to the one of the columns. When a user tries to delete the row, the RI stops the delete and throws an error message the way it should. But it also create a hard failure on the page.
How do I trap the error message so I can display a message "Referential Integrity denied deletion of this record." rather than having it fail ?
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Aug 16, 2004
We are running SQL 2000 sp3a on Win2003 Server with all patches and SPs applied.
I want to run a stored procedure from a SQL Agent job. I want the stored procedure to run as a TRANSACTION to force a ROLLBACK in case of failure. However, if execute the procedure and an error of severity level 20 (I think) or greater happens I get blown out of the job immediately. Therefore I cannot call RAISEERROR or use @@ERROR. So, how do I assure that I can ROLLBACK the TRANSACTION?
I have searched the web and BOL and cannot find anything that addresses this specifically.
Thanks in advance for any help.
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Aug 31, 2007
I'm using System.Net.Mail in a script task to send HTML email via SMPT client as follows:
Imports System
Imports Microsoft.SqlServer.Dts.Runtime
Imports System.Net.Mail
Imports System.Net
Public Class ScriptMain
Public Sub Main()
Dim myHtmlMessage As MailMessage
Dim mySmtpClient As SmtpClient
myHtmlMessage = New MailMessage("<from>", _
"<to>, _
"Test HTML Message", _
Dts.Variables("HtmlText").Value.ToString)
myHtmlMessage.IsBodyHtml = True
mySmtpClient = New SmtpClient("<smtpservername")
mySmtpClient.Credentials = CredentialCache.DefaultNetworkCredentials
mySmtpClient.Send(myHtmlMessage)
Dts.TaskResult = Dts.Results.Success
End Sub
End Class
I need to be able to trap an error when the email address is undeliverable. Is there a way to do this in SSIS? I am validating the email address before sending, but it can still come back as undeliverable. I need to be able to catch this.
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Apr 10, 2006
I have a system using asp pages & ADO & SQL Server 2000, which processes files, builds a SQL insert statement from the file content and then executes it.
If the insert SQL fails, I need to know whether there was something wrong with the insert SQL, or something wrong with the database (e.g. SQL Server times out), and handle those differently,
Questions
=======
1. Is there an easy way to do this without checking against a list of error codes?
2. Can anyone point me to a list of errorcodes? Can't find this anywhere
thank you
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Dec 8, 2006
hi i am running a stored procedure and i want to trap the error of that stored procedure and pass it on the user in the asp.net prog.
my stored procedure are running thru a class library using C#. i tried various options of creating a new sql connnection with out using the classlibrary, but i dont get any errors. the code s
used is as follows Dim conn As New SqlConnection(System.Configuration.ConfigurationManager.AppSettings("dbconnection1"))
Dim cmd As New SqlCommand("usp_ImportPlanDetails", conn)
cmd.CommandType = CommandType.StoredProcedure'cmd.Parameters.AddWithValue("@ClientId", Session("ClientId"))
AddHandler conn.InfoMessage, New SqlInfoMessageEventHandler(AddressOf MessageEventHandler)
conn.Close()
Private Sub MessageEventHandler(ByVal sender As System.Object, ByVal e As SqlInfoMessageEventArgs)
Dim strMessage As String
For Each sqle As SqlError In e.Errors
strMessage = "Message:" + sqle.Message + "Number:" + sqle.Number + "Procedure:" + sqle.Procedure + "Server:" + sqle.Server + "Source:" + sqle.Source + "State:" + sqle.State + "Line Number:" + sqle.LineNumber
' strMessage = String.Format("Message: {1}, Number: {2}, Procedure: {3}, Server: {4}, Source: {5}, State: {6}, Line Number: {7}" , new Object[]{sqle.Message, sqle.Number, sqle.Server, sqle.Source, sqle.State, sqle.LineNumber})
'Console.WriteLine(strMessage)
lblErrorMsg.Visible = True
lblErrorMsg.Text = strMessage
and also tried doing this oImportPlan = New ImportPlan(System.Configuration.ConfigurationManager.AppSettings(APPSETTINGS_CONNECTION))
With oImportPlan
Try
.ClientID = Session("ClientId")
' .FileName = strFilePath1
.save()
Catch sqlex1 As SqlException
LogException(sqlex1)
End Try
End With
Catch sqlex As SqlException
LogException(sqlex)
End Try
Catch ex As Exception
lblErrorMsg.Text = "Error: Import Failed" + ex.Message
lblErrorMsg.Visible = True
End Try but have no luck in displaying the errors, My stored procedure has raiseerrors, Please help me out
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May 26, 2004
My simple question:
Is there any way to prevent unimportant errors in a stored procedure from causing exceptions in my C# code? This is preventing the SqlAdapter from filling the query results into my DataSet.
