How Many Triggers Can Be Added In A Table

Multiple Triggers On A Table Or Encapsulated Triggers

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.

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Automatically Adding Records To Child Table When Record Added To Parent Table

In SQL Server 2000, I have a parent table with a cascade update to a child table. I want to add a record to the child table whenever I add a table to the parent table. Thanks

I Added A Column To A Table, But, I Can't See It.

I ran the code below that adds a column to an SQL table.

I refreshed Data Sources, but, the new column does not appear.

I refreshed Server Explorer and the new column does not appear.

I tried running the code again and I got:

"Column names in each table must be unique. Column name 'CaseNbr' in table 'Patient' is specified more than once."

so the column did actually get added, but, I can't see it.



Imports System.Data.SqlClient

Public Class Form1

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

'Try

Dim sqlConnection As New System.Data.SqlClient.SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Patient.mdf;Integrated Security=True;User Instance=True")

Dim str As String = "ALTER TABLE Patient ADD CaseNbr Varchar(50)"

Dim command As New System.Data.SqlClient.SqlCommand(str, sqlConnection)

sqlConnection.Open()

command.ExecuteNonQuery()

sqlConnection.Close()

'Catch

'End Try

Close()

End Sub

End Class

Is It Possible To Find Out When A Particular Column Was Added To A Table?

Is it possible to find out when a particular column was added to any table?

Thanks

Dbo Schema Added When I Rename Table

i recorded a script for a change i need to make. actually 15 so far, i am getting ready to bring an access db with no pk or fk and only 1 relation over to ss05

my scripts are used to add the need pk fk to the tables and then move the data from the temptbl to the new one

1 thing i have been noticing is code like below will rename the table dbo.aMgmt.Employee and with that all the remaing lines of the script will fail.

DROP TABLE aMgmt.Employee
GO
EXECUTE sp_rename N'dbo.Tmp_Employee', N'aMgmt.Employee', 'OBJECT'
GO

any help?

Can A New Field Be Added To An Existing Table.

Can a new field be added to a table that already exists.Thanks in advance.

Do I Have To Reinitialize Snapshot If A New Table Added?

Hello,



After creating a publication for Merge Replication, if I need to add or drop a simple table, do I have to reinitialize the snapshot all over again?



Thanks

Ekrem Önsoy

New Table Added To P-t-p Transactional Publication Does Not Replicate - Why?

Hello,

We are new to replication and are testing it in our development environment. We have a peer-to-peer transactional publication on our three servers. The single table in the original publication replicated fine to the two subscribing servers. We next added a new table (article) to the publication. Adding it to the original publication worked fine but the table did not replicate to the other servers. (We previously had changed the schema of the original table and the schema changes replicated properly.) We attempted to recreate the snapsnot using the "View Snapshot Agent Status" option. Clicking the Start button resulted in the display of this message: "[0%] A snapshot was not generated because no subscriptions needed initialization."

This seems odd because a new table was added to the publication and Microsoft help states that the snapshot must be rebuilt. I have read other topics that refer to a @immediate_sync property that must be set to zero. I'm not sure if this is our problem or even how to set this value. Meanwhile, the other servers, as viewed through the Replication Monitor, are complaining that their snapshots do not match the publication snapshot.

Can someone point me in the right direction?

Thanks,

BCB

SQL 2012 :: Change Properties Of A Table Which Have Filestream When Column Added To It

I store files in db in sql server 2008 by filestream. But when a column would be added to table which have filestream, properties of table would be changed. by every things change on table, retrieve files will faced to error. but store process work probably.

and filestream filegroup at following address will be empty. why?

Right click on table --> properties --> storage --> filestream filegroup

SQL Server 2008 :: Alter Table Triggers Recreate Table?

which ALTER TABLE/ALTER COLUMN- Statement has a Recreate Table as result ?

