Need Assistance On Conditional Update Trigger
Jul 3, 2006
I need some help here in creating a conditional update trigger. The purpose of this trigger would check to see if a contact already exist in the database on an insert and update only the fields that are null.
So How would I compare each field from the CONTACTS Table against my INSERTED Table?
Inserted.FirstName (COMPARE) Contacts.Firstname
Inserted.LastName (COMPARE) Contacts.LastName
Inserted.Email (COMPARE) Contacts.Email
I will be using the email address as the check for the duplicate record and if a duplicate is found... Instead of not allowing the insert I want to compare the existing record and update any fields that are NULL in Contacts with Inserted.
I have no idea on how to compare all of the fields.
Any help appreciated.
sadler_david@yahoo.com
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Dec 20, 2004
Hi:
In a very busy SQL2000 enterprise edition server with 8GB memory and 6 cpus sp3, I could not install a update trigger, unless all the appl connections are dropped. For this 24 HR running svr, could do it.
then I try to run a query as follows:
if exists (select rfABC.* A
from rfABC inner join remoteSvr.XYZDB.dbo.vwIP L
on A.Address = L.address and
A.metro <> L.metro
begin
print ' ---- Yes metroID <> LAMetro, start job exec.... -----'
insert into tempCatchMetroIDGPRS
select rfABC.*, metro, getdate()
from rfABC inner join remoteSvr.XYZDB.dbo.vwIP L on rfABC.Address = L.address and rfABC.metro <> L.metro
update rfABC A
set A.metro = L.metro
from rfABC A inner join remoteSvr.XYZDB.dbo.vwIP L on A.Address = L.address and A.metro <> L.metro
end
else
begin
print ' ---- no metroID <> LAMetro, skip job exec.... -----'
end
------------------------------
this query hang there could not execute. When I took off the if ... else condition, it run with like 0 second. Wondered if a 'busy' (which updates the IP address continueously) could cause above issues...
thanks
David
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Jun 27, 2006
i need to use a conditional split transformation to find missing column and direct the output of conditional split to my destination.
I have the following columns PatientId, Allergycode, SeverityCode
My requirement is to check whether value of a particular column is null or not null.
Please help.
Ronald
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Mar 2, 2004
Hi,
Hopefully this will be painless for you guys/gals - however due to my lack of skills/knowledge I need some clarification.
I have table_X which I have a trigger on INSERT setup.
This trigger updates Field_2 = '1' and inserts some rows in another table.
Is there some way that I can restrict this trigger to only run when Field_1 = "BLAH"
So essentially I am trying to find out how I can pull information/data from the record that fired the trigger and use this in the trigger? (ie to check if Field_1 = "BLAH" and to use Field_3 to further restrict the underlying triggers' updates and inserts)
Hopefully I have given enough information on this one - if not please let me know any points that I should need to clarify.
Thanks in advance for your help!!!
Cheers
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Jul 23, 2005
I have a trigger that I created to log changes in one table to anothertable but it is horribly inefficient.I am hoping that someone with more experience than I can see a way tomake this trigger more efficient.------------ALTER TRIGGER tContacts_ChangeLogON dbo.ContactsFOR UPDATEASSET NOCOUNT ONDECLARE @tablename varchar(20),@record_id_column varchar(30),@colname varchar(30),@colvalue varchar(8000),@insertstmt varchar(1500),@username varchar(20)SELECT @tablename = 'Contacts'SELECT @record_id_column = 'ContactID'DECLARE columns_cursor CURSOR LOCAL FORSELECT COLUMN_NAMEFROMINFORMATION_SCHEMA.COLUMNSWHERETABLE_NAME = @tablenameAND (POWER(2, (ORDINAL_POSITION-1) % 8) & CONVERT(INT,SUBSTRING(COLUMNS_UPDATED(), (ORDINAL_POSITION-1)/8 + 1, 1))) <> 0SELECT * INTO #del FROM deletedSELECT * INTO #ins FROM insertedSELECT @username = RIGHT(SYSTEM_USER, LEN(SYSTEM_USER) -CHARINDEX('',SYSTEM_USER))OPEN columns_cursorFETCH NEXT FROM columns_cursor INTO @colnameWHILE @@FETCH_STATUS = 0BEGINSELECT @insertstmt = 'INSERT INTO ' + @tablename + '_ChangeLog (recordid, fieldname, changedfrom, changedto, username, datetime ) ' +'SELECT d.' + @record_id_column + ', ''' + @colname + ''', d.' +@colname + ', i.' + @colname + ', ''' + @username + ''', GETDATE()' +'FROM #del d INNER JOIN #ins i ON d.' + @record_id_column + ' = i.' +@record_id_column + ' WHERE (i.' + @colname + ' <> d.' + @colname + ')'+' OR (i.' + @colname + ' IS NOT NULL AND ' + 'd.' + @colname + ' ISNULL) OR (i.' + @colname + ' IS NULL AND ' + 'd.' + @colname + ' IS NOTNULL)'-- INSERT INTO Debug (value) VALUES( @insertstmt )EXEC( @insertstmt )FETCH NEXT FROM columns_cursor INTO @colnameENDCLOSE columns_cursorDEALLOCATE columns_cursor
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Jun 5, 2006
Our company is wanting to replicate a bunch of data down from our central server to tablet PC's. We really do not have anyone on staff with solid experience in replication, and have hit an error that we cannot seem to find any information whatsoever on.