The Setup:
I have a Stored Procedure in Sql Server 2000 which has a text parameter called @Xml. I send in an Xml document to process. This document contains several "records" to process. The format of the xml really isn't important.
I create a temporary table called #Results to hold the results of processing each record in the xml.
To process the xml I have a Cursor which loops over a SELECT from the xml.
For each record, the sproc attempts to make a series of INSERTs and UPDATEs inside of a transaction. Any one of these commands may fail because of constraint violations or attempts to insert NULL into non-null columns, or such. After each command I check @@ERROR. If it is not zero, I stop processing the record and rollback the transaction. The cursor loops around and tries the next record. Each time the success or failure of the transaction is recorded into the #Results table.
When the cursor is done looping I 'SELECT * FROM #Results'.
I've tested this many times in the Query Analyzer and each time, regardless of any errors, I can see the result set from the SELECT of the #Results table in the Grids tab. The Messages tab shows each of the errors that occurred.
I try to call this stored procedure using the following code:
int c = 0;
try
{
sqlAdapter.Fill( sqlDS );
}
catch( System.Data.SqlClient.SqlException )
{
c = sqlDS.Tables.Count;
}
The value of c will always be zero, if there were any errors during the execution of the stored procedure. The DataSet does not get filled, even though the stored procedure is returning a result set. This is a problem for me because I expect errors to occur, and I need to know which records from the Xml caused those errors.
Is there any way to clear the errors in my stored procedure so that they don't turn into exceptions in my code? Or, is there anyway to get the Adapter to fill the DataSet regardless of any errors that were encountered?
I've also tried this with a SqlDataReader. The reader never gets assigned to because SqlCommand.ExecuteReader() throws an exception.
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Jan 29, 2007
I have an SSIS package that fires an OnTaskFailed event whenever any of my tasks fail.
I would like to put any SSIS task failure message into a user defined variable.
Any idea how to do this?
Any help appreciated.
Regards,
Paul.
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Feb 9, 2006
Hi All,
I have a database with primary and Unique key contraints on SQL Server 2000. I'm front ending it with Access 2k.
I want to trap the error when the Unique key constraint is hit, but i can't capture the error number. All attempts return error 0.
The error i get is
[Microsoft][ODBC SQL Server Driver][SQL Server]Violation of UNIQUE KEY constraint 'IX_lut_Referral_Source'. Cannot insert duplicate key in object 'lut_Referral_Source'. (#2627)[Microsoft][ODBC SQL Server Driver][SQL Server]The statement has been terminated. (#3621)
I've tried the soultion given here http://support.microsoft.com/kb/q185384 but now get a Type mismatch error on errStored
SaveRecODBCErr:
' The function failed because of an ODBC error.
' Below are a list of some of the known error numbers.
' If you are not receiving an error in this list,
' add that error to the Select Case statement.