DB Engine :: Double Row Added From A Source Table That Did Not Have Double Record

Every night we connect to a remote server using Linked Server and copy details from that database to a loading table, then load it into the 'real' table in our own environment. The remove database we load it from has indexes/primary keys that match the 'real', however the 'loading' table itself does not have any indexes or primary keys, both are SQL Server 2005 machines.

In the loading table we first of all truncate it then do a select insert statement from the remote server, then we then truncate the 'real' table and load iit from the 'loading' table.

The issue is when we attempted to load it into our 'real' table from our loading table there was a duplicate row, and our process failed with a Primary Key violation.

I checked the source with does have the same primary key's in, it did not contain a duplicate row and I checked the loading table and that did contain a duplicate row.

My question this is in what circumstances this could happen ?

Problems With Table Triggers

My current situation is I have an application currently using windows authentication developed mostly in classic asp with a few .net 1.x files mixed in. The sql database uses hundreds of triggers to track user actions in nearly 40 tables:- table trigger recognizes that an update/insert is occurring, calls a user function that returns the user id (by using system_user), and along with the update/insert the user id and current date time are saved to the record.This is fine under windows authentication, but we're planning on integrating this application with several others under the same domain using forms authentication.  My connection string for forms has everyone connecting to the database using a single login.  Permissions, otherwise, are handled at the page level.  I obviously have no plans of storing the password in some form of session variable.  Consequently, under forms authentication, the database will be recognize everyone as the same person. Maybe I'm just missing the obvious solution, so what are your thoughts on a solution for this?

System Table Triggers???

I would like to put an insert trigger on sysdatabases. Is this possible?

Thanks!

Plz Help About Use Triggers To Update Other Table

Plz help

I try to use trigger to see if Component table update at same time update the AssemblySubcomponent
AssemblyID

but it say

Msg 4104, Level 16, State 1, Procedure trigupdateSubcomponentID, Line 6
The multi-part identifier "a.SubcomponentID" could not be bound.



the code look like

create trigger trigupdateAssemblyID on Component
for update, insert
as
begin
if update (ComponentID)
update AssemblySubcomponent set a.AssemblyID= i.ComponentD
from inserted i
join AssemblySubcomponent a on a.AssemblyID =i.ComponentID

end

Triggers - Insert Data To Another Table

How do I set up an insert trigger to copy all of the inserted data to another table? In other words, when someone adds a new paramater in the params table, I want to automatically create a matching set of data in the goals table. Thanks,Krista

Table With Triggers Or Maybe A Check Constraint

I have a question about a table with triggers or maybe a check constraint.I have the following create tables:

create table bid(
seller char(10) not null,
item_nummer numeric(3) not null,
)

create table Item(
startprice char(5) not null,
description char(22) not null,
start_date char(10) not null,
end_date char(10) not null,
seller char(10) not null,
item_nummer numeric(3) not null,
)

What i'm trying to make is this trigger/constraint: colomn "seller" from table Item will get NULL as long as systemdate is > start_date and end_date, then it will get the value from seller from table bid on the same item_nummer in both table).

How To Update Joined Table Using Instead Of Triggers

Hi
i have a view that contain multiple tables from my database and i want to view it on datagridview and update it's data
some people says you can update joined tables using instead of triggers
how is that ?is there any example ?

thanks in advance.

Total Amount Of Triggers Per Table

Hi

Just a quick question taht I hope someone can answer, What it the total amount of trigger per table?

I understand that it is better to have as least as possible for performance

Thanks Rich

Import Data To Table With Foreign Key Triggers

I've imported data from an Excel spreadsheet to a table that has fields to match the destination table I'm trying to populate. The destination table has an Insert trigger with several checks on certain fields to make sure they have corresponding records in other tables.

If I do a statement like
"INSERT INTO destinationTable
(
ItemId,
Product,
SuperID,
etc etc
)
SELECT * FROM oldtable"
it runs for a while then gives me error messages from the trigger and rolls back the Insert.

