SQL 2005 CLR Triggers
Oct 1, 2007
I am writing a web app that will insert info into a table in SQL server 2005. When I insert into this table I need a trigger to fire. I read about CLR triggers and its exactly what I need, however to test that I've got it working correctly I only want this trigger to send me an email. After that works I will write it to POST the inserted record to a 3rd parties website. Right now I am getting a error message :
Request for the permission of type 'System.Net.Mail.SmtpPermission, System, Version etc.' failed
So where is the problem?? Is this with my code, or with sql server??
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Dec 27, 2007
Hello,Where are the triggers stored in SQL Server 2005?Another developer in our company had written a trigger, and he's left now - I need to modify the triggers, but I am not able to locate them. Thanks,
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Apr 28, 2006
I have created a C# trigger that I want to deploy to my Sql database, and have it fire whenever an "Update" event occurs for any of the tables within that database. The difficulty I am running into is that I have to define the "Target", which I do not want to do. The following lines of code are at the top of my trigger:
[Microsoft.SqlServer.Server.SqlTrigger (Name="GenericAuditTrigger", Target="Address", Event="FOR UPDATE")]
public static void GenericAuditTrigger()
If I leave out the "Target", I get an error. If I try to define the Target as
Target="Customer, Address"
I get an error that the object "Customer, Address" cannot be found. Does anyone know if what I am trying to do is possiblle? Will I need to create a trigger for each table in the database, rather than creating a "Global" trigger for the database?
Any help would be greatly appreciated.
Thanks!
Craig
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Nov 1, 2006
With SQL 2005, did Microsoft introduce login triggers? I seem toremember hearing something about it but, I don't remember exactly whatI heard.Thanks,JD
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Feb 6, 2008
Hi, I would really appreciate some help on this one as I know nothing about triggers to be quite honest.
I'm trying to add a feature to my Delphi 2007 application to start a SQL package whenever a load button on my Delphi form is clicked. Assume I'll need SQL code to perform this.
Can anyone please assist in this matter - sample code will also be much appreciated. Thanks a million!
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Oct 28, 2007
I have searched the net for atmost two days to find the solution of this problem but we not able to get the solution. I would appritiate if any one could help me in solving this issue:
I have a Table :
EMPLOYEES :
EMPID EMPNAME MANAGERID
1 abc NULL
2 xyz 1
3 hty 2
4 loi 3
I want to write a trigger for deleting the EMPLOYEE with EMPID=1 and the trigger should delete all the employees as there is cascading among them i.e EMPID 1 is the Manager of EMPID=2 and so on..
I found a solution at: http://msdn2.microsoft.com/en-us/library/aa902684(sql.80).aspx
but the solution does not work when i try to implement it . It deletes the record for abc,xyz in the above table but rest are not deleted by the trigger.
Can anybody tell me the exact Trigger code......
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Jan 17, 2008
Hi,
Where do I ask questions about creating SQL Server 2005 triggers? I want to create a field in a SQl server 2005 database based on a combination of four (4) fields in one table, and then have the data updated in a field in the same table, as well as output to the asp.net web form.
Any guidance appreciated.
Thanks.
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Mar 6, 2008
Hi all( Create a VB 2005 SQL Server Project )
i want to Create a Trigger using Managed Code in VB.Net (.NET CLR integration with SQL Server.)Somebody help me.Thanks
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Aug 15, 2006
For those intersted here is our TOC and the book's link. You can preorder at this point. We are sticking to the Nov. timeframe, but we may get it done sooner.
Chapter 1 Introducing SQLCLR
Chapter 2 Building a Procedure
Chapter 3 SQLCLR Strucutre & Common Tasks
Chapter 4 Creating Objects
Chapter 5 Compare & Contrast
Chapter 6 Replacing TSQL Objects
Chapter 7 Using the Base Library
Chapter 8 Using Procedures in Apps
Chapter 9 Error Handling
Chapter 10 Administration
Chapter 11 Case Study
Here is the link:
http://www.wrox.com/WileyCDA/WroxTitle/productCd-0470054034.html
Enjoy,
Derek
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Jun 5, 2006
Does anyone know if it's possible to use the standard .config file within a CLR Trigger to read properties via the System.Configuration namespace
I guess it's not possible because the CLR Trigger needs to be compiled as an assembly which is hosted by SQL Server
Thanks
Jason
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May 12, 2008
This isn€™t an problem as such, it€™s more of a debate.