Here is the problem:
When setting up a publication to replicate certain tables, we stop being able to do any updates on the tables. After some research, we were able to narrow the problem into the msrepl triggers the publication places on the table. In the update trigger of the table, the following line is being placed by SQL Server:
execute sp_mapdown_bitmap 0x0000000040, @bm output
The sp_mapdown_bitmap call, passes through to a xp_mapdown_bitmap call (limited documentation I have found is it is suppose to be an extended stored procedure), which if I try to manually execute, does not exist on the server (Logged in as SA the entire time).
Commenting out that line in the replication stored procedures corrects the problem. However obviously we do not want to manually do that everytime we create a publication, and we have no idea what negative impacts may occur because of it.
We are getting this behavior on several SQL Server 2005's...
Additional notes on the environment:
-CLR Triggers written in VB, on most tables performing application functions
-SQL Server 2005 SP1 is on the servers, and SQL Server 2005 Express Edition is on the tablets.
-Again this problem only exists on some tables in the database.
Any assistance would be greatly appreciated.
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Mar 7, 2007
I'm attempting to write and update query. So far I have written the following:
update vwDISTCITY_TAXCODE
set tax_code='04'
where DIST_CITY='04'AND year_id=2007 AND frozen_id=0 AND p_id=93549 AND total_taxes=isnull
The last part of the query "total_taxes=isnull" is where the problem lies. Essentially I want to say if all of the other things are true and there is a null value in the total_taxes column, then I I want to set the tax_code to '04'. However how would I phrase the last part correctly?
Thanks!
-Steve H.
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May 22, 2008
Hello,
I am trying to update a table based on values that I have imported into a temporary table. Basically I have a list of lab codes (EMR_temp_labtest_configupdate) and each lab has a zseg code tied to it. The definitions for zseg code are in a separate table called (EMR_zseg_code_descriptions)
I need to update the lab_test_add_conf to add in each lab code that does not have any configuration information (not exists in lab_test_add_conf) based on the zsegcode.
For example a zsegcode (defined in the emr_zseg_code_descriptions table) is ZBL and the lab code 003277 fits into the zseg category according to the temp table. For each lab code that first into the ZBL category a row needs to be inserted for
Example of table data:
emr_temp_labtest_config
labtestcode, zsegcode
003277, ZBL
emr_zseg_code_descriptions
zsegcode, valuecode
ZBL, PATRAC
ZBL, HERITG
I want to look at the data in the temp table and determine which category it is in and then insert into the lab_test_add_conf table a row for each lab test each zseg table value code that exists.
My Final Goal:
lab_test_add_conf:
lab test code, valuecode
003277, PATRAC
003277, HERITG
I know I need to do an update statement but I am not sure how to set up the SET statement or if there is anythign that I need to take into consideration. Here is my code so far.....any thoughts?
select a.labtestcode
from EMR_temp_labtest_configupdate a
Where Not Exists
(Select *
From lab_test_add_conf b
where a.labtestcode = b.labtest_key)
update table lab_test_add_conf
select a.labtestcode,b.zsegcode,b.valuecode,b.valuedesc,b.valuetype,b.units,
b.tablename,b.fieldname
from EMR_temp_labtest_configupdate a
join emr_zseg_code_descriptions b on a.zsegcode = b.zsegcode
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Jul 17, 2006
I have a trigger that updates values in a table when col2 is updated by a stored procedure.
I'd like to make this a conditonal trigger to prevent negative values from being inserted in the table. I'm not familiar with the syntax of triggers enough to get this to work and I've search for a reference with no luck.