The trigger has code such as
"IF (SELECT COUNT(*) FROM inserted WHERE ((inserted.Product Is Not Null))) != (SELECT COUNT(*) FROM tblInProduct, inserted WHERE (tblInProduct.Product = inserted.Product))
BEGIN
(Error message code goes here)
END"

So, do I need to do an INNER JOIN to each of the related files?
When I try that, I get this error:
"Msg 121, Level 15, State 1, Line 2
The select list for the INSERT statement contains more items than the insert list. The number of SELECT values must match the number of INSERT columns."
Is SQL counting the foreign key fields as separate fields, or what?

Using Triggers To Track Changes In A Single Audit Table

Hi,

I am looking to track any changes made to any table within a db into a single audit table which will hold as fields: the table that has been updated/inserted, the field that was changed, its primary key, the old value and the new value specific to that field, and the date it was updated/inserted.

From what I have read, it does not look like this is possible with a trigger on table as it is not row specific and that I might have to control this from the business layer (vb.net). I am correct in this assumption, or is there a way of tracking specific data changes through triggers.

thanks

Welly

Duplicate Tables Insert/Update In Another Table? Triggers?

I want to be able to duplicate every single record that is inserted or updated in a particular table to another table, but not the delete. Is the best way to set-up a trigger? If so can anyone provide me with an example of how to do this? Also could you just duplicate certain columns in the row I would you have to do all columns?

Thanks for help.

DB Engine :: Table Triggers On Read-only Secondary Replica?

I was hoping for some information regarding table triggers. We have databases that are part of an AlwaysOn availability group on SQL Server 2012. Some of the tables have table triggers defined. There are both types of triggers, INSTEAD OF and AFTER INSERT, etc.

From my understanding of how secondary read-only replicas work, I am assuming that these triggers have no impact at all when the database is a read-only secondary replica and they only fire when the database is the primary read-write database.

However, after doing a search on the internet, I have not been able to find a definitive source of information.

Database Triggers - SQL Server - Fields Only Allowed If Listed In Another Field In Another Table

I would like to ensure data integrity in a column (actually multiple columns will need a trigger) in my table(s) by setting up a trigger which allows an update of my database field only if the value which is being written to the field in the database exists in another column (in another "check" table).eg. I only want values "Yes", "No" or "" in many of my fields, which I store in a column named "YesNoBlank" in another table.Does anyone know the easy way to do this? / Syntax for the trigger?

Fastest Way To Delete Hundreds Of Table Triggers And Hundreds Of Stored Procedures?

How can i delete all user stored procedures and all table triggers very fastina single database?Thank you

Is There A Way To Find The Last Procedure Execution Time If Procedure Updates The Existing Table And There Is No Flags/triggers?

No Record Added On My DB

Hi! could you please check my code on adding record on my DB.. Im using SQL Server included on VWD.Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click        Dim con As String = "Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Request.mdf;Integrated Security=True;User            Instance=True"        Dim sqlcon As New Data.SqlClient.SqlConnection(con)        Dim sqlcmd As New Data.SqlClient.SqlCommand("Insert into uRequest (eticket, ename, edept, edetails, ejobpend, edate) values (@eticket,@ename,@edept,@edetails,@jobpend,@edate)")        sqlcon.Open()        sqlcmd.Parameters.Add("@eticket", Data.SqlDbType.Char, 10).Value = "11-0010-06"        sqlcmd.Parameters.Add("@ename", Data.SqlDbType.Char, 100).Value = User.Identity.Name        sqlcmd.Parameters.Add("@edept", Data.SqlDbType.Char, 50).Value = DropDownList1.Text        sqlcmd.Parameters.Add("@edate", Data.SqlDbType.DateTime).Value = Date.Now        sqlcmd.Parameters.Add("@edetails", Data.SqlDbType.Text).Value = TextBox1.Text        sqlcmd.Parameters.Add("@ejobpend", Data.SqlDbType.Text).Value = TextBox2.Text        sqlcon.Close()    End Sub  I've check the Data on my DB but nothing has been added. nwy, how can u create a confirmation message if the record has been successfully added.Thanks and sorry for the trouble. 

