Foreign Key - ON DELETE RESTRICT
Aug 4, 2006Hi
Are there any way to use foreign key in MS-SQL Express with ON DELETE RESTRICT like other databases?
Best Regards
Igor Sane
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Restrict Delete From A Table
Jan 21, 2005Hi
I need to restrict delete from one table by any user of SQL. How can we do this? This is our master table and we dont want any one to delete data from this table.
Thanks
Bala
Copy And Delete Table With Foreign Key References(...,...) On Delete Cascade?
Oct 23, 2004Hello:
Need some serious help with this one...
Background:
Am working on completing an ORM that can not only handles CRUD actions -- but that can also updates the structure of a table transparently when the class defs change. Reason for this is that I can't get the SQL scripts that would work for updating a software on SqlServer to be portable to other DBMS systems. Doing it by code, rather than SQL batch has a chance of making cross-platform, updateable, software...
Anyway, because it needs to be cross-DBMS capable, the constraints are that the system used must work for the lowest common denominator....ie, a 'recipe' of steps that will work on all DBMS's.
The Problem:
There might be simpler ways to do this with SqlServer (all ears :-) - just in case I can't make it cross platform right now) but, with simplistic DBMS's (SqlLite, etc) there is no way to ALTER table once formed: one has to COPY the Table to a new TMP name, adding a Column in the process, then delete the original, then rename the TMP to the original name.
This appears possible in SqlServer too --...as long as there are no CASCADE operations.
Truncate table doesn't seem to be the solution, nor drop, as they all seem to trigger a Cascade delete in the Foreign Table.
So -- please correct me if I am wrong here -- it appears that the operations would be
along the lines of:
a) Remove the Foreign Key references
b) Copy the table structure, and make a new temp table, adding the column
c) Copy the data over
d) Add the FK relations, that used to be in the first table, to the new table
e) Delete the original
f) Done?
The questions are:
a) How does one alter a table to REMOVE the Foreign Key References part, if it has no 'name'.
b) Anyone know of a good clean way to get, and save these constraints to reapply them to the new table. Hopefully with some cross platform ADO.NET solution? GetSchema etc appears to me to be very dbms dependant?
c) ANY and all tips on things I might run into later that I have not mentioned, are also greatly appreciated.
Thanks!
Sky
Restrict Delete Function On Odbc Connection
Sep 25, 2007i have the odbc connection connected to our SQL databasse via sql user
account through MS access Frontend and having problem controling the delete
function of the account.
In SQL i am only allow the account to read, insert,update and denied delete
on the database and tables. However, the account still be able delete the
records.
Can someone let me know what am i missing in the permission granting.
Delete A Table With Foreign Key
Aug 25, 2007Hi how do i to delete a table with a foreign key?
When i try to delete the table i get error 3726
any?
Delete W/ Foreign Key Question
Oct 24, 2005Is there a way to see the locks associated with a delete statement on a table (tab1) that has 5 or 6 Foreign key relationships. Trying to understand the impact of the delete on concurrency There are several delete deadlocks on one of the foreign key tables (tab2) and the system does not delete from the table (tab2) that is throwing the delete deadlock error. Wondering about the impact of foreign keys on deletes on Tab1 on Tab2.
Didn't see anything in query analyzer that would show the actual locks. It seems to have scans or such but no lock levels etc are shown.
Does anyone have any knowledge of how to see the actual locks thrown by a given statement. The delete on Tab1 statement is very quick so using EM has proved fruitless.
Mike
Delete Data Which Is A Primary And Foreign Key
May 26, 2008Hi,
How do I delete data which is a Foreign Key in another table?
For example;
string query = "DELETE * from user_details WHERE user_ID = '" +userID.Text+ "';
The user_ID is the Primary Key in the user_details table and also a Foreign Key in other tables.
Thank you. (:
Foreign Key Cascade Delete Failure
Mar 7, 2007I have a SQL Mobile DB that I am having problems with deletes cascading via foreign keys to delete all child records. The DB is on a WIndows CE5 device that is running a C#.net application.