If a table needs a number of update triggers which do differing tasks, should these triggers be separated out or encapsulated into one all encompassing trigger. Speaking in terms of performance, it doesn€™t make much of an improvement doing either depending upon the tasks performed. I was wondering in terms of maintenance and best practice etc. My view is that if the triggers do totally differing tasks they should be a trigger each on their own.
www.handleysonline.com
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Jan 3, 2007
Is it possible to achieve this using triggers:When someone tries to delete a row in table A, the trigger should first delete a corresponding row in table B and then delete the row in table A. The reason being that, there is a foreign key set on Table B that references table A. So any attempt to delete a row in table A without deleting the corresponding row from B, throws an error.
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May 31, 2007
Hello All,
I have to write Trigger for Update,
I have two tables, one is for storing records of current values, and one is for storing history of values.
How to Write a Trigger on Main Table. As we have Inserted and Deleted Tables through which we can find Values, We dont have any Table for UPDATED Values.
Help me.
General Problem
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Jun 15, 2007
I need to create a set of rows every time a new row is inserted into a table.
Example (I think this would work)...
select @insertedId = column1 from insertedselect @id = column1 from table1 where column2 in (select column1 from table2 where column2 = @insertedId)insert into table3 values(x, y, @id)
Is it possible to do the same kind of thing in a situation where the select statement returns multiple values and execute the insert statement for each of these values?
Also, if table3 was in fact the table on which the trigger acts, would it then be executed for every row created by the trigger?
Sorry if I sound confused. I am.
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Dec 6, 2007
hi everybody..i tried to put thios loop in sql server 2000 But it is not taking The @ action taken value ,,it is only taking the default value of @actiontaken value.
SET @ActionTaken = 'A'
IF (@AType = 'A')IF @Status= 'O' IF (@KAppInd ='Y' AND @DAppInd=null)BEGINSET @ActionTaken = 'O'END
Please tell me other option in sql server 2000 for setting variable value based on conditions
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Dec 21, 2007
Hi using triggers i try to insert some values in to my 2 tables: But its showing teh error as "The request for procedure 'Triginsert123s' failed because 'Triginsert123s' is a trigger object." This is my code in back end: sqlcon.Open() Dim cmd As New SqlCommand("Triginsert123s '" & txtID.Text & "','" & txtName.Text & "','" & txtRole.Text & "','" & txtDep.Text & "'", sqlcon) cmd.ExecuteNonQuery() sqlcon.Close() My trigger is: CREATE TRIGGER Triginsert123s ON [dbo].[EmpRole] FOR INSERT AS declare @Eid as tinyint, @Ename as varchar(50), @Role as char(10) Insert into Emprole(Eid,Ename,Role) values(@Eid,@Ename,@Role) insert into empdep(eid,dep) values(@eid,@Role) Whats the probs?, Plz i am new to triggers help me,
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May 9, 2004
Hi All,
I'm using triggers to handle my transaction log to cature inserts and updates. It works fine except if the user clicks on the Save button more than once, the trigger is fired and the record is written to the log even if the record wasn't changed. Does anyone know how to check if the record was actually changed so that it isn't written to the table if it wasn't?
Thank you,
Mike
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Jun 17, 2004
When I execute a stored proc from my asp.net page, will the results of a trigger be returned to my program?
For instance say my stored proc is:
Update Employees set
(Lastname = @Lastname)
where ID = @ID
And my trigger is:
CREATE TRIGGER tr_Employees_U on Employees FOR UPDATE AS
IF UPDATE(lastname)
BEGIN
RAISERROR ('cannot change lastname', 16, 1)
ROLLBACK TRAN
RETURN
END
GO
It seems like since this is an AFTER trigger that my webpage would actually get a valid return code from my stored procedure however the trigger would rollback those changes correct? Or would the trigger get fired and send it's return code to my webpage?
