How To Bypass FK Constraints???
Aug 24, 2005
Hi,
I have relationships built for several tables and I want to bypass the FK restraints when deleting/truncating a table. The FK works fine when some one is trying to delete soemthing within the application, but on an administrative level, it is becoming VERY BOTHERSOME! Any help will be greatly welcomed!
__
Updated 8/24 @ 16:24
I tried a little experiment. I took the constraint off of my two main tables, "manufacturers" and "products". I tried to TRUNCATE the tables again and I got the same error message. My products seems to have other contraints with two other tables. I checked out the two tables and both of them are empty. What's the deal!?! Again, any help is welcomed!
__
Updated 8/24 @ 17:02
Ok so I tried to disable the constraints: ALTER products NOCHECK CONSTRAINT ALL, but it didn't work with truncating.
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Jan 9, 2007
I know this is probably a flick of a switch but I cannot figure out which switch. Setup is SQL Server / Stored Procedures / DAL / BLL(skipped for testing) / PL. The stored procedure queries from only one table and two columns are ignored because they are being phased out. I can run the stored procedure and preview the data in the DAL but when I create a page with an ODS linked to the DAL and a GridView I get this error. I checked every column that does not allow nulls and they all have values. I checked unique columns (ID is the only unique and is Identity=Yes in the table definition). I checked foreign-key columns for values that are not in the foreign table and there are none. Any ideas why do I get this?
Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.
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Jan 17, 2008
Hi,
I am getting the above error when trying to load a report into my Web Application, I have tracked the error down to one specific field in my database. Even though this field is a NVarChar field and is of size 30 it would seem that there is an issue returning the value from the field. I can write it into the database no problems but when I try to get it out of the database it returns the above error.
e.g
MOB 401.908.804 - Fails
0401.907.324 - okay
8239 9082 (pager) - fails
Anyone got an idea on how to fix this????
Regards..
Peter.
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Jul 3, 2004
Well im trying to install some software on someone's cpu. I dont know his password, and he has forgotten. How do I get pass the login screen? and assign a new name and password. :confused:
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Nov 22, 2006
is it possible to have the script component read X number of rows and then tell it don't read anymore, just pass this X number of rows to the destination?
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Jul 11, 2002
I am looking for some advice. On a 6.5 database a user seemed to be having slow response, someone decided to stop and start the services. The database in question went into recovery mode. 24 hours later a network tech decided to stop and start the services again because the database was in recovery still. 5 hours later they decided to run the statement to put the database in Bypass Emergency Mode - "update sysdatabase set status = -32768 where name = 'dbname'", then they decided to set the status to 0 which made the database available again.
What can I do to ensure they did not damage the database? Can I compare the backup prior to the issue with the current database?
Thanks
Bill
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Feb 3, 2000
Is it possible to have a login that can access a table, which has an Update trigger on a column, and do some updating on another column but not have the trigger fire?
I cannot disable the Trigger. This db is on production and the trigger cannot be taken off. I also cannot bcp the data out and do the updating and bcp back in. The production table must remain as is, however I need to update some cols without the trigger firing.
Any ideas??
Thank you,
tw
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Sep 4, 2006
Hi all
My database 'a2rd' was marked as suspect
and i did the following steps to make it available
USE MASTER
select name, dbid, mode, status from sysdatabases where dbid =
db_id('a2rd')
UPDATE SYSDATABASES SET STATUS=-32768 WHERE NAME='a2rd'
EXEC sp_configure 'show advanced option', '1'
EXEC sp_configure 'allow updates', '1'
RECONFIGURE WITH OVERRIDE
DBCC NEWALLOC(a2rd)
DBCC TEXTALL (a2rd)
DBCC CHECKDB (A2RD
now how can i take the backup of the database that was in emergency mode..
Thanks in advance..
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Aug 8, 2001
If I use DTS to import a text file, will insert triggers fire on this table?
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Nov 21, 2007
1st question I have to ask is:
Is Emergency Mode the same as Bypass Recovery Mode?
2nd:
I have a SQL2005 Database that was suspect this morning. I put the database in Emergency Mode: alter database {dbname} set emergency.
I did a dbcc checkdb on the database and found some corrupt indexes. I attempted to do a dbreindex on the table and got the error:
Could not run BEGIN TRANSACTION in database '{dbname}' because the database is in bypass recovery mode.
How can I put the database in single_user mode and to a point where I can reindex the 1 table that is causing the problems. I would even be willing to drop the indexes and re-create.