The are three tables in my DB that relate to this issue (Tests, TestRawInfo, and TestRawData). The Tests table is the main table. TestRawInfo is a child table of Tests and has a foreign key defined that references the Tests primary key (the relationship is 1:1 with the Tests table). TestRawData is a child table of TestRawInfo and has a foreign key defined that references the TestRawInfo primary key (The relationship is 1:many with the TestRawInfo table). All foreign keys are defined with a Cascade on delete. When I delete one or more records from the Tests table I expect the delete to cascade so that all child records are also deleted. Not all the data gets deleted from the TestRawData table, this results in orphan records. I only see a failure however the next time I attempt to compact the database.
Interestingly I can reproduce the problem by opening my Mobile DB in SQL 2005 on my Desktop and deleting data from the Tests table. If however, I add additional records to these tables through SQL 2005 before attempting to delete, the delete works as expected.
Do you have any ideas on what is going on here? Has any one else reported a similar issue? My current work around is to delete data directly from child tables and not rely on the foreign keys to cascade the deletes.
Delete From A Table Ignoring A Foreign Key
Dec 6, 2007Hi,
I am looking to delete a single row from a relatively small table. Unfortunately, there is a foreign key relationship between this table and a much much larger table. The checking of this foreign key when I am deleting this row seems to significantly impact the performance of the operation. Previously there was an index on this larger table that helped this query run. This index has been dropped to improve the performance of a more frequently executed operation.
Is there a way I can use a hint or something to stop SQL checking this foreign key when deleting the row? I am certain that there are no associated rows in the larger table.
I have read elsewhere that I could disable the foreign key, perform the delete, then enable the foreign key. This delete statement is not a one off process and could happen in the normal operation of the application so I don't really know what the implications of doing this are.
Any suggestions would be appreciated.
Thanks
Rich
Cascade Delete Can Not Apply To Two Foreign Keys
Jul 31, 2004I have a table that contains two foreign keys of two different tables. I want to build a relationship so that when either primary keys deleted in the two tables, the record in the table should be deleted. But, SQL Server does not allow me to save the relationship, it complains that the circling delete might exist. I do not know why, how can I solve this?
Table A:
ID
ProductID <foreign key>
CustomerID <foreign key>
Table Product
ProductID <primary key>
Table Customer
CustomerID <primary key>
I want to cascade delete the record in Table A when either the ProductID is deleted from Product table or the CustomerID is deleted from Customer table.
Conflict Between (cascade) DELETE Trigger And Foreign Key Constrain
Oct 19, 2005I'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).
tnx a lot,
Dejan
Transact SQL :: Delete All Records Using FOREIGN KEY Constraints If Main Table Entity Is Deleted
Oct 29, 2015How to delete records from multiple tables if main table’s entity is deleted as constraints is applied on all..There is this main table called Organization or TblOrganization.and this organization have branches which are in Brach table called tblBranch and this branch have multiple applications let say tblApplication and these application are used by multiple users called tblUsers.What I want is: when I delete the Organization All branches, application and users related to it must be deleted also.How I can apply that on a button click in asp.net web forms..Right now this is my delete function which is very simple
Public void Delete(int? id){
var str=”DELETE FROM tblOrganization WHERE organizationId=”+ id ;
}
And My tables LOOK LIKE this
CREATE TABLE tblOrganization
(
OrganizationId int,
OrganizationName varchar(255)
[code]...
Transact SQL :: Delete Records From Table (Table1) Which Has A Foreign Key Column In Related Table (Table2)?
Jun 29, 2015I need to delete records from a table (Table1) which has a foreign key column in a related table (Table2).
Table1 columns are: table1Id; Name. Table2 columns include Table2.table1Id which is the foreign key to Table1.
What is the syntax to delete records from Table1 using Table1.Name='some name' and remove any records in Table2 that have Table2.table1Id equal to Table1.table1Id?
Cascading Deletes - Which Is Better - A Trigger Or Foreign Key Cascading Delete?