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Mar 5, 2006
I'm trying to write an instead of trigger for a view in SqlExpress...the table and views are defined as such:CREATE TABLE [dbo].[Work]( [WorkID] [int] IDENTITY(1,1) Primary Key, [ResourceID] [int] NOT NULL, [TaskID] [int] NOT NULL, [WorkDate] [datetime] NOT NULL, [WorkQuantity] [float] NOT NULL, [IsEstimate] [bit] NOT NULL DEFAULT ((0)), [Project] [int] NOT NULL,);CREATE VIEW [dbo].[ActualWork]ASSELECT WorkID, ResourceID, TaskID, WorkDate, WorkQuantity, ProjectFROM dbo.[Work]WHERE (IsEstimate = 0);CREATE VIEW [dbo].[EstimatedWork]ASSELECT WorkID, ResourceID, TaskID, WorkDate, WorkQuantity, ProjectFROM dbo.[Work]WHERE (IsEstimate = 1);Given that, what is wrong with the following create trigger statement:Create Trigger trg_InsertActualWork ondbo.ActualWork Instead of InsertasBEGIN Insert into dbo.Work( ResourceID, TaskID, Project, WorkDate, WorkQuantity, IsEstimate ) values ( inserted.ResourceID, inserted.TaskID, inserted.Project, inserted.WorkDate, inserted.WorkQuantity, 0 );END
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Dec 4, 2001
l'm trying to build a trigger on a table. The reason for the trigger is to check a certain field for the first three characters if it has ie abc it must update another field in this case loanbook to newabc.How do l write the trigger so that it also check if exists and perform the updates. Please help its Urgent. l've listed the trigger below.
CREATE TRIGGER UpdTest_TRGData
ON Test_TRG
FOR insert,Update AS
IF left('Loan_No',3)='ABC'
update Test_TRG
set loanbook = 'NEWABC'
else
IF left('Loan_No',3)='DEF'
update Test_TRG set
loanbook = 'NEWDEF'
where loanbook is null
else
update Test_TRG
set loanbook =left('Loan_No',3)
where loanbook is null
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Dec 5, 2001
I'm a bit confused on this bit please elaborate : " FROM Test_TRG t INNER JOIN inserted i ON t.PK = i.PK ".
The PK is on which field? Basically this trigger should ensure that on insertion of o new loan if
The left(loan_no,3)=MCG and its null then NEWMCG
left(loan_no,3)=MCG and its null then NEWMCG
left(loan_no,3)=KVS and its null then NEWKVS
left(loan_no,3)=MFS and its null then MFS
left(loan_no,3)=TCR and its null then TCR
left(loan_no,3)=ABL and its null then ABL
Listed below is what l've tried to do but l'm missing the PK part.Otherwise everything else you explained
in the script is clear. Thanks man its urgent. When l parse the query its fine , but When l run it
l get an error.
CREATE TRIGGER UpdTest_TRGData
ON Test_TRG
FOR INSERT, UPDATE
AS
UPDATE Test_TRG
SET LoanBook = CASE WHEN LEFT( i.Loan_No, 3 ) = 'MCG' THEN 'NewMCG'
WHEN LEFT( i.Loan_No, 3 ) = 'KVS' AND i.LoanBook IS NULL THEN 'NewKVS'
WHEN LEFT( i.Loan_No, 3 ) = 'MFS' AND i.LoanBook IS NULL THEN 'MFS'
WHEN LEFT( i.Loan_No, 3 ) = 'ABL' AND i.LoanBook IS NULL THEN 'ABL'
WHEN i.LoanBook IS NULL THEN LEFT( i.Loan_No, 3 )
END
FROM Test_TRG t INNER JOIN inserted i ON t.PK = i.PK
-- Fill in Primary Key or other Join Column(s)
WHERE LEFT( i.Loan_No, 3 ) = 'MCG'
OR ( LEFT( i.Loan_No, 3 ) = 'KVS' AND i.LoanBook IS NULL )
OR i.LoanBook IS NULL
====== Error message =================
Server: Msg 207, Level 16, State 3, Procedure UpdTest_TRGData, Line 11
Invalid column name 'PK'.
Server: Msg 207, Level 16, State 1, Procedure UpdTest_TRGData, Line 11
Invalid column name 'PK'.
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Jan 11, 2002
I an loading records from a flat file into a table, which is done everyday by a scheduled job in SQL Server 7.0.
How can I make sure that if the job is run twice in a day for some reason that the same rows are not inserted into the table again? Do I have to write a insert trigger on the table ??? If so how can I achive the objective ??
