Update Values From Inserted Or Updated In Triggers
Mar 6, 2008
Hi all. I have this problem:
on insert in a new table a have to change one column before insert.
I wrote this trigger:
create trigger SUBSCR_ID_TRANSFER ON dbo.SalesOrderExtensionBase AFTER INSERTAS BEGIN SET NOCOUNT ON;DECLARE @OpportunityID uniqueidentifier;DECLARE @subscrId uniqueidentifier;declare @salesorderid uniqueidentifier;set @salesorderid = (select SalesorderID from inserted)SET @OpportunityID = (SELECT OpportunityId FROM SalesOrderBase where SalesOrderID=@salesorderid)SET @subscrId = (SELECT New_old_subscridId from OpportunityExtensionbase where OpportunityID=@OpportunityID)Update inserted set New_old_subscridId = @subscrIdENDbut SQL Rise the error "The inserted values can not be modified"
Hi SQL fans,I realized that I often encounter the same situation in a relationdatabase context, where I really don't know what to do. Here is anexample, where I have 2 tables as follow:__________________________________________ | PortfolioTitle|| Portfolio |+----------------------------------------++-----------------------------+ | tfolio_id (int)|| folio_id (int) |<<-PK----FK--| tfolio_idfolio (int)|| folio_name (varchar) | | tfolio_idtitle (int)|--FK----PK->>[ Titles]+-----------------------------+ | tfolio_weight(decimal(6,5)) |+-----------------------------------------+Note that I also have a "Titles" tables (hence the tfolio_idtitlelink).My problem is : When I update a portfolio, I must update all theassociated titles in it. That means that titles can be either removedfrom the portfolio (a folio does not support the title anymore), addedto it (a new title is supported by the folio) or simply updated (atitle stays in the portfolio, but has its weight changed)For example, if the portfolio #2 would contain :[ PortfolioTitle ]id | idFolio | idTitre | poids1 2 1 102 2 2 203 2 3 30and I must update the PortfolioTitle based on these values :idFolio | idTitre | poids2 2 202 3 352 4 40then I should1 ) remove the title #1 from the folio by deleting its entry in thePortfolioTitle table2 ) update the title #2 (weight from 30 to 35)3 ) add the title #4 to the folioFor now, the only way I've found to do this is delete all the entriesof the related folio (e.g.: DELETE TitrePortefeuille WHERE idFolio =2), and then insert new values for each entry based on the new givenvalues.Is there a way to better manage this by detecting which value has to beinserted/updated/deleted?And this applies to many situation :(If you need other examples, I can give you.thanks a lot!ibiza
Hi I have an application which get any change from database using sql dependency. When a record is inserted or updated it will fire an event and my application get that event and perform required operation. On the event handler I am usin select ID,Name from my [table]; this will return all record from database. I just want to get the record which is inserted or updated. Can u help me in that. Take care Bye
We have a column syncUpdate in some tables and we need a trigger (or one for each table) which will set the current dateTime for the syncLastUpdate (dateTime) when either the row is inserted or updated (we have to ignore the syncLastUpdate column itself as this would be an infinite loop, I think).
I don't know much about DB but I think that is easly doable.
HI, I am wondering if it is possible to retreive this information without using row count transform. Can I get the # of rows inserted/updated or deleted by destination from the log?
We are getting data feed from Oracle database in our project. Everyday we will need to track if any rows got inserted/updated/deleted in the source and get that update right into our data warehouse.
Currently we are taking a dump of the required table (as it is) to our staging DB and comparing it with previous day data to track the changes (column by column comparison). This approach is working currently but has performance bottleneck. There is no tracking column (eg. last modified date or time) in source that will give us any idea of what got changed. Also there is no identity key or primary key in the source data.
Is there a way in SQL Server to get that inserted/updated records only instead of comparing column by column to track the changes?
Hi, I am trying to create a SSIS package, which will extract data from a SQL server view and populate the data in our local SQL server database tables. My objective is to get the data from the view such that only inserted and updated rows are fetched from the view. Note: the view does not expose any updated date type of column thru which I can check. So I guess I have to compare each and every field with my destination table row's fields.
I would appreciate any suggestions on how to approach the problem. Thanks in advance.
Using VS 2008 Beta 2, SQL CE 3.5, on desktop, and Typed Datasets: The INSERT command of dataset table adapter does not return the updated identity of inserted row. Why?
also every time I want to modify the insert command to return the updated identity of inserted row, i get the error: "Unable to parse query text."
I am run a stored procedure using Execute SQL task in, I want to log information of number of record inserted update in my table. I want to enable SSIS logging after from where I get information number of record inserted update.
I am new to trigger and I have following question.
I have two tables: "Customer" & "AccountDetails". "Customer" stored customer's personal information, so one customer will be at one row. "AccountDetails" stored all the accounts information which tie to each customer, so there will be multiple rows for a customer since one customer can have mulitple accounts.
Right now I have a updated trigger on "AccountDetails" table. When there is an updated to this table, it will insert some data to another "CustLog" table for logging when customer does the updates. Let's say Customer "A" has 5 accounts. When "A" updates his accounts' information, all 5 rows will be updated, triggers will be called 5 times, and 5 insert rows will be added to "CustLog". Is that any way to keep track those 5 updated on "AccountDetails" are referred to the same customer (by customer ID or so) so that it will only run the trigger once instead of 5 times?
I hope I make it clear and please help me on this! :o
I'm trying to build a trigger with next sql statements & variables. Seems like the only way is with an EXEC sp_executesql, but even this trivial example gives "Invalid object name 'inserted'." (the more fully coded trigger can be found at http://slos.com/sql.txt
CREATE TRIGGER [ti_contacts] ON [Contacts] FOR INSERT AS EXEC sp_executesql N'SELECT * from inserted'
I am reading the WROX "Professional SQL Server 7 Programming" book. The following code appears on page 424:
CREATE TRIGGER ProductIsRationed ON Products FOR UPDATE AS IF EXISTS ( SELECT 'True' FROM Inserted i JOIN Deleted d ON i.ProductID = d.ProductID WHERE (d.UnitsInStock - i.UnitsInStock) > d.UnitsInStock / 2 AND d.UnitsInStock - i.UnitsInStock > 0 ) BEGIN RAISERROR('Cannot reduce stock by more than 50%% at once.',16,1) ROLLBACK TRAN END
The trigger fires when an UPDATE is made to Products table. The author states that the Inserted and Deleted tables only exist for the life of the trigger, not before, and not after the trigger runs. If this is true, then why would there be any rows in the Deleted table in this case? No rows were deleted within the trigger. As far as I can see, no rows have been updated either. If the condition does exist, no rows will be updated, and an error will be displayed. Otherwise, the row will be updated. Then there would be a row in the inserted table. But then the trigger is finished and the inserted table for that trigger disappears. I think my logic is flawed, which is why I am writing. I don't think I fully understand the Inserted and Deleted tables.
I want to compare the before and after values of an UPDATEd column using a trigger. I want to know if the value in the column has changed. Simple? No!
As you know, SqlServer puts the before image of the UPDATEd rows into the DELETED virtual table and the after image of the UPDATEd rows in the INSERTED virtual table.
So you would get the before and after data by doing a SELECT on these tables. But here is the problem - how do you join the tables? What if there are >1 rows in these 2 tables (because the UPDATE affected >1 rows) - how do i know which "old"/DELETED rows correspond to which "new"/INSERTED?" Ok - I could join the 2 tables on the primary key, but what if the primary key was updated? In that case the join would not work - the DELETED table would contain the old primary key value and the INSERTED table would contain the new (different) primary key value. In fact, ALL of the columns may have been changed by the UPDATE.
Now, there is another thing to try with triggers - the IF UPDATE ( <columname> ) test. This is designed to tell you if a specified column was UPDATEd by the last UPDATE. However, this will return TRUE for any UPDATE that mentions the column - even if the UPDATE does not change any data! So I cannot determine whether a certain column has had its value changed with this either.
So then you can try another test mentioned in the docs for CREATE TRIGGER - the IF COLUMNS_UPDATED() test. However, this will report that a column has been updated, NOT whether the data has changed as aresult of that UPDATE. So if you UPDATE the value in the column to the same value as it was beforehand (admittedly, a pointless thing to do, but it could happen in some apps), this fuction will say, yes, this column was updated.
So my question remains - how do I know if the data has changed in a column after an UPDATE, using a trigger? Any ideas?
I am trying to change values of two tables in my sql server 2000 database. When one of the tables is modified in some way like adding/updating a record, I need a trigger procedure to copy this new data from the first table to the second. Problem is, how do I get the newly inserted or updated data from the first table? How do I specify that I only want the data which caused the trigger to execute? Anyone know?
I would like to wrap the following code in a function and reuse it. I use this code in many triggers.
DECLARE @Action as char(1); SET @Action = (CASE WHEN EXISTS(SELECT * FROM INSERTED) AND EXISTS(SELECT * FROM DELETED) THEN 'U' -- Set Action to Updated. WHEN EXISTS(SELECT * FROM INSERTED) THEN 'I' -- Set Action to Insert. WHEN EXISTS(SELECT * FROM DELETED) THEN 'D' -- Set Action to Deleted. ELSE NULL -- Skip. It may have been a "failed delete". END)
Is it possible to write a function and pass the INSERTED and DELETED logical tables to it?
i am using sql server 2008 developer edition on in my desktop pc.i created a database in which there's a table that contains a column named "images" with a data type image for storing images in database.And all is working very fine No issue in this.
the problem arise after i copied the .mdf and .ldf files from my desktop to my laptop which also have same sql server 2008 developer edition.
Coming to the main issue "is I am not able to To save ,update images in that table from my laptop.i tried the best of what i could do but unsuccessful. i formatted my entire laptop as i thought of;basically the same thing works flawless in my desktop but not in my laptop.
i have a website that accepts users on it. first the user will apply to make use of my site and the data that he supplied will be put to account table. my problem is how can i get the last inserted identity value lets say id, to create the id of the person applied by simply incrementing it... i dont want to use the built in function of the sql server. can anybody help me of this process. asap...
I see some strange behavior when running a package using the SQL Server Agent. The package I run calls a number of child packages, in which I use property expressions to set - among other things - the path to text files I read into a database.
The property expressions are in the form: @[User::ThePath] + "\TheFile.txt". The variable ThePath is read from an XML configuration file at runtime from the "master" package and passed on to the child packages using a parent package variable configuration.
My problem is this: When the package is executed by the SQL Server Agent, the properties for the path of the text files are not updated, and the package fails, as it cannot locate the files. When using DTExecUI to execute the same package, everything runs fine.
Could it be a permissions issue? I don't think so, as the SQL Server Agent runs under the same account as I am logged in when executing with DTExecUI.
In oracle there is "RETURNING" Clause which stores the values inserted to a variable. Is there any option in sql server. i.e storing and fetching takes place at one shot.
eg: insert into tab (name) values ('hello') returning name into val;
I have a table with constantly changing data - stock.
I want to start monitoring the value of stock at the end of each month. I can do this with a simple query, export the results to Excel and store on the network.
My question is:
Are there better ways to do this with SQL Server?
I thought of a monthly "job" that does the query and outputs to a file. (Need to be able to look at each month separately though for trend monitoring.)
Then wondered, if I should have an extra table to store the data and write queries on that in the future?
I am creating update trigger(After) on a table.I want to catch an updated row and insert the values of this row into a new table.How can i catch this row while creating a trigger after update.
I want to update several columns in different tables whenever an update is happend on specific table. I have a trigger for that which update all the relevant places when it fires.
I want to do this update only if certains columns were changed, otherwise - do anything, to reduce performance.
How Can I know which columns were updated inside the trigger? The tables has many columns and only if 2 of them were changed then I need to update other tables.
I am trying to create a check command that ensures only A'B','c','D','E','F','G and s1, s2 can be inserted in the table, is this even applicable? Heres my code:
When i debug a trigger is it possible to add a WATCHon the INSERTED or DELETED?I think not, at least I couldn't figure out a way to do so.Does someone have a suggestion on how I can see the values?I did try to do something likeINSERT INTO TABLE1(NAME)SELECT NAME FROM INSERTEDbut this didn't work. When the trigger completed and Iwent to see the TABLE1, there were no records in it.Are there any documents, web links that describe waysof debugging the trigger's INSERTED and DELETED?Thank you
I wrote a stored proc to be implemented in a datagrid. I went and used it on a record to update some information and it updated THE WHOLE DATABASE WITH THAT ONE RECORD..
IF anyone could shead some light on what I'm doing wrong that would be great.
Using MS SQL 2000I have a stored procedure that processes an XML file generated from anAudit program. The XML looks somewhat like this:<ComputerScan><scanheader><ScanDate>somedate&time</ScanDate><UniqueID>MAC address</UniqueID></scanheader><computer><ComputerName>RyanPC</ComputerName></computer><scans><scan ID = "1.0" Section= "Basic Overview"><scanattributes><scanattribute ID="1.0.0.0" ParentID=""Name="NetworkDomian">MSHOMe</scanattribute>scanattribute ID = "1.0.0.0.0" ParentID="1.0.0.0", etc etc....This is the Update portion of the sproc....CREATE PROCEDURE csTest.StoredProcedure1 (@doc ntext)ASDECLARE @iTree intDECLARE @assetid intDECLARE @scanid intDECLARE @MAC nvarchar(50)CREATE TABLE #temp (ID nvarchar(50), ParentID nvarchar(50), Namenvarchar(50), scanattribute nvarchar(50))/* SET NOCOUNT ON */EXEC sp_xml_preparedocument @iTree OUTPUT, @docINSERT INTO #tempSELECT * FROM openxml(@iTree,'ComputerScan/scans/scan/scanattributes/scanattribute', 1)WITH(ID nvarchar(50) './@ID',ParentID nvarchar(50) './@ParentID',Name nvarchar(50) './@Name',scanattribute nvarchar(50) '.')SET @MAC = (select UniqueID from openxml(@iTree, 'ComputerScan',1)with(UniqueID nvarchar(30) 'scanheader/UniqueID'))IF EXISTS(select MAC from tblAsset where MAC = @MAC)BEGINUPDATE tblAsset set DatelastScanned = (select ScanDate fromopenxml(@iTree, 'ComputerScan', 1)with(ScanDate smalldatetime'scanheader/ScanDate')),LastModified = getdate() where MAC =@MACUPDATE tblScan set ScanDate = (select ScanDate fromopenxml(@iTree,'ComputerScan', 1)with(ScanDate smalldatetime 'scanheader/ScanDate')),LastModified = getdate() where MAC =@MACUPDATE tblScanDetail set GUIID = #temp.ID, GUIParentID =#temp.ParentID, AttributeValue = #temp.scanattribute, LastModified =getdate()FROM tblScanDetail INNER JOIN #tempON (tblScanDetail.GUIID = #temp.ID ANDtblScanDetail.GUIParentID =#temp.ParentID AND tblScanDetail.AttributeValue = #temp.scanattribute)WHERE MAC = @MAC!!!!!!!!!!!!!!!!!! THIS IS WHERE IT SCREWS UP, THIS NEXT INSERTSTATEMENT IS SUPPOSE TO HANDLE attributes THAT WERE NOT IN THE PREVIOUSSCAN SO CAN NOT BE UDPATED BECAUSE THEY DON'T EXISTYET!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!INSERT INTO tblScanDetail (MAC, GUIID, GUIParentID,ScanAttributeID,ScanID, AttributeValue, DateCreated, LastModified)SELECT @MAC, b.ID, b.ParentID,tblScanAttribute.ScanAttributeID,@scanid, b.scanattribute, DateCreated = getdate(), LastModified =getdate()FROM tblScanDetail LEFT OUTER JOIN #temp a ON(tblScanDetail.GUIID =a.ID AND tblScanDetail.GUIParentID = a.ParentID ANDtblScanDetail.AttributeValue = a.scanattribute), tblScanAttribute JOIN#temp b ON tblScanAttribute.Name = b.NameWHERE (tblScanDetail.GUIID IS NULL ANDtblScanDetail.GUIParentID ISNULL AND tblScanDetail.AttributeValue IS NULL)ENDELSEBEGINHere are a few table defintions to maybe help out a little too...if exists (select * from dbo.sysobjects where id =object_id(N'[dbo].[FK_tblScan_tblAsset]') and OBJECTPROPERTY(id,N'IsForeignKey') = 1)ALTER TABLE [dbo].[tblScan] DROP CONSTRAINT FK_tblScan_tblAssetGOif exists (select * from dbo.sysobjects where id =object_id(N'[dbo].[tblAsset]') and OBJECTPROPERTY(id, N'IsUserTable') =1)drop table [dbo].[tblAsset]GOCREATE TABLE [dbo].[tblAsset] ([AssetID] [int] IDENTITY (1, 1) NOT FOR REPLICATION NOT NULL ,[AssetName] [nvarchar] (50) COLLATESQL_Latin1_General_CP1_CI_AS NULL,[AssetTypeID] [int] NULL ,[MAC] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,[DatelastScanned] [smalldatetime] NULL ,[NextScanDate] [smalldatetime] NULL ,[DateCreated] [smalldatetime] NULL ,[LastModified] [smalldatetime] NULL ,[Deleted] [bit] NULL) ON [PRIMARY]GO-----------------------------if exists (select * from dbo.sysobjects where id =object_id(N'[dbo].[tblScan]') and OBJECTPROPERTY(id, N'IsUserTable') =1)drop table [dbo].[tblScan]GOCREATE TABLE [dbo].[tblScan] ([ScanID] [int] IDENTITY (1, 1) NOT FOR REPLICATION NOT NULL ,[AssetID] [int] NULL ,[ScanDate] [smalldatetime] NULL ,[AssetName] [nvarchar] (50) COLLATESQL_Latin1_General_CP1_CI_AS NULL,[MAC] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,[DateCreated] [smalldatetime] NULL ,[LastModified] [smalldatetime] NULL ,[Deleted] [bit] NOT NULL) ON [PRIMARY]GO----------------------------if exists (select * from dbo.sysobjects where id =object_id(N'[dbo].[tblScanDetail]') and OBJECTPROPERTY(id,N'IsUserTable') = 1)drop table [dbo].[tblScanDetail]GOCREATE TABLE [dbo].[tblScanDetail] ([ScanDetailID] [int] IDENTITY (1, 1) NOT FOR REPLICATION NOTNULL ,[ScanID] [int] NULL ,[ScanAttributeID] [int] NULL ,[MAC] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,[GUIID] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_ASNOT NULL,[GUIParentID] [nvarchar] (50) COLLATESQL_Latin1_General_CP1_CI_ASNULL ,[AttributeValue] [nvarchar] (50) COLLATESQL_Latin1_General_CP1_CI_ASNULL ,[DateCreated] [smalldatetime] NULL ,[LastModified] [smalldatetime] NULL ,[Deleted] [bit] NOT NULL) ON [PRIMARY]GO------------------------------------------------------------My problem is that Insert statement that follows the update intotblScanDetail, for some reason it just seems to insert everything twiceif the update is performed. Not sure what I did wrong but any helpwould be appreciated. Thanks in advance.