Aug 17, 2005I need to implement my cascading deletes on a SQL database. Is it better (performance/reliablility-wise) to use the Foreign Key Cascading Deletes or to just write my own triggers to do the deletes?I was hoping someone had experimented and found which works best.
View 2 Replies View RelatedRestrict Deletion
Mar 11, 2007What would be the best practice to prevent users who didn't create a record in sql from deleting? When a record is created I have the username who created the record in one of the fields. I was thinking maybe a query?
Thank you in advance.
How To Restrict 100% CPU Hog User
Oct 5, 2004I have an ETL product, every 30 minutes it loads maybe a coupla 100K records of various construction into an SQL Server Db (2000 SP3, on Win 2000 Std Server also Win 2003 Ent Server). It really hammers the Db with a combination of batch insert update and insert fallback to update etc. It does not use 100% CPU actually and is IO bound. Works a treat.
Now the problem, someone has built a .Net ADO based front end, and for the 5 minutes my product runs every 30 minutes they have a hope in hell of getting a reasonable response for their select queries. Now my take is that maybe I can delay for 5ms after each transaction I do to allow the other user processes a chance. But better maybe would be for my ETL product Db user to have a lower priority than other Db users.
What is the best way to achieve this end? If I understood more about how SQL Server prioritizes users and their requests it might help. (round robin?)
Thx.
David
How To Restrict 100% CPU Hog User
Oct 5, 2004I have an ETL product, every 30 minutes it loads maybe a coupla 100K records of various construction into an SQL Server Db (2000 SP3, on Win 2000 Std Server also Win 2003 Ent Server). It really hammers the Db with a combination of batch insert update and insert fallback to update etc. It does not use 100% CPU actually and is IO bound. Works a treat.
Now the problem, someone has built a .Net ADO based front end, and for the 5 minutes my product runs every 30 minutes they have a hope in hell of getting a reasonable response for their select queries. Now my take is that maybe I can delay for 5ms after each transaction I do to allow the other user processes a chance. But better maybe would be for my ETL products user to have a lower priority than other users.
What is the best way to achieve this end? If I understood more about how SQL Server prioritizes users and their requests it might help. (round robin?)
Thx.
David
Restrict Access
May 28, 2008Hi
Is it possible to restrict what IP numbers can access a sql server 2005 (can this do done in sql server 2005)?
Restrict Query Results
Oct 25, 2006Hi guys, say i wrote a query that returns 1,000 records.. what kinda query could i write that only returns say the first 50 records of the 1,000 recs..
View 4 Replies View RelatedRestrict Access To DB On SQL2K
Nov 12, 2001Hi,
Is there a way to prevent new users from accessing a SQL2000 db (like to put it into DBO mode) while leaving current users finish their running jobs.
I tried Alter Database and sp_dboptions and both in SQL2000 requires to close all current users. It was working in SQL7 but not in 2000.
Thanks
AAA
Restrict A Column To A User
Jun 19, 2001Is there a switch in 7.0 that I can set if
I don't want users to see a certain column in
a table.
Ex: TableA(column1, column2, column3)
If they do a select * from tableA
they will receive information on all three columns,
I don't want them to see the last column3.
Restrict MS Access From Accessing SQL
Dec 7, 1999Is there any way of not allowing users with MS Access from using it to connect to a SQL 7 server? Basically, no connection to SQL through MS Access should be allowed. Any ideas?
View 2 Replies View RelatedRestrict Client Access
May 27, 2005Hello Everybody,
I need some help.
When we install the Database at the clients end, the client can see all
the SQL tables, views and stored procedure in the Enterprise Manager.
Is there a way via which you can restrict the client from viewing the
tables in SQL Enterprise manager?
I hope you understand my question.
I would be oblidged if my friends could help me...
Thanks
Restrict Local Cube
Mar 13, 2006Does anyone know how can we prevent users from creating offline/local cube (in Excel) from our OLAP/Analysis Service server ?
Thank you.