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Jan 31, 2002
Hi! i have a simple question...is possible to create a trigger who affect multiple tables?
The idea will be something like this:
create trigger mytrigger
on sales, users
as...
of course, this don´t work :)
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Aug 3, 2001
Hey everyone...
I'm working on trying to figure out how to update the child table from the parent via a trigger. This works fine as long as the value is in the child table. If it's not, then I get my foreign key violation. So, My next thought was to simply put in a begin tran / rollback tran within the trigger... My question is this : If I have multiple triggers on the parent table all based on the update of the key field (and the child tables... some 7 of them) all have FK's, if I rollback one trigger does it rollback the entire transaction? Or just the functionality of that trigger? From what I've read, it appears as if it's the entire transaction... if so, how do I get a trigger to 'ignore' itself or not fire based on a select criteria that i have within that same trigger...
Thank you...
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Oct 24, 2001
I just tried creating my first trigger and I'm a little bit confused. I am trying to see if certain fields have changed and will do that by checking the values of the fields in the "master" table and the "Inserted" table. I wasn't sure which table would have the old data and which would have the new, so I created the following trigger to help me determine which was which:
CREATE Trigger upd_cost_master On tbl_cost_master
For Insert, Update As
Declare @U_Name varchar(65)
Declare @O_Name varchar(65)
Select @U_Name=I.submitted_by, @O_Name=O.submitted_by
From tbl_cost_master O Inner Join Inserted I On O.autokey = I.autokey
Print 'Inserted: ' + @U_Name
Print 'tbl_cost_master: ' + @O_Name
Commit Tran
To my surprise, @U_Name and @O_Name contained the same values. I though that one table contained the old values and one contained the new. Was I wrong? If so, is there anyway to compare the Old and New values through a trigger?
Chris
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Jul 20, 2000
Hi,
I'm using SQL Server 7.0. I have an insert trigger on table t05r. I populate table t05r with a DTS package. The trigger is supposed to add the record which was inserted into t05r, into t39r. After I run the DTS package to populate t05r, I checked t39r and no records where added. What is going wrong? Is it that DTS uses bulk copy and triggers don't fire on bulk copy?
Any help would be greatly appreciated.
Thanks in advance,
Darrin
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Nov 1, 1999
I have an insert trigger on table A which inserts records into table B.
This insertion into B fails( or may fail ) at certain conditions.
I do not want the insertion into A to be affected because of this. Any ways to achieve this ?
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Oct 8, 1999
Hi,
I have 3 tables A,B C and Triggers on each table like.
for insert/update on table 'C' calculates sum(xxfield) and updates
table 'B'.
for insert/update on table 'B' calculates sum(yyfield) and updates
table 'A'.
This works fine if I insert rows OneByOne.
Problem :- Doesn't work if I post entries(hundreds) in to table 'C' using a Query.
whats happening. Can anyone help Me????????
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Nov 12, 2001
How do I know if the triggers on table has been disabled or not. Thanks for your ideas!!!!
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Nov 21, 2002
Hello,
I've update triggers on my table, But for some of the transactions, I don't want the triggers to fire. I know in Sybase there are set triggers off. In MS SQL, Is there any similar commands which will set triggers off for particular sql statements.
Thanks A Lot
Sejal
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May 1, 2003
Hi! I am having trouble with setting triggers while doing my project. The project is on ATM machine driven through SQL. So I have Date of Transaction in one table and Account Expiry in another.
I want to set the trigger to check Account expiry when doing transaction so i wrote T-SQL
select........
getDate()-Dateoftransaction=expiry
begin '...'
end
the system saying I have got an error near the word 'begin'.
I am desperately needing help. running out of ideas.
Thanks in advance.
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Jan 18, 2005
I need to create an after insert, update and delete trigger on the same table. Can I create one trigger that would have all three operations in it or I need to create three separate triggers? Thanks for your help.
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Feb 23, 2006
I have not used triggers before and wanted to know if it was approproate for my issue:
When a new user registers via the web, a record is inserted into the "student" table. I would also like to insert a record into the "StudentCourse" table that adds this new student to a class (studentID, CourseID). I thought I could look into a trigger or stored procedure for this. The problem is that I do not want to mess with the programming side of it as it is an off the shelf system and written in Java/JSP, so I would like to handle this in the DB.
Thanks in advance,
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