How To Get The Last Item Added

Not 100% sure how to do this so I would appreciate some directions. I have 2 tables, Systems and Contacts. A system can have 1 to infinite contacts and contact can have 1 to infinite systems. So I use a 3rd table Sys_Con to add the contact needed for each system.
Now my question is once I add the System and contact how do I know for sure which ContactID to add in my Sys_Con table? Because while I am doing this operation maybe someone can add an other contact. So is there a way for my store proc Add_Contact to return the contactID needed for my store proc Add_Sys_Con ?

TABLE Sys_Con
SystemID int
ContactID int

Table Contact
ContactID int Identity
ContactName
...

Table System
SystemID
...

Delete Last Added Row -how To

hi i have a question how can i delete last added row. I have 2 tables .source and destination . I take a 1 row from source table , do someoperation on it and save to destination table . after succesfull written Iwant to delete added row from source table.. i'm using a coursors. the mainproblem is : is there any function to check which row was last added. Now Iam doing it using select * from destionation where (and necessaryconditions). but if destination table will be 100000000 rows for example ittakes too much time... Is there another possibility to do it ???please helpMarcin Wolkuwolku

Can't See Added Columns In ASPNETDB.mdf

In developing a VWDE project I added 2 columns to the User table in the ASPNETDB.mdf database.  I can see the columns in the Data Definition and I can see the values I added when I Show Table Data but I cannot access them with a SQLDataSource control?   The SQLDataSource shows all of the columns in that table except the ones I added.  Any suggestions? Thanks.

Retrieve The ID Of The Record Just Added

I would like to retreive the identity field value of a record that was just added to the table.

In other words, I have a form and on submission, if it is a new record, I would like to know the identity value that the SQL Server has assigned it.

This may be overkill, but here is my code to process the form:

Protected Sub processForm(ByVal thisID As String, ByVal myAction As String)
Dim sqlConn As New SqlConnection(ConfigurationSettings.AppSettings("connectionString"))
sqlConn.Open()
Dim sql As String
Select Case myAction
Case "save"
If thisID > 0 Then
sql = "update INCIDENT set " & _
"RegionID = @RegionID, " & _
"DistrictID = @DistrictID, " & _
"DateReported = @DateReported, " & _
..CODE...
"WHERE IncidentID = " & myIncidentID
Else
sql = "insert into INCIDENT(" & _
"RegionID, " & _
"DistrictID, " & _
"DateReported, " & _
...CODE...
") " & _
"values(" & _
"@RegionID, " & _
"@DistrictID, " & _
"@DateReported, " & _
...CODE...
")"
End If
Case "delete"
sql = "delete from INCIDENT where IncidentID = " & myIncidentID
Case Else
End Select

Dim sqlComm As New SqlCommand(sql, sqlConn)
sqlComm.Parameters.Add(New SqlParameter("@RegionID", SqlDbType.NVarChar))
sqlComm.Parameters.Add(New SqlParameter("@DistrictID", SqlDbType.NVarChar))
sqlComm.Parameters.Add(New SqlParameter("@DateReported", SqlDbType.NVarChar))
...CODE...

sqlComm.Parameters.Item("@RegionID").Value = ddRegionID.SelectedValue
sqlComm.Parameters.Item("@DistrictID").Value = ddDistrictID.SelectedValue
sqlComm.Parameters.Item("@DateReported").Value = db.handleDate(txtDateReported.SelectedDate)
...CODE...

Dim myError As Int16 = sqlComm.ExecuteNonQuery
'Response.Redirect("incident.aspx?id=" & )
End Sub

The response.redirect at the end of the sub is where I would like to put the identity field value.

Positioning An Added Column...

how do I position a newly added column in the table?
the default is at the very end.

what would I have to add to this code:

ALTER TABLE Vehicles
ADD Model varchar(55)

Thanks

Emailing After A Record Has Been Added

Hi,
Is there a built in capability with sql server 2005 which sends emails to users upon a record insertion.
Thanks