Any suggestions or help would be appreciated!
Thanks in advance.
Pete
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Oct 26, 2007
Hi,
I would like to call the report from an external source:
The report requires a paramater.
I tried the following:
<a href='http://Report.aspx?ItemTakeOn%2fItemTakeOn&ProcessNo=278'> Report</a>"
The link works & i added the parameter in the link (ProcessNo=278)
it opens the report but i still have to manually insert the Parameter.
Also tried setting the parameter as hidden.
How do i bypass this?
Anyone please Assist!
Regards
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Jul 20, 2007
At this link here:
http://www.microsoft.com/technet/prodtechnol/sql/2005/dwsqlsy.mspx
I read this snippet here:
Push data from the Integration Services pipeline or a custom application. The data can flow directly into an Analysis Services partition from the Integration Services package pipeline, without intermediate storage. This scenario can be used to reduce the latency (and storage cost) of analytical data.
What I think this means is that using SSIS I could bypass porting the data from ODS to DW, and instead use SSIS control flow/data flow components to direct the data straight to the Analysis Services Cube database storage partition.
I was hoping by posting this thread on this MSDN forum I could get details or links from those more knowledeable than I on this subject pointing me to how I may go about using SSIS to implement this approach. Perhaps package code examples or instructions about the components I could use to do this?
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Oct 15, 2006
I'm using MS SQL 2000 with enterprise manager I have a customers table called high_customer, it has a primary key called IDI have an invoices table called high_invoices, it has no primary keys but it does have a column for customer ID.I want to set it so if a customer is deleted from the customers table, any invoices with that customerID are deleted from the invoices table.Do I need to specify a constraint? If so how do I do it in enterprise manager.Thanks
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Apr 27, 2005
Hi,
I have the following problem:
I have a table called Jobs with the fields:
JobNumber, Name, Customer, ...
And a table called Customers with the fields:
ID, Name, Address, ...
Obviously Jobs is linked to Customers with the Customer<->ID fields. I want to set it up so that if a Customer is deleted, then any Jobs that had that customer listed now have the Customer field set to NULL. Can I do this with a constraint, or will I need to use a trigger?
Cheers,Little'un
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Feb 27, 2001
Hello,
I am not a DBA and I need to do the following.
I have 2 tables A and C and both have a common fileds say emp.Emp is pkey in C .
There can be a record in C but not in A.If a record is inserted in A then it checks for the same employee info in C .If not found it do not allow to insert a record in A.
How to go for it?
Thanks!
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Feb 5, 2004
Hiya peops!!
Listen i was wondering if anyone could tell me whether they know the correct syntax for creating constraints or where i could find it on the net???
Thanks
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Feb 5, 2004
Hiya peops
im creating a constraint using enterprise manager for 1 of my tables n was wondering how u constructively create a constraint expression, there is a specific style,right??
Thanks
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Nov 20, 2007
hi there,
i have added my tables and defined foreig keys and primary keys for my table, but when i try to put the data it gives me some error reagards to parent key..and it wont let me drop the table... can anybody tell me how to drop the foregin key..i have tried (
ALTER TABLE module DROP CONSTRAINT ATTENDANCEID_FK;)
this formula and it wont work,
heres my tables and relationships:
CREATE TABLE ATTENDANCE
(ATTENDANCEID char(4) NOT NULL,
StudID char(4) NOT NULL,
ModuleID char(4) NOT NULL,
Week1 VARCHAR(10),
Week2 VARCHAR(10),
Week3 VARCHAR(10),
Week4 VARCHAR(10),
Week5 VARCHAR(10),
Week6 VARCHAR(10),
PRIMARY KEY (ATTENDANCEID));
ALTER TABLE ATTENDANCE
ADD FOREIGN KEY (studID) REFERENCES student(studID);
ALTER TABLE ATTENDANCE
FOREIGN KEY (moduleID) REFERENCES module(moduleID));
insert into ATTENDANCE values
('F1','A1','E1','Yes','Yes','Yes','Yes','Yes','Yes');
insert into ATTENDANCE values
('F2','A2','E2','Yes','No','Yes','Yes','No','Yes');
insert into ATTENDANCE values
('F3','A3','E2','Yes','Yes','Yes','No','Yes','Yes');
insert into ATTENDANCE values
('F4','A4','E2','Yes','Yes','Yes','Yes','No','Yes');
insert into ATTENDANCE values
('F5','A5','E1''Yes','Yes','No','Yes','Yes','Yes');
insert into ATTENDANCE values
('F6','A6','E2','Yes','Yes','Yes','Yes','Yes','No');
insert into ATTENDANCE values
('F7','A7','E1','Yes','Yes','Yes','Yes','No','No');
insert into ATTENDANCE values
('F8','A8','E2','Yes','Yes','Yes','No','Yes','Yes');
insert into ATTENDANCE values
('F9','A9','E3','Yes','Yes','No','Yes','Yes','Yes');
CREATE TABLE MODULE
(ModuleID char(4) NOT NULL,
ATTENDANCEID char(4) NOT NULL,
ModuleName varchar(45),
ModuleCode varchar(6),
PRIMARY KEY (ModuleID));
ALTER TABLE MODULE
ADD FOREIGN KEY (attendanceID) REFERENCES attendance(attendanceID);
insert into MODULE values
('E1','F1','Workshop Research and Project Implementation','Im3023');
insert into MODULE values
('E2','F2','Advanced Database Development','SD3042');
insert into MODULE values
('E3','F3','Advacned Information Systems Develpment','SD3043');
charles
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Dec 11, 2007
I am fairly new at SQL and also new to this forum. So I don't know if this topic belongs here or not.
