Maybe someone can help clarify this for me.
I'm trying to write a before insert trigger on opportunity to set closedate if it's left blank. Is this possible?
There's not much code to show. All i did was create a simple before insert trigger with a debug statement to make sure my trigger was executing before the validation rule. It appears that the validation rule is first (and i apparently can't alter it). The trigger never fires.
Should this be working or is it impossible?
Validation Rule should run after before trigger. Please refer to the Triggers and Order of Execution (Step 3 & 4).
If you could paste your code here, I could look deeper into it.
You need to deactivate the validation rule.
Have a look at the Execution order:
https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_triggers_order_of_execution.htm
So basically if you want to use a trigger to check you empty dates:
To auto populate the value -> before insert trigger
To throw an error when it is empty -> after insert trigger
Related
I want to check when my trigger is turned on and off in SQL Server 2005 database. I have created a trigger which inserts entry into new table whenever there is change in specific column. But I received a complaint from client saying that log is not maintained for all updated records in Log Table.
I feel it may be due to trigger is turned off while updating some records so it may not have been recorded in log table.
So how to see log record of whether trigger is turned on or off?
Thanks in advance.
Not quite clear what you're looking for.
Do you want to be able to check at any given time whether the trigger is on or off? In that case, use this statement:
SELECT is_disabled
FROM sys.triggers
WHERE name = 'your-trigger-name-here'
If you want to track when a given trigger is disabled, you could write a DDL trigger that catches the ALTER_TRIGGER event and makes a note of who and when a given trigger was disabled.
I put this answer for whom may search for this question.
You can use this statement to see more detail and the last modify date and time of trigger.
SELECT *
FROM sys.triggers
WHERE name = 'your-trigger-name-here'
I have a scenario where i need to Implement triggers for Update and Insert DML Operations.
But,I am in a fix whether to implement Update and Insert in one Trigger or
create 2 triggers for Insert and Delete respectively....
Also,please note that in my case I might need to execute multiple insert commands at one go...
Please suggest me for the better option with regards to performance as CODE OPTIMAZATION is a big issue in my project(i mean my client..!!))..
I would suggest to create a single Trigger as to create a separate trigger for the UPDATE and the INSERT would become maintenance problem. There is no such performance issue regarding the code optimization.
For performance optimization point of view you can check something like IF EXISTS.
I'm using transactional replication with updatable subscription.
when I add a trigger for update in one of my tables which is chosen for replication in publisher, I encounter with this error:
Maximum stored procedure, function,trigger,
or view nesting level exceeded(limit 32)
My trigger code is
create trigger Isupdated
on tbl_worker
for update as
update tbl_worker SET
Isup=1
where id= (select id from inserted)
what's wrong?
It looks like you've written a recursive (aka nested) trigger.
Perhaps the trigger is causing an update on the table, causing the trigger to be fired again?
If you post the code, that would help us explain exactly what the issue is.
http://www.sqlmonster.com/Uwe/Forum.aspx/sql-server-programming/4752/Maximum-stored-procedure-function-trigger-or-view
The above link provides a solution to trigger nesting. This can be very helpful when you already have a trigger and then replication adds another one. I like this more than combining the triggers because it doesn't force you to mix code related to functionality and code related to replication.
To sum up the solution:
You can prevent the nested firing from happening by assigning the triggers
an order with sp_settriggerorder and add the following check to the
beginning of the trigger you set to fire first to prevent it being fired by
the other trigger:
CREATE TRIGGER....
IF TRIGGER_NESTLEVEL > 1 RETURN
Pretty general question regarding triggers in SQL server 2005.
In what situations are table triggers fired and what situations aren't they?
Any code examples to demonstrate would be great.
I'm writing a audit based databases and just want to be aware of any situations that might not fire off the triggers that I have set up for update, delete and insert on my tables.
A example of what I mean,
UPDATE MyTable SET name = 'test rows' WHERE id in (1, 2, 3);
The following statement only fires the update trigger once.
When do you want them to fire?
CREATE TRIGGER AFTER ACTION
That runs after the action (insert update delete) being committed. INSTEAD OF fires the trigger in place of the action.
One of the biggest gotchas with triggers is that they fire whenever an action is performed, even if no rows are affected. This is not a bug, and it's something that can burn you pretty quickly if you aren't careful.
Also, with triggers, you'll be using the inserted and deleted tables. Updated rows are listed in both. This throws a lot of folks off, because they aren't used to thinking about an update as a delete then insert.
The MSDN documentation actually has a pretty in-depth discussion about when triggers fire and what effect they have here.
On 2008 you can use built in Change Data Capture
Also There are quite a few situations when triggers do not fire, such as:
· A table is dropped.
· A table is truncated.
· Settings for nested and/or recursive triggers prevent a trigger from firing.
· Data is bulk loaded, bypassing triggers.
The following statement only fires the update trigger once.
Any action type statement only fires the trigger once no matter how many rows are affected, triggers must be written to handle multiple row inserts/updates/deletes.
If your trigger depends on only one row at a time being in the inserted or deleted pseudotables, it will fail. And worse it will not fail with an error, it will simply not affect all the rows you want affected by whatever the trigger does. Do not fix this through a loop or a cursor in a trigger, change to set-based logic. A cursor in a trigger can bring your entire app to a screeching halt while a transaction of 500,000 records processes and locks up the table for hours.
Bulk inserts by pass triggers unless you specify to use them. Be aware of this because if you let them by pass the trigger you will need code to make sure whatever happens in the trigger also happens after the bulk insert. Or you need to call the bulk inserts with the FIRE_TRIGGERS option.
I thought I'd highlight from the link Eric posted a situation in which a trigger would not fire:
Although a TRUNCATE TABLE statement is in effect a DELETE, it cannot activate a trigger because the operation does not log individual row deletions. However, only those with permissions on a table to execute a TRUNCATE TABLE need be concerned about inadvertently circumventing a DELETE trigger with a TRUNCATE TABLE statement.
One of my database fields in a table is getting modified by some piece of code. I just can't figure out where!
So, I was wondering if there's a way I can find out.
I'm using SQL 2008. Can Profiler be used to find out if a particular field is getting updated? How?
What about a Trigger? If using a trigger (eg. on UPDATE) can you determine what code called it? How can the trigger 'notify me' of this? Email/file?
Yes, an "AFTER UPDATE" trigger on that particular table and field might give you some clues as to when and why the field gets changed.
From Books Online:
CREATE TRIGGER reminder
ON Person.Address
AFTER UPDATE
AS
IF ( UPDATE (StateProvinceID) OR UPDATE (PostalCode) )
BEGIN
RAISERROR (50009, 16, 10)
END;
GO
A trigger can execute basically any T-SQL code - if you have database mail set up correctly, it could send you an e-mail, yes. Or it can write an audit entry into another table or something like that.
EDIT: If you need to find out which statements updated your column, you might be actually better off running a trace on the server, limited to that specific table, and just trace what's happening there. I don't think a trigger can give you that information (which code caused the update to happen).
Marc
Determining the last Update to or Select against a table (without a trigger!)
http://sqlblogcasts.com/blogs/tonyrogerson/archive/2007/06/03/determining-the-last-update-to-or-select-against-a-table-without-a-trigger.aspx
Yes, you can use a trigger to execute some code (keep track of who updated the table, email you, etc.) when a table is updated. See this link: Track Updates with a Database Trigger
edit: originally posted the wrong link