i run this cmd to execute a cascade update to another database but did not work.
USE [testdb1]
GO
/****** Object: Trigger [dbo].[tgr_Upddb2] Script Date: 07/29/2007 08:34:47 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER TRIGGER [dbo].[tgr_Upddb2]
ON [dbo].[Table1]
FOR UPDATE
AS
BEGIN
SET NOCOUNT ON
UPDATE U
SET u.fk_fld = i.pk_fld
FROM inserted AS I
JOIN testdb2.dbo.table2 AS U
ON U.fk_fld = I.pk_fld
END
i just got a job and i have to learn triggers to pass my test , however,i'mfinding the cascade trigger a bit difficult, does it update other tables automatically when a column is updated?
I have 4 colums in a table Project, Sections,Tasks,Subtasks Each subtask will haven a row.
I need to write a trigger when I delete a task it needs to delete all the subtasks relating to it. When I delete a section it needs to delete all the tasks and subasks relating to it. similarly for project. This trigger for task-subtask works. CREATE TRIGGER "[Deletetasktrigger]" ON [Tbl] FOR DELETE AS SET NOCOUNT ON /* * CASCADE DELETES TO '[Tbl B]' */ DELETE [tbl] FROM deleted, [Tbl] WHERE deleted.[task] = [Tbl].[task] THis works fine. But when I do it for sections I get this error.
I have three tables: BulkMemberHeader - which has a cascade delete on BulkMemberDetail of any related records BulkMemberDetail €“ which has a DELETE trigger which gets the member ID from deleted and deletes the member record from the member table Member
This issue: > When I delete a record from BulkMemberDetail the trigger fires and deletes the record from the Member table as it should > If I delete a record from the BulkMemberHeader, all corresponding records in BulkMemberDetail are deleted, but the trigger to delete the record in the Member table does not seem to fire
Is it a limitation on SQLServer 2000 that does not allow triggers to fire in a scenario like this?
I'm trying to create relational database with some triggers in SQL Server 7.0, but it doesn't work as expected. Let's say that I have 'Office' database with two tables, 'Users' and 'UserRights' (userRights table should have much more rights, but that's not relevant for this problem):
CREATE TABLE [Users] ( [FS_Username] [nvarchar] (8) NOT NULL , [FS_Password] [nvarchar] (32) NOT NULL , CONSTRAINT [PK_Users] PRIMARY KEY NONCLUSTERED ( [FS_Username] ) ON [PRIMARY] ) ON [PRIMARY] GO
CREATE TABLE [UserRights] ( [FS_Username] [nvarchar] (8) NOT NULL , [FI_UserType] [int] NOT NULL CONSTRAINT [DF_UserRights_FI_UserType] DEFAULT (1), [FI_AllowLogin] [int] NOT NULL CONSTRAINT [DF_UserRights_FI_AllowLogin] DEFAULT (1), CONSTRAINT [PK_UserRights] PRIMARY KEY NONCLUSTERED ( [FS_Username] ) ON [PRIMARY] , CONSTRAINT [FK_UserRights_Users] FOREIGN KEY ( [FS_Username] ) REFERENCES [Users] ( [FS_Username] ) ) ON [PRIMARY] GO
Foreign Key CONSTRAIN above is created by adding both tables to the diagram and defining relationship between these two tables FS_Username field, where 'Enable relationship for INSERT and UPDATE' option is turned ON. You can easily see this if you create diagram youself and insert these two tables in it. Next to this, I created two triggers that should handle inserting/deleting rows in UserRights table as consequence of inserting/deleting rows in Users table:
CREATE TRIGGER InsertUserRights ON Users FOR INSERT AS BEGIN INSERT INTO UserRights (FS_Username) (SELECT FS_Username FROM Inserted) END
CREATE TRIGGER DeleteUserRights ON Users FOR DELETE AS BEGIN DELETE UserRights WHERE FS_Username IN (SELECT FS_Username FROM Users) END
Now, when (manually) I insert row in Users table, UserRights table gets updated accordingly. HOWEVER, when I try to delete one or more entries from Users table, I get error report. For example, if you try to execute following two commands:
Insert Into Users (FS_Username, FS_Password) VALUES ('John', 's')
Delete from Users
... first command will succede, but second one will fail with message:
DELETE statement conflicted with COLUMN REFERENCE constraint 'FK_UserRights_Users'. The conflict occurred in database 'Office', table 'UserRights', column 'FS_Username'. The statement has been terminated.
Does anyone know how to resolve this problem without loosing constrains and triggers ? (If I turn off 'Enable relationship for INSERT and UPDATE' option for relationship, things will work fine, but than I can make inconsistent data in UserRights table).
Where Trace_EnterId is the parent ID and BubbledTraceEnter_Id is the child ID. My test case has nested trace lines that go down 5 levels, but when I delete the top trace line, only the child directly under it is deleted leaving the other 3 as orphans. Here's the trigger:
ALTER TRIGGER [dbo].[DTrig_xTrace] ON [dbo].[ix_Trace] FOR Delete AS BEGIN SET NOCOUNT ON; DELETE FROM ix_Trace FROM ix_Trace INNER JOIN deleted as dt ON ix_Trace.Trace_BubbledTraceEnter_Id = dt.Trace_EnterId
Does anyone know how to do a cascade update in SQL 2005 using the studio manager?Basically, I have a project table with a status column. If the status is set to 2, then I need to update another table that references the project id.
Hello all, I am new to SQL and I was hoping someone could explain something to me about 'on update cascade'. I understand what 'on update cascade' does (i think) - it updates the child table when the parent table is updated. What i do not understand is that the 'on update cascade' works on the primary key of the parent table, but i was on the understanding that the primary key doesn't change often if at all so why would the 'on update cascade' be of use? Sorry for my ignorance and i realise i must be missing something simple but would be grateful for any help. Thanks
Is it possible to cascade update and delete while DRI remains there ? That is without deleteing refrential integrity. If anyone have example of cascade delete and Update using Pubs or Northwind Example , i'll be really obliged.
i want to reffer A1,A2 column from a Table A to B1 column of Table B. when i use the on update cascade option for the columns A1 & A2 i get an error for the 2nd one. sql:
alter table A add constraint fk_key1 foreign key (a1) references b(b1) on update cascade;
alter table A add constraint fk_key2 foreign key (a2) references b(b1) on update cascade;
after executing the sql i get the following error for the 2nd sql:
Introducing FOREIGN KEY constraint 'FK_key2' on table 'A' may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints.
if i dont use cascade option then i dont get any error.
but i need to synchronize the data. now can anyone help me how to add the cascade option working for the 2nd column of Table A without seperating the column in a different table?
Hi!For the sake of simplicity, I have three tables, Employee, Department andWorkEmployee >---- Department / /^ ^WorkThe Work table have two columns, empno and depno and consists that theemployee has worked on another department.Here is my scripts:create table employee (empno int not null primary key, depno int not null)create table department (depno int not null primary key)create table work (empno int not null, depno int not null)alter table employee add constraint fk_employee_department foreign key(depno)references department (depno)on update cascadealter table work add constraint fk_work_employee foreign key (empno)references employee (empno)on update cascadealter table work add constraint fk_work_department foreign key (depno)references department (depno)on update cascadeMy problem is the last command. SQL Server responds:Server: Msg 1785, Level 16, State 1, Line 1Introducing FOREIGN KEY constraint 'fk_work_department' on table 'work' maycause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ONUPDATE NO ACTION, or modify other FOREIGN KEY constraints.But I want the depno in the work table to be updated when a department.depnochanges a value.Does anyone have a suggestion on how to overcome this problem?Thanks in advanceBest regards,Gunnar VřyenliEDB-konsulent asNORWAY
Hi, I have a database which saves data about bus links. I want to provide a information to passenger about price of their journay. The price depends on three factors: starting busstop, ending busstop and type of ticket (full, part - for students and old people, ...). So I created a table with three foreign key constraints (two for busstops and one for type). When the busstop is deleted or type of ticket I want all data connected with it to be deleted automatically. I wanted to use cascade deleting. But I receive a following exception: Introducing FOREIGN KEY constraint 'FK_TicketPrices_BusStops1' on table 'TicketPrices' may cause cycles or multiple cascade paths. Specify ON DELETE NO ACTION or ON UPDATE NO ACTION, or modify other FOREIGN KEY constraints. How can I achieve my task? Why should it cause cycles or multiple cascade paths?
I'm looking for a query I can use to alter table relationships. What I want to do in particular, is to set every relationship to cascade on update. Can anyone point me out to a solution? MSDN seems very vague in this subject.
Hello I need to be able to regularly, update or delete data from my parent table and subsequent child tables from A to Z, each table contains data. However, I have having problems. I have already created the tables with primary keys on each table and foreign keys linking each table to the next. I tried to delete a row from the parent table and was given this error: DELETE FROM [dbo].[DomNam]WHERE [DomNam]=N' football ' Error: Query(1/1) DELETE statement conflicted with COLUMN REFERENCE constraint 'FK_DomNam'. The conflict occurred in database 'DomDB', table 'Dom_CatA', column 'DomNam'.
I tried to insert an alter table query: ALTER TABLE dbo.DomNamADD CONSTRAINT FK_Dom_ID REFERENCES dbo.Dom_CatA (Dom_ID) ON DELETE CASCADE ON UPDATE CASCADE But on Execute I saw this error: Error] Incorrect syntax for definition of the 'TABLE' constraint What is wrong with the above syntax? Or would it be better if I used a trigger instead because I already have foreign keys set within the tables?If so please give an example of the syntax for the trigger I would need to update and cascade data from all tables. I would be grateful for any advice. Thanks.
hello, once upon a time when i created my db (originally in access then used the conversion tool, which i now know is wrong!) i thought it would be an amazing idea to have cascading updates and deletes, however it turns out now this is exactly not what i want! if i leave them in then it throws errors when i delete records out of my stock table as related records are in the order_line table here is the code (well i think so, im not the best at sqlserver as you probably can tell already) that im using if anyone can help or point me in the right direction that would be great, thanks USE [nashdfDB1]GO/****** Object: Table [dbo].[tbl_stock] Script Date: 07/13/2007 02:52:14 ******/SET ANSI_NULLS ONGOSET QUOTED_IDENTIFIER ONGOSET ANSI_PADDING ONGOCREATE TABLE [dbo].[tbl_stock]( [Stock_ID] [int] IDENTITY(1,1) NOT NULL, [cat_id] [int] NOT NULL CONSTRAINT [DF__tbl_stock__cat_i__15502E78] DEFAULT ((0)), [sub_cat_id] [int] NULL CONSTRAINT [DF__tbl_stock__sub_c__164452B1] DEFAULT ((0)), [location] [int] NULL CONSTRAINT [DF__tbl_stock__locat__173876EA] DEFAULT ((0)), [n_or_sh] [varchar](50) NULL, [title] [varchar](255) NULL, [description] [varchar](255) NULL, [size] [varchar](50) NULL, [colour] [varchar](50) NULL, [cost_price] [decimal](9, 2) NULL CONSTRAINT [DF__tbl_stock__cost___182C9B23] DEFAULT ((0)), [selling_price] [decimal](9, 2) NULL CONSTRAINT [DF__tbl_stock__selli__1920BF5C] DEFAULT ((0)), [qty] [varchar](50) NULL, [date] [datetime] NULL CONSTRAINT [DF__tbl_stock__date__1A14E395] DEFAULT (getdate()), [condition] [varchar](255) NULL, [notes] [varchar](255) NULL, [visible] [bit] NULL CONSTRAINT [DF__tbl_stock__visib__1B0907CE] DEFAULT ((1)), [picture1] [varchar](50) NULL, [picture1_thumb] [varchar](50) NULL, [picture2] [varchar](50) NULL, [picture2_thumb] [varchar](50) NULL, [picture3] [varchar](50) NULL, [picture3_thumb] [varchar](50) NULL, [picture4] [varchar](50) NULL, [picture4_thumb] [varchar](50) NULL, [display_price] [varchar](50) NULL, [created_by] [varchar](50) NULL, [buying_in_recipt] [varchar](255) NULL, CONSTRAINT [tbl_stock$PrimaryKey] PRIMARY KEY CLUSTERED ( [Stock_ID] ASC)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]) ON [PRIMARY] GO SET ANSI_PADDING OFF
I'm looking for a query I can use to alter table relationships. What I want to do in particular, is to set every relationship to cascade on update. Can anyone point me out to a solution? MSDN seems very vague in this subject.
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'
I have contract table which has built in foreign key constrains. How can I alter this table for delete/ update cascade without recreating the table so whenever studentId/ contactId is modified, the change is effected to the contract table.
Thanks
************************************************** ****** Contract table DDL is
create table contract( contractNum int identity(1,1) primary key, contractDate smalldatetime not null, tuition money not null, studentId char(4) not null foreign key references student (studentId), contactId int not null foreign key references contact (contactId) );
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?
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?
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,
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
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)
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!
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)
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?
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.
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.
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
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