But anyways, I found this tutorial online. However, I am having trouble completing it. Can someone please help me?
Given the following table definitions:
CREATE TABLE USERS
(
USERID CHAR(5) PRIMARY KEY,
NAME VARCHAR(30),
RATING CHAR(1) CHECK (RATING IN (A, B,C,D)
)
CREATE TABLE ITEMS
(
ITEM_NO NUMBER PRIMARY KEY,
DESCRIPTION VARCHAR(50),
OFFERED_BY CHAR(5) REFERENCES USERS(USERID) ON UPDATE CASCADE ON DELETE CASCADE,
START_DATE DATETIME,
END_DATE DATETIME,
RESERVE_PRICE NUMBER
)
CREATE TABLE BIDS
(
USERID CHAR(5) REFERENCES USERS ON UPDATE CASCADE ON DELETE SET NULL,
ITEMNO NUMBER REFERENCES ITEMS(ITEM_NO) ON UPDATE CASCADE ON DELETE CASCADE,
BID NUMBER,
BID_DATE DATETIME,
PRIMARY KEY(USERID,ITEMNO,BID_DATE)
)
Directions: Indicate whether the statement is accepted or rejected; and if accepted indicate its effects. Evaluate each statement INDEPENDENTLY.
1) INSERT INTO ITEMS VALUES(1009, Red Bicycle,U01,1999-01-08, 1999-02-10, 30)
2) UPDATE ITEMS SET ITEMNO=1008 where ITEMNO=1001
3) DELETE FROM ITEMS WHERE ITEMNO=1005
4) INSERT INTO ITEMS VALUES(1010, Green Bicycle,U07,1999-01-08, 1999-02-10, 30)
5) UPDATE BIDS SET ITEMNO=1011 WHERE ITEMNO = 1001
6) DELETE FROM USERS WHERE USERID=U01
7) UPDATE ITEMS SET ITEMNO=1020 WHERE ITEMNO=1001
8) DELETE FROM BIDS WHERE BID > 1001
Thanks. I would greatly appreciate your help.
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Dec 7, 2007
My table structure is something like this :
ORDER_ITEM (OrderSK, ItemNumber, Qty, ServiceSK, UnitPrice)
SERVICE (ServiceSK, Description, UnitPrice)
How could I modify the database structure to enforce the data constraint that ORDER_ITEM.UnitPrice must be equal to SERVICE.UnitPrice for the corresponding service.
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Jan 23, 2004
i have a question about constraints in SQL server.
i have three tables:
Client
---------
clientID
name
etc...
Bank
-------
BankID (a virtual number, identity)
ClientID (FK: Client)
BankAccountNumber
BankName
Order
--------
OrderID
ClientID
BankID
a Client an have one or more bankAccounts.. if he place an order, he can select wich bankaccount will be used to pay.
how do i have to set the constraints so that the bankAccount in Order, is allways of THAT client in order.???
Thanx...
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Jul 17, 2004
I have to change someones username in my database in a couple of tables. When I try to make any changes, I get an error that there is a constraint. Is there a way to make the changes without removing all the constraints then replacing them?