For Each errStored In DBEngine.Errors
Thanks for your help
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Jul 23, 2005
Greeting All, I have a stored proc that dynamically truncates all thetables in my databases. I use a cursor and some dynamic sql for this:......create cursorLoop through sysobjects and get all table names in my database.....exec ('truncate table ' + @TableName)Now, I want to be able to determine if an error occurred or not nad logthat error to a table in another database.However, when I try to trap the value of @@ERROR after theexec ('truncate table ' + @TableName) when an actual error occurs itfails. My error was synthetically created by placing a foreign key onthe table which precludes the option of truncation:Server: Msg 4712, Level 16, State 1, Line 1Cannot truncate table 'MyTable' because it is being referenced by aFOREIGN KEY constraint.The actual relevant code snippet is:BEGINBEGINSET @v_RowCount = (SELECT rowcntFROM sysindexesWHERE id = (SELECT idFROM sysobjectsWHERE name = @v_Name)AND indid IN (0,1))EXEC('truncate table ' + @v_Name)-- If there was an error truncating the current table.-- Write the event to the MessageLog table.IF (@@ERROR <> 0)BEGINSET @v_OutputMessage = ('There was an error ' + @v_name)INSERT INTO MessageLog (message) values (@v_outputmessage)RETURN (-1)ENDLike I was saying, when the error is generated because of the foreignkey the variable @@error is never set to 4712, in fact if I were to puta "select @@ERRROR" directly below the "exec('tru..')" statement itwould never be executed. The only thing that would show up inEnterprise Manager would be the:Server: Msg 4712, Level 16, State 1, Line 1Cannot truncate table 'MyTable' because it is being referenced by aFOREIGN KEY constraint.Any ideas as to what is going on here?Thanks, TFD.
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Mar 30, 2006
Hello, I have the following code to iterate through each view in a SQLServer and call the "sp_refreshview" command against it. It worksgreat until it finds a view that is damaged, or otherwise cannot berefreshed. Then the whole routine stops working.Can someone please help me re-write this code so that any views thatfail the "sp_refreshview" command get skipped. I'm sure it's just amatter of putting some basic error trapping into the loop, but I've hada few goes at it and failed.Many thanks.DECLARE @DatabaseObject varchar(255)DECLARE ObjectCursor CURSORFOR SELECT table_name FROM information_schema.tables WHERE table_type ='view'OPEN ObjectCursorFETCH NEXT FROM ObjectCursor INTO @DatabaseObjectWHILE @@FETCH_STATUS = 0BEGINEXEC sp_refreshview @DatabaseObjectPrint @DatabaseObject + ' was successfully refreshed.'FETCH NEXT FROM ObjectCursor INTO @DatabaseObjectENDCLOSE ObjectCursorDEALLOCATE ObjectCursorGO
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Jul 23, 2005
Below is the script. The problem is when I simulated the Oracle linkdrop, my SQL2K never have to a chance to head to the GOTO section as itdies with this error msg and exit. Any idea on a workround? Thanks.Server: Msg 7399, Level 16, State 1, Procedure USP_Link_Check, Line 8OLE DB provider 'MSDAORA' reported an error.[OLE/DB provider returned message: ORA-12154: TNS:could not resolveservice name]OLE DB error trace [OLE/DB Provider 'MSDAORA' IDBInitialize::Initializereturned 0x80004005: ].----------------------------------------------ALTER PROCEDURE [USP_Link_Check] ASDECLARE @myERROR int -- Local @@ERROR, @myRowCount int -- Local @@ROWCOUNT--- Verify network connectionsselect *from openquery(OraLink,'select count(*) from Oracle.table')IF @myERROR != 0 GOTO HANDLE_ERRORHANDLE_ERROR:Print ' Error in Oracle Link'RETURN @myERROR---------------------------------------------
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Mar 12, 2007
Dear all,
I am running into a null reference exception on replication with SQL Server 2005 Compact Edition. The problem occurs at repl.synchronize(). Even though the statement is inside a try-catch block, the exception is not caught, and the application quits.
Device O/S: Windows Mobile 5.0 v 5.1.195 Build 14957.2.3.1
Hardware: Dell Axim X51v, Intel PXA270
Database: SQL 2005 SP2 (no post SP2-patches)
Exception shows as "an unexpected error has occured in AppName.exe. Select Quit and then restart this program, or select Details for more information." Details:
.. at NullReferenceException at AppName.Form1.Synch()
.. at .... (various lines)
.. at AppName.Form1.Main()
The application is based on the tutorial (Creating a Mobile Application with SQL Server Compact Edition) at http://msdn2.microsoft.com/en-us/library/ms171908.aspx.
The application was successfully working initially but then stopped working on replication after some minor modifications which were not related to the replication code, e.g. adding some buttons to the form.
Three things are puzzling me here..
1. The fact that this is a NullReferenceException and not a SqlCeException
2. Why the try-catch block doesn't work
3. Why the exception occurs
Is this a bug or am I doing something wrong here?
Any help would be appreciated.
Code sample below:
Sub Synch()
Try
LogMsg("Deleting db...")
DeleteDB()
LogMsg("Initializing repl...")
Dim repl As New SqlCeReplication
repl.InternetUrl = http://192.168.0.100/SQLMobile/sqlcesa30.dll
repl.Publisher = "TRKSRV"
repl.PublisherDatabase = "trk_db"
repl.PublisherSecurityMode = SecurityType.NTAuthentication
repl.Publication = "Trk"
repl.Subscriber = "Trk"
repl.SubscriberConnectionString = "Data Source=""Program FilesTrk2007DefectTrk.sdf"";Max Database Size=128;Default Lock Escalation =100;"
LogMsg("Adding subscription...")
repl.AddSubscription(AddOption.CreateDatabase)
LogMsg("Synch...")
repl.Synchronize()
LogMsg("Cleanup...")
repl = Nothing
Catch err As SqlCeException
MessageBox.Show(err.ToString & " " & err.HResult & " " & err.NativeError & " " & err.Message & " " & err.InnerException.ToString)
Catch err2 As Exception
MessageBox.Show(err2.ToString & " " & err2.Message.ToString & " " & err2.InnerException.ToString)
End Try
End Sub
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Jul 2, 2007
Hi all,
Suppose I have set a CHECK constraint to a column where Salary field is not permitted to be less than 1000 or greater than 10000.
In this situation, when I insert a new record with salary as 10, using a stored procedure from Visual Studio, how will I trap the error from C# Code?
Thanks
Tomy
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Oct 26, 2004
Hi,
On my aspx Web page, I want to delete a member from database table 'tblMember', but if this MemberID is used as FK in another table, I want to display a user friendlier message like "You cannot delete this member, ....." I am using Try, Catch blocks in my Web Page.
Currently it display this message:
"DELETE statement conflicted with COLUMN REFERENCE constraint 'FK_..._....' The conflict occurred in database '...', table 'tblMembers', column 'MemberID'. The statement has been terminated. "
So how should I precisely trap this error? Does anybody know what Exception is it? or what error number in SQL server?
Thanks
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Oct 25, 2007
I have some date criterias on my report that default and so I would like for the report not to display until the user clicks on the "view report" button.
Also, I would like to trap that button to send my own internal parameters to the report. How and where would I do that.
I'm running the report through report viewer and I have a subroutine that would refresh the report with my desired internal parameters. I just need to hook it up.
Thanks for any help or information.
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Nov 14, 2006
Hey,
I'm new to this whole SQL Server 2005 thing as well as database design and I've read up on various ways I can integrate business constraints into my database. I'm not sure which way applies to me, but I could use a helping hand in the right direction.
A quick explanation of the various tables I'm dealing with:
WBS - the Work Breakdown Structure, for example: A - Widget 1, AA - Widget 1 Subsystem 1, and etc.
Impacts - the Risk or Opportunity impacts for the weights of a part/assembly. (See Assemblies have Impacts below)
Allocations - the review of the product in question, say Widget 1, in terms of various weight totals, including all parts. Example - September allocation, Initial Demo allocation, etc. Mostly used for weight history and trending
Parts - There are hundreds of Parts which will eventually lead to thousands. Each part has a WBS element. [Seems redundant, but parts are managed in-house, and WBS elements are cross-company and issued by the Government]
Parts have Allocations - For weight history and trending (see Allocations). Example, Nut 17 can have a September 1st allocation, a September 5th allocation, etc.
Assemblies - Parts are assemblies by themselves and can belong to multiple assemblies. Now, there can be multiple parts on a product, say, an unmanned ground vehicle (UGV), and so those parts can belong to a higher "assembly" [For example, there can be 3 Nut 17's (lower assembly) on Widget 1 Subsystem 2 (higher assembly) and 4 more on Widget 1 Subsystem 5, etc.]. What I'm concerned about is ensuring that the weight roll-ups are accurate for all of the assemblies.
Assemblies have Impacts - There is a risk and opportunity impact setup modeled into this design to allow for a risk or opportunity to be marked on a per-assembly level. That's all this table represents.