Restrict Access To The C: Drive
Mar 25, 2008My users have sa rights to our SQL servers. I want to restrict their access to the C: so that they do not restore DB's there.
I thought at first I could create a Windows user that runs the SQL Service then grant them read rights to the C:. This does not give the user enough rights to start the service.
How Can I Restrict Bandwidth Between To SQL Servers
Jul 23, 2005HiI have two SQL2000 servers in different sites, once a day approximately1M of data in the form of a large update is required to be transferedbetween the 2. We have use of a 2M pipe between the servers but thereis no quality of service, the other users on the pipe are traders sothere must be no interruption in the quality of their bandwidth at anytime.Is there any way of throttling back the data transfer between the twoservers to restrict its bandwidth use. Obviously we want to retain themax bandwidth on our local network.The pipe is administered by a seperate company so we do not have adminaccess to their gateways, routers etc.. so a solution which we canimplement on our database servers would be the easiest.I am not sure if this is the right newsgroup for this but anyinformation would be greatThanksMark
View 1 Replies View RelatedRestrict Login To One Instance
Jul 20, 2005Hello All,I'm using SQL Server 2000 and wish to restrict the user login to oneinstance only. Is this possible? Is this wise?
View 3 Replies View RelatedHow To Restrict All SQL Database's Size
Jul 20, 2005Hello -I have over 100 MSSQL Databases on my SQL SERVER. How do I restrictall the MSSQL databases and its transaction logs to 100 MB.Can someone help me with any script which will do that.Thanks,Rubal Jainwww.Rubal.net
View 1 Replies View RelatedNeed To Restrict A Login To See Only One Database
Feb 6, 2008
Here is what I need to do, maybe someone could tell me what to do.
I need to create a login (I got that part) and then limit that login to only be able to see one of the databases on the server. So this is what I'm looking for.
user1 logs in to the server
user1 can only see the database I want them to see
and can not see anything else, no msdb, no tempdb, no security, no management etc.
I also need this user to be read only (only able to run select statements)
and this user will not be the owner of the database
Please help i'm pulling my hair out
Thanks Ahead of time
How To Restrict Users To Particular Databases
Dec 16, 2006While web hosting I use Sql Server 2000 as the database. Imagine I have hosted 3 Web Sites. All these 3 users want to modify/update their designs. What I did is I created respective 3 users having access to the respective databases only. So that they can registerd the ip and add to the Sql Server 2000 Enterprise Manager. These users are able to access their own databases only. But all these 3 users are able to access the default databases like master,pubs etc. How to restrict this.
Also suggest which is the optimal way to give control to the respective users while using Sql Server 2000.
====Suresh, P.R, Postal Training Centre, Mysore.
Restrict Access To The C: Drive
Mar 26, 2008My users have sa rights to our SQL servers. I want to restrict their access to the C: so that they do not restore DB's there.
I thought I could create a Windows user that runs the SQL Service then grant them read rights to the C:. This does not give the user enough rights to start the service.
Restrict The Number Of Records From Query
Feb 9, 2004Hi,
ive a table of over 90,000 records . is ther any method for restricting the number of records returned by a SELECT query
i want to implement a query system which will give me the first 50 records, next 50 ,... and so on
can ne body help ?
Restrict Login Access By Hostname/ip Possible?
Oct 2, 2007In SQL2005, is it possible to restrict incoming sql or windows authentication logins by source hostname or IP address? Perhaps using endpoints?
We are currently using hosts file on the db server as a temporary solution, but the SA will not allow us to use this as a permanent solution.
The app team I support is asking me to build an "idiot proof" database so that an Dev or Test app server they may configure, doesn't unintentionally connect to the Production database and damage/alter data.
Don't worry, I've already asked if they can't follow some kind of M&P's to prevent this kind of silly behavior, but they insist on DBA team creating a bullet-proof database that can outsmart app developers who try to attempt something dumb like this.
Any ideas or suggestions would be greatly appreciated.
TIA,
Phil
Phil Streiff