Here's the current trigger code:
Code:
FOR INSERT, UPDATE
AS
UPDATE table1
SET col4= col1 - col2 - col3
I need to evaulate (col1 - col2 - col3) to see if it's less than zero. If it is, I want to set col4=0.
This is what I've tried, but it doesn't work. Any help is appreciated:
Code:
FOR INSERT, UPDATE
AS
select col1, col2, col3 from table1
if (col1 - col2 - col3) < 0
UPDATE table1
SET col4 = 0
else
UPDATE table1
SET col4= col1 - col2 - col3
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Feb 22, 2008
Hello,
I have a situation where I'd like to fire a trigger only when certain conditions are met for data that's inserted into it's parent table.
Here is what I'm working with -
The PropertyScenarioIndex table currently contains this data:
PropertyID ScenarioType ScenarioID
1732 financing 1
1732 financing 2
1732 financing 3
1732 income_expense 1
1732 income_expense 2
The PropertyScenarioIndex table has a trigger on it (the one that needs to be made conditional) whose purpose is to automatically insert rows into another table called IncomeAndExpenseData to make entries easier for the user in that table. Here is the trigger:
Code Snippet
CREATE TRIGGER addstandardIncomeAndExpenserows ON PropertyScenarioIndex
AFTER INSERT
AS
insert into IncomeAndExpenseData
select
properytID = t1.propertyID,
scenarioID = t1.scenarioID,
itemID = t2.itemID,
itemvalue = null,
monthitemvalue = null
from PropertyScenarioIndex t1
cross join IncomeAndExpenseCodes t2
where
t1.propertyID+t1.scenarioID in (select propertyID+scenarioID from Inserted)
and t2.standarditem = 1
With the trigger as it is above, when the user tries to enter the following into PropertyScenarioIndex:
PropertyID ScenarioType ScenarioID
1732 income_expense 3
an error message appears that says Violation of PRIMARY KEY constraint 'PK_IncomeExpenseData'. Cannot insert duplicate key in object 'IncomeExpenseData'.
Is there some way to include code in the trigger that makes it fire only when the data inserted into the PropertyScenarioIndex table has a ScenarioType of 'income_expense'?
Note: in the where statement of the trigger above I have also tried this:
Code Snippet
where
t1.propertyID+t1.scenarioID in (select propertyID+scenarioID from Inserted where scenariotype = 'income_expense')but got the same error message as noted above.
Thanks, Knot
P.S. The primary keys in the PropertyScenarioIndex table are PropertyID, ScenarioType, ScenarioID and the primary keys in the IncomeExpenseData table are called PropertyID, ScenarioID, ItemID.
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Feb 15, 2005
On the database that I am maintaining we are having some data integrity issues between our Logon table and another sub table that stores the LogonId.
The best solution would be to put in a foreign key, but that is going to require a lot of work and a lot of code changes for the entire system. This is what we plan to do, but this is not a quick fix. We need something that can be implemented quickly.
The easiest and quickest fix is to check this sub table to see if the LogonId is in the sub table and the row is marked as Active or Working. If it is then we will abort the deletion and raise an error. Otherwise the delete should happen normally.
Is aborting the deletion as simple as :
<code>
Delete From deleted
Where LogonId = @myId
</code>
Or am I missing something?
Thanks for the help,
Tim
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Feb 27, 2004
I have a pretty massive conditional trigger. If there is another way of going about this, please let me know. But I'm populating a temp table with records and based on many conditions, I am transforming this data to another table in a corrected format. These conditions I am using reference the final table in many ways, and this seems to become slower and slower as the final table grows larger.
Take a look and see if you can help me please.
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Mar 14, 2006
Is there any way to create a "Conditional Insert Trigger"
My Scenario is this;
When a user adds an email address to the database, I want to look to see if the email address is like '%@acme-holdings%' and if it is then to change the value to 'Not allowed', otherwise to leave it alone and go ahead with inserting the original email address
TIA
ICW
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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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Feb 21, 2006
Hello all, my update statement works as expected, but lacks some conditional logic. How can I change the statement to not decrement qtyonhand if the quantity is 0? Additionally, I would need to return to the calling application something that would allow me to populate a label with a message to the user.. How can that be accomplished?
Here is my sproc:CREATE PROCEDURE [webuser].[cssp_removeItem]
@lblID int
AS
Update cstb_inventoryset qtyonhand = qtyonhand -1where Id = @lblIDGO
Here is my app code:
Try
Dim cmd As SqlCommand = cn.CreateCommand
cmd = New SqlCommand("cssp_removeItem", cn)
cmd.CommandType = CommandType.StoredProcedure
With cmd
cmd.Parameters.Add("@lblId", SqlDbType.Int).Value = lblId.Text
End With
If Not cn.State = ConnectionState.Open Then
cn.Open()
End If
cmd.ExecuteNonQuery()
Catch ex As Exception
Response.Write(ex.ToString)
Finally
If Not cn.State = ConnectionState.Closed Then
cn.Close()
cn = Nothing
End If
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Oct 13, 2006
I have a Variable called - UpdateIDs.
I would like to create a conditional split on id's that have no responses and id's that have responses.
The idea is. There is a whole bunch of tables that can be updated if the foreign key is in the no responses id's.
So I have created a data flow. The conditional split is there, but I do not have a "Update Global Variable" Destination source.
Is there away to achieve this.
Basically this is the logic that I am trying to use
Dataflow --> Store Id's into Global Variable --> Data Flow update/insert Tables and Rows where Id in Gloabl Variable.
Is there another way this can be done?
Sorry I am very new to this, and would appreciate any help
Thanks
Andrew
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Aug 11, 2015
I have a table with the following fields:
ID (int, identity)
Name (nvarchar(255))
Block (nvarchar(50))
Street (nvarchar(255))
Floor (nvarchar(50))
Unit (nvarchar(50))
Address1 (nvarchar(255))
Address2 (nvarchar(255))
I want to iterate through the table and populate Address1 as [Block] [Street] #[Floor]-[Unit].If the 'Floor' field contain a number < 10 (e.g., '8'), I want to add a '0' before it (e.g., '08'). Same for Unit.How would I do this using cursors (or other recommended method)?
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Sep 9, 2015
Conditional Update of a field from multiple tables..I have a target table with two fields: Date and ID..There three source tables: S1, S2, S3, each of them has three fields: Date, ID, and Score...Now I want to update the target table: put the ID into the ID field which has the highest Score from the three tables on each day.
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Jan 3, 2005
hi!
I have a big problem. If anyone can help.
I want to retrieve the last update time of database. Whenever any update or delete or insert happend to my database i want to store and retrieve that time.
I know one way is that i have to make a table that will store the datetime field and system trigger / trigger that can update this field record whenever any update insert or deletion occur in database.
But i don't know exactly how to do the coding for this?
Is there any other way to do this?
can DBCC help to retrieve this info?
Please advise me how to do this.
Thanks in advance.
Vaibhav
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Jul 8, 2015
I have a table where table row gets updated multiple times(each column will be filled) based on telephone call in data.
Initially, I have implemented after insert trigger on ROW level thinking that the whole row is inserted into table will all column values at a time. But the issue is all columns are values are not filled at once, but observed that while telephone call in data, there are multiple updates to the row (i.e multiple updates in the sense - column data in row is updated step by step),
I thought to implement after update trigger , but when it comes to the performance will be decreased for each and every hit while row update.
I need to implement after update trigger that should be fired on column level instead of Row level to improve the performance?
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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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Feb 15, 2008
Hello
I've to write an trigger for the following action
When a entry is done in the table Adoscat79 having in the index field Statut_tiers the valeur 1 and a date in data_cloture for a customer xyz
all the entries in the same table where the no_tiers is the same as the one entered (many entriers) should have those both field updated
statut_tiers to 1
and date_cloture to the same date as entered
the same action has to be done when an update is done and the valeur is set to 1 for the statut_tiers and a date entered in the field date_clture
thank you for your help
I've never done a trigger before
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Aug 28, 2007
Hi
I am using conditional split Checking to see if a record exists and if so update else insert. But this cause database dead lock any one has suggestion?
Thanks
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Dec 17, 2001
I have an update trigger which fires from a transactiion table to update a parent record in another table. I am getting no errors, but also no update. Any help appreciated (see script below)
create trigger tr_cmsUpdt_meds on dbo.medisp for UPDATE as
if update(pstat)
begin
update med
set REC_FLAG = 2
from deleted dt
where med.uniq_id = dt.uniq_id
and dt.pstat = 2
and dt.spec_flag = 'kop'
end
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May 30, 2008
I am trying to update a fields with an UPDATE statement but I keep getting the error message when I run the query.
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
I have this Update trigger that I know is causing the error message because I guess it's not built to manage multi-row updates.
Can someone help me re-write it. I also tried using the WHERE p.ID = p.ID but when I do that it modifies all rows in the modifieddate column instead of just the cells/rows that I'm updating
ALTER TRIGGER [dbo].[MultitrigCA]
ON [dbo].[ProdDesc]
AFTER UPDATE
AS
SET NOCOUNT ON
IF UPDATE (codeabbreviation)
UPDATE p
sET p.ModifiedDate = GETDATE()
FROM ProdDesc AS p
WHERE p.ID = (SELECT ID FROM inserted)
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Jul 20, 2005
Hi there,I'm a little stuck and would like some helpI need to create an update trigger which will run an update query onanother table.However, What I need to do is update the other table with the changedrecord value from the table which has the trigger.Can someone please show me how this is done please??I can write both queries, but am unsure as to how to get the value ofthe changed record for use in my trigger???Please helpM3ckon*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
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Apr 3, 2008
hi!
i have a database with about 20 tables. i appended to each table a column "UpdatedOn", and i want to write a trigger to set the date of the update date in that column, using a trigger.
i want to avoid the trigger launching for the last column (UpdatedOn).
how can i detect the rows that changed, and modify only the update date/time?
i read something about TableName_Inserted and TableName_Deleted, but i would prefer to copy as generic as possible the data from there, meaning, not to write column names in my script.
another idea i thought about was to prevent the trigger executing if no other column except for UpdatedOn changed, but... i encounter some trouble, when i try to pass column name (as string) to UPDATE() function.(Error: Expecting ID or QUOTED_ID)
thank you in advance.
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Mar 7, 2008
Hello everyone,
Is there a way in order to execute a subscribed report based on a certain criteria?
For example, let's say send a report to users when data exist on the report else if no data is returned by the query
executed by the report then it will not send the report to users.
My current situation here is that users tend to say that this should not happen, since no pertinent information is contained in the report, why would they receive email with blank data in it.
Any help or suggestions will be much appreciated.
Thanks,
Larry
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Apr 6, 2004
Hello All,
I've been adviced without much detail that the best way to handle updates is with an Update Trigger to write to an AuditTable.
I always thought it was better to avoid triggers.
I'm getting confused very fast in reading about triggers.
Could someone please point me in the right direction?
Thank you,
Tina
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Dec 2, 2004
i am using address table to store the address of employees, agents, students; so can't use cascade update and delete. so i decided to use trigger but i got stuck here as well.
Here employeeid is the PK of employee id. so when it is updated, i want to update that id in corresponding address table as well.
so what i need is to find out the previous value of EmployeeID before updating to use in WHERE clause and new EmployeeID to use in SET clause.
<code>
CREATE TRIGGER [AddressUpdate] ON [dbo].[MCS_Employee]
FOR UPDATE
AS
IF UPDATE(EmployeeID)
BEGIN
UPDATE MCS_Address SET EmployeeID = 'i am stuck here; how to know the previous value?
WHERE EmployeeID = ???
END
</end>
ironically, PK in my table can be updateable as well.
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Sep 1, 2005
Hello all. I have a table which is the exact replication of a different table. Now if an update takes place in the original table I want to copy that row into the new table without the update.I have this but I am not sure if it works.Create Trigger Content_Archive on content
For Update
As
Insert Into content_audit Select * From DeletedI dont know if Updated exists so I am using Deleted. It is returning both rows (before and after update). And the insert should take place as soon as an update takes place in any field in the content table.
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Feb 21, 2001
Hello, I have two tables, looks as follow.
TOPIC
------
TOPIC_ID
STATUS_ID
TOPIC
THREAD
-------
THREAD_ID
TOPIC_ID
STATUS_ID
THREAD
THREAD_DATE
NAME
I want to update STATUS_ID in TOPIC when I post a new THREAD.
I guess the best would be to use a trigger?
Don't know much how you write them so if someone please could help or point me in right direction.
My plan is to always show the updated STATUS_ID in TOPIC while I have history in the THREAD TBL.
I am using MS SQL 7.0
Thanks for a great site.
Linkan
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Feb 22, 2001
Hello,
I am new to this and on my way to learning. I hope someone can help me with a trigger. I want to update status of one table when I insert a new threat in another. This is what I have come up with so far.
CREATE TRIGGER [trg_Update_Status] ON tForumThread
FOR INSERT
AS
BEGIN
UPDATE tJournalTopic (STATUS_ID)
SELECT STATUS_ID
FROM Inserted
Thanks,
Linkan
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