A part is allocated a weight and then assigned to an assembly. The Assemblies table holds this hierarchical information - the lower assembly and the higher one, both of which are Parts entries in the [Parts have Allocations] table.
Therefore, to ensure proper weight roll ups in the [Parts have Allocations] table on a per part-basis, I would like to check for any inserts, updates, deletes on both the [Parts have Allocations] table as well as the [Assemblies] table and then re-calculate the weight roll up for every assembly. Now, I'm not sure if this is a huge performance hog, but I do need to keep all the information as up-to-date and as accurate as possible. As such, I'm not sure which method is even correct, although it seems an AFTER DML trigger is in order (from what I've gathered thus far). Keep in mind, this trigger needs to go through and check every WBS or Part and then go through and check all of it's associated assemblies and then ensure the weights are correct by re-summing the weights listed.
If you need the design or create script (table layout), please let me know.
Thanks.
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Jul 20, 2005
Are there any limitations or gotchas to updating the same table whichfired a trigger from within the trigger?Some example code below. Hmmm.... This example seems to be workingfine so it must be something with my specific schema/code. We'reworking on running a SQL trace but if anybody has any input, fireaway.Thanks!create table x(Id int,Account varchar(25),Info int)GOinsert into x values ( 1, 'Smith', 15);insert into x values ( 2, 'SmithX', 25);/* Update trigger tu_x for table x */create trigger tu_xon xfor updateasbegindeclare @TriggerRowCount intset @TriggerRowCount = @@ROWCOUNTif ( @TriggerRowCount = 0 )returnif ( @TriggerRowCount > 1 )beginraiserror( 'tu_x: @@ROWCOUNT[%d] Trigger does not handle @@ROWCOUNT[color=blue]> 1 !', 17, 127, @TriggerRowCount) with seterror, nowait[/color]returnendupdate xsetAccount = left( i.Account, 24) + 'X',Info = i.Infofrom deleted, inserted iwhere x.Account = left( deleted.Account, 24) + 'X'endupdate x set Account = 'Blair', Info = 999 where Account = 'Smith'
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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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Oct 30, 2007
Table 1
First_Name
Middle_Name
Surname
John
Ian
Lennon
Mike
Buffalo
Tyson
Tom
Finney
Jones
Table 2
ID
F
M
S
DOB
1
Athony
Harold
Wilson
24/4/67
2
Margaret
Betty
Thathcer
1/1/1808
3
John
Ian
Lennon
2/2/1979
4
Mike
Buffalo
Tyson
3/4/04
5
Tom
Finney
Jones
1/1/2000
I want to be able to create a trigger that updates table 2 when a row is inserted into table 1. However I€™m not sure how to increment the ID in table 2 or to update only the row that has been inserted.
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Feb 5, 2008
A
ID
Name
1
Joe
2
Fred
3
Ian
4
Bill
B
ID
1
4
I want to be able to create a trigger so that when a row is inserted into table A by a specific user then the ID will appear in table B. Is it possible to find out the login id of the user inserting a row?
I believe the trigger should look something like this:
create trigger test_trigger
on a
for insert
as
insert into b(ID)
select i.id
from inserted i
where
--specific USER
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Mar 18, 2008
how to create new CLR trigger from existing T-Sql Trigger Thanks in advance
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Jul 23, 2005
When a row gets modified and it invokes a trigger, we would like to beable to update the row that was modified inside the trigger. This is(basically) how we are doing it now:CREATE TRIGGER trTBL ON TBLFOR UPDATE, INSERT, DELETEasupdate TBLset fld = 'value'from inserted, TBLwhere inserted.id= TBL.id....This work fine but it seems like it could be optimized. Clearly we arehaving to scan the entire table again to update the row. But shouldn'tthe trigger already know which row invoked it. Do we have to scan thetable again for this row or is their some syntax that allows us toupdate the row that invoked the trigger. If not, why. It seems likethis would be a fairly common task. Thanks.
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Jul 20, 2005
Salve, non riesco a disabilitare un trigger su sqlserver nè da queryanalyzer, nè da enterprise manager.In pratica tal cosa riuscivo a farla in Oracle con TOAD, mentre qui nonriesco.Mi interessa disattivarlo senza cancellarlo per poi riattivarlo al bisognosenza rilanciare lo script di creazione.Grazie a tuttiHi I need to disable a DB trigger and I'm not able to do this neither withquery analyzer, neither with enterprise manager.I remeber this job was quite simple using TOAd in Oracle.I'm interested in making it disabled not delete it, without run creationscript.Thanks a lot to everybody.
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May 30, 2008
Hi,
I am not sure if this is the right forum to post this question.
I run an update statement like "Update mytable set status='S' " on the SQL 2005 management Studio.
When I run "select * from mytable" for a few seconds all status = "S". After a few seconds all status turn to "H".
This is a behaviour when you have an update trigger for the table. But I don't see any triggers under this table.
What else would cause the database automatically change my update?
Could there be any other place I should look for an update trigger on this table?
Thanks,
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Sep 20, 2007
Hi all in .net I've created an application that allows creation of triggers, i also want to allow the deletion of triggers.
The trigger name is kept in a table, and apon deleting the record i want to use the field name to delete the trigger
I have the following Trigger
the error is at
DROP TRIGGER @DeleteTrigger
I'm guessing it dosen't like the trigger name being a variable instead of a static name
how do i get around this?
thanks in advance
-- ================================================
-- Template generated from Template Explorer using:
-- Create Trigger (New Menu).SQL
--
-- Use the Specify Values for Template Parameters
-- command (Ctrl-Shift-M) to fill in the parameter
-- values below.
--
-- See additional Create Trigger templates for more
-- examples of different Trigger statements.
--
-- This block of comments will not be included in
-- the definition of the function.
-- ================================================
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author: <Author,,Name>
-- Create date: <Create Date,,>
-- Description: <Description,,>
-- =============================================
CREATE TRIGGER RemoveTriggers
ON tblTriggers
AFTER DELETE
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
Declare @DeleteTrigger as nvarchar(max)
select @DeleteTrigger = TableName FROM DELETED
IF OBJECT_ID (@DeleteTrigger,'TR') IS NOT NULL
DROP TRIGGER @DeleteTrigger
GO
END
GO
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Jan 23, 2008
Hi,
I have a trigger set on TABLE1 so that any update to this column should set off trigger to write to the AUDIT log table, it works fine otherwise but not the very first time when table1 has null in the column. if i comment out
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)
select i.req_guid, i.req_fname, 'req_fname', IsNull(i.req_last_update_user,@default_user) as username from inserted i, deleted d
where i.req_guid = d.req_guid
and i.req_fname <> d.req_fname
Thanks,
leo
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Mar 3, 2008
I have trigger, but not execute somedata because insert few row in every second. I use java to insert data to SQL server 2005. Data inserted to a table but not executing trigger for some data.
For example 100 data every second inserted to a table.
If insert data one by one to a table trigger fires success.
Please Help me.
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Jun 17, 2006
There are two different Stored Procedures insert data into a table, is it possible to catch what stored procedure name was that trigged the trigger in the trigger?
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Jul 26, 2006
Hi, I am trying to script a trigger on a table to accomplish the following... If a row is updated then the value in the 'date' column in that specific row would update to getDate().
I have never created a trigger before and finding it very difficult. Thank you very much in advance.
Kind Regards,
Sean.
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Feb 4, 2007
Hello
I am having difficulty try to get a trigger to work.
I need to create a trigger querie that will insert a row from TableMain (Column LNames) table to TableA (Column LNames)
Below is my querie
CREATE TRIGGER [trig_addTable_A]ON Table_A FOR INSERT ASINSERT LName (LName)
SELECT LNameFROM TableMain inserted
I have inserted test names into the main table but nothing in table A has inserted. What have I done wrong.
Thanks
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Mar 11, 2007
I am looking for a INSERT trigger example, to achieve the following objective:
I would like the trigger to be fired when a row gets inserted into a table. I want to retrive some value from the inserted row and use this value to insert a new row in table 2.
Thanks
chri
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Mar 17, 2007
is it possible to run a trigger forever... whose work is to archive data from a table. or how can i do the operation to archive automatically ?Regards,Kamrul Hassan
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