Hi,
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.
Thanks,
Tiago
Hi,
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.
Thanks,
Tiago
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.
View 1 Replies View RelatedHello 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?
thnx
S ]-[ /- | ]-[ /- N
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 VøyenliEDB-konsulent asNORWAY
View 2 Replies View RelatedHi guys,
A simple question of good practices: is it better to have a cascade update/delete on a table? Or is it better to do it "by hand" in a SP?
Thanks a lot.
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
heres the db structure
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?
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
Regards
Jez
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)
);
Hello all,
Ok, I finally got my SqlDataSource working with Oracle once I found out what Oracle was looking for. My next hurdle is to try and set the Update Command and Parameters dynamically from a variable or radiobutton list. What I'm trying to accomplish is creating a hardware database for our computers by querying WMI and sending the info to textboxes for insertion and updating. I got that part all working nicely. Now I want to send the Computer name info to a different table column depending on if it is a laptop or desktop. I have been tossing around 2 ideas. A radiobutton list to select what it is and change the SQL parameters or do it by computer name since we have a unique identifier as the first letter ("W" for workstation, "L" for Laptop). I'm not sure what would be easiest but I'm still stuck on how this can be done. I posted this same question in here a few days ago, but I didn't have my SqlDataSources setup like I do now, I was using Dreamweaver 8, it is now ported to VS 2005. Below is my code, in bold is what I think needs to be changed dynamically, basically i need to change DESKTOP to LAPTOP...Thanks for all the help I've gotten from this forum already, I'm very new to ASP.NET and I couldn't do this without all the help. Thanks again!
<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:CAT %>"ProviderName="<%$ ConnectionStrings:CAT.ProviderName %>" SelectCommand='SELECT * FROM "COMPUTER"' UpdateCommand="UPDATE COMPUTER SET DESKTOP = :DESKTOP, TECH = :TECH, SERVICE_TAG = :SERVICE_TAG WHERE USERNAME=:USERNAME">
<UpdateParameters>
<asp:ControlParameter Name="USERNAME" ControlId="txtUserName" PropertyName="Text"/>
<asp:ControlParameter Name="SERVICE_TAG" ControlId="txtServiceTag" PropertyName="Text"/>
<asp:ControlParameter Name="TECH" ControlId="txtTech" PropertyName="Text"/>
<asp:ControlParameter Name="DESKTOP" ControlId="txtComputerName" PropertyName="Text"/>
</UpdateParameters>
</asp:SqlDataSource>
I am trying to filter rows in a table using a query. It needs to be based on two parameters in separate columns. For example, I need to find people of a specific age group, and then further filter them by a hair color. How can I do this?
View 1 Replies View RelatedSQL Server 2005 is timing out when running loooong queries.Is there a global place I can extend the timeout for queries? I do not mean in code but just in general use?Thanks
Craig
Hey guys,
I was wondering if there was a way to set a local variable from the results of a query or stored procedure.
For example, I have a stored procedure or a select statement that returns 1 row, with columns "a" "b" "c" "d"
I want to set my variable to be the value in column "b"
Is there a way to do that? I'm new to tsql, so any code would help.
I tried this, but I know my syntax is messed up
declare @myvar as integer
set @myvar = (execute mystoredProcedure).b
thanks
i am using sqlserver 2000, and i was wondering how do i go aboutsetting the query time out. is there a way to configure the querytimeout for a specific user id?
View 1 Replies View RelatedI have a query in which I'd like to use the username of the user currently logged in. The expression im using to retrieve the username is: Membership.GetUser().UserName. Currently I have the following: <asp:SqlDataSource ID="ProjectSource" runat="server" ConnectionString="<%$ ConnectionStrings:Code %>" ProviderName="<%$ ConnectionStrings:Code.ProviderName %>" SelectCommand="Select Name, Namespace from Project where User = $Username"> <SelectParameters> <asp:Parameter DefaultValue="" Name="$Username" /> </SelectParameters> </asp:SqlDataSource> <asp:GridView ID="GridView1" runat="server" DataSourceID="ProjectSource" />I'd somehow like to set up $Username to be equivlent to Membership.GetUser().UserName.
View 2 Replies View RelatedHi,
I've set the Query time-out parameter for my default MSDE instance to 1 sec (through the Enterprise Manager) and since the restart of the server I can't connect it through any client tool.
Does anybody know how to return the default value of Query time-out (600s) without using enterprise manager?
thanx a lot
Hi!
Is it possible to set a query result (scalar) to scalar variable. I would like to set a qery result (SELECT COUNT(*) FROM MyTable) to a scalar variable:
DECLARE @temp int
SET @temp = query result...
Is it possible? I couldn't find the way to do that...
We are in development stage of an application which uses Query Notification feature of SQL Server 2005. When the development started what the development team did was, they just Enabled broker on the database by SET ENABLE_Broker statement and they started using Query Notification. Now the application is in testing phase and when we test with many user, the performance is really slow. What i want to know is , when we use Query Notification what all are the setting to be done at the database level. Is this setting enough. And also how can i tune this system. any useful link is appreciated.
thanks in advance
Madhu
Hi! Select gets all records that contains illegal chars... Ok, to replace '[' { and some other chars I will make AND '% .. %' and place other intervals, that is not the problem.The problem is: How to replace not allowed chars ( ! @ # $ % ^ & * ( ) etc. ) with '_' ?I have seen that there is a function REPLACE, but can't figure out how to use it. 1 SELECT user_username
2 FROM users
3 WHERE user_username LIKE '%[!-)]%';
I have a set of data spread across a number of tables regarding stock market data. An example of this follows:
Market Capitalization...
Date CompA CompB
01/01/11 100 5
02/01/11 102 4
Share Price....
Date CompA CompB
01/01/11 100 100
02/01/11 101 99
Event Data...
Date Company
01/01/11 CompA
02/01/11 CompB
Pretty simply, I need a way to retrieve the market capitalisation and share price data based on the event data. So for instance I say 'oh, there is an event on the 01/01/11 involving company A, the market capitalisation on this day was 100, then for the next event it was 4 for company B.
I can also transpose the data so that the company name is in the rows and the dates in the columns for the market cap and share price tables, but this leads to the issue that when I try and get the data, I don't know how to query the correct company for that date.
For instance:
SELECT Event.Date, Event.Company
FROM Event
how do I now say.....
SELECT MarketCapitalisation.Column
WHERE Column = Event.Company
AND MarketCapitalisation.Date = Event.Date.
I have played around with a few basic joins, but I am having issue with the principle of that second to last line of SQL (so only getting the correct column).
I still have a copy of the data in excel so can flip things around as needed, but that would only mean that I would have the issue of WHERE Column = Event.Date instead of Event.Company.
Hello,
I have a report which displays a customers invoice, in both the companys local currency, and the customers local currency.
The report language is "English (United Kingdom)"
The fields showing customers currency language setting is set to something else, i.e. "France (French)" to display the Euro currency.
The application handles 34 currencies, the query returns the language string, ("France (French)"), to allow the report to bind its language setting to the querys output.
However, it doesn't work, a normal textbox will display the correct country name string, but Reporting Services cannot bind the language setting to a query result. So I also tried setting it as a report parameter, but no joy either (all currencys revert to USD).
I'm using =First(Fields!curFormat.Value, "myDataSet") to bind the 'language' setting, the result of this expression returns "France (French)", which is a valid option for this language setting, as it's in the drop down list.
Rather than create 34 seperate reports for each currency, are there any suggestions on how to bind a fields language setting to a query result?
Hi! I'm new to SQL server. I need help.
I have 2 tables:
Table A (A_ID, X) where A_ID is the primary key.
Table B (B_ID, A_ID, Y) where B_ID is the primary key, and A_ID is the foreign key.
I want to change the value of A_ID of Table A, say A1 into A2. How can I automatically change the value of A_ID in Table B if the record exists?
How can I delete a record in Table A and the corresponding record in Table B is deleted automatically?
Thanks in advance!
Chung
I'm looking for a query that can "batch" update one table from another. For example, say there are fields on both tables like this:
KeyField
Value1
Value2
Value3
The two tables will match on "KeyField". I would like to write one SQL query that will update the "Value" fields in Table1 with the data from Table2 when there is a match.
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!
View 1 Replies View RelatedI have a Sql Server 2005 table with 3 fields, an ID field (primary key), a parent ID field, and Name. The parent ID references the ID field (foreign to primary - many to one) within the same table so that records can reference their parent. I would like to place a cascade delete on the ID field so that when the primary ID is removed it will automatically remove all those records with a parent ID that match. Sql server does not allow me to establish this cascade delete.I was considering a trigger instead but only know how tio use the AFTER paramter and not an alternative. Thanks
View 2 Replies View RelatedHi,
We are developing a new oltp application using SQL Server 2000 and are debating whether to use "cascade delets" or not. In earlier apps, we had issues using cascade deletes like someone deleted parent by mistake and all child records got deleted OR SQL Server crashed in middle of cascade delete and records were lost or performance became an issue when there were huge # of child records to be deleted,etc.
Are there any recommendations for/against using Cascade deletes and when to use and when NOT to use cascade deletes ?
Thanks
Satish
OK, so now I'm just being lazy, but after seeing a question about this, I wonder which is actually better?
Assuming that you have SPROC only access to your data, which is better/more effeicient.
Having the stored procedure actually do the deletes/updates (which is the way I always do this) or enabling CASCADE DELETE/UPADTE in the database?
Just curious, what do most people do.
Logically to me, the "UPDATE" is actually a logical DELETE and INSERT anyway because it's a new "thing"
Unless of course you buy into surrogates
Brett
8-)
Hint: Want your questions answered fast? Follow the direction in this link
http://weblogs.sqlteam.com/brettk/archive/2005/05/25/5276.aspx
Add yourself!
http://www.frappr.com/sqlteam
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?
View 2 Replies View RelatedI am a C# programmer also acting as the dba for a SQL Server project. I have a table called Folder that has child records in a table called FolderItems. When a Folder is deleted I want the FolderItems to be deleted. I know how to accomplish via code, but I would prefer to have SQL Server perform the delete just in case a folder is deleted via SQL Management Studio or other method.
Is a trigger the way to go about this? I know how to create triggers For Delete, but I just wondering is this the best method to create a Cascade delete or does SQL have any built in "Cascade" delete features.
I am using SQL Server 2005 if this matters.
Thank you,
Corby Nichols
Flying Elephant Software