Thanks
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Nov 30, 2001
Hi,
Just getting into scripting sql. I have a little script that adds and drops a default value for a column. But I cannot get it to run when the column already has a default value specified. If I didn't script the contraint and specify a name I have no name to specify when trying to drop it.
ALTER TABLE users ADD CONSTRAINT dev1 DEFAULT 1 FOR ns_email_flag
ALTER TABLE users DROP CONSTRAINT dev1
How do I remove any existing default values using script?
TIA,
Seoras.
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May 4, 2001
How does one know what a particular trigger or constraint is supposed to be doing on a table. I am just two days old on this position, and no form of documentation, at the same time I am expected to trouble-shoot some error messages. Thanks for your help.
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Sep 18, 2001
When I first set up my database, I set it up with many unique constraints, but not much in the way if indexes. After reading more about the benefits of indexes, I'm thinking of deleting many of the unique constraints, and replacing them with unique indexes where appropriate.
It seems that indexes would be better than unique constraints in many cases, because you have the double benefit of enforcing uniqueness, as well as improving sorting capability. Does this make sense?
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Apr 30, 2000
Hi folks,
Wonder if I'm onto something....everything I've read says that to drop foreign key constraints, you have to drop/recreate the table.
I've been able to dynamically create the ALTER TABLE statements for all FK constraints in a database. The way I did was a little convoluted (Access 97 linked tables and pass-through queries, cut/paste from the debug window to SQL7 QA), but it does work. More importantly, it saves the hassle of dropping/recreating tables....Someone with more expertise than I in using nested cursors could probably convert it to pure T-SQL pretty easily.
Just curious...opinions? Be glad to post the code here if that's appropriate.
Dan
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Dec 1, 2000
How do i create a check constraints on column a so it dose not accept $ character? syntax pls.
Thanks
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Sep 25, 2002
Can anyone recommend a good article/book on the subject? I am trying to find out more about compound primary keys. How many is “too many”? Does the number of primary key columns affect your performance? If so, how does it affect it? Should some of the constraints be handled from stored procedures?
Any response is greatly appreciated.
:cool:
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Dec 29, 2006
Executed as user: companyadmin user. Violation of PRIMARY KEY constraint 'PK_tblRMAProduct'. Cannot insert duplicate key in object 'tblRMAProduct'. [SQLSTATE 23000] (Error 2627) The statement has been terminated. [SQLSTATE 01000] (Error 3621). The step failed.
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May 4, 2002
Hi,
I am developing a database for my company in SQL server 2000 and I have some
few problems.
Firstly.
I have a customers table and orders table in my DB:
Customers Orders
--------- ------
CustID (primary key) ----------------< CustID
. ^ ProductID
. | Quantity
. | .
. | .
etc. | etc.
|
relationship
(one to many)
What I want to do is:
1) to be able to delete a Customer and automaticaly SQL server delete all the
orders that this customer done from the Orders table.
2) If for some reason the CustomerID changes, SQL should be able to
automaticaly update the necessary fields with the new values in the Orders
table.
Finally, 3) I want to be able to insert a new customer that has an order
and update both the Customers table and Orders table automaticaly. e.g
CustID Name Address ProductID Quantity etc.
------ ---- ------- --------- -------- ----
10-003 John London 33-25 2 ...
Such a kind of insert should add automaticaly the following entries in the
two tables:
Customers Orders
--------- ------
CustID (10-003) CustID (10-003)
Name (John) ProductID (33-25)
Address(London) Quantity (2)
. .
. .
etc. etc.
A friend of mine told me that this can be done using Foreign Check constraints
in SQL server. But I do not know what to do.
Can anybody help me please?
Thank you very much.
Efthymios Kalyviotis
ekalyviotis@comerclub.gr
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May 20, 2002
I have a question regarding the use of check constraints. I see how to set it up to make sure a value entered is one of a list using this syntax:
([eft_vc] = 'No' or [eft_vc] = 'Yes')
However, rather than have to hard code the allowable values, I'd like to have them read off another table. The logic would be as follows:
([eft_vc] in (select * from eft_t))
When I try to put this in, I get a message saying that constraints do not support subqueries. Does anyone know of a way around this?
thank you,
Darell
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Nov 1, 2001
What is the difference between creating a Unique Constraint and Unique Index? How does creating Index/Constraint affect my performance and db size?
Thank you.
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Jul 4, 2004
Can someone help me with this check constraint. I'm trying to get it runned on MS SQL Server but it seems the syntax isn't correct
check((Derived_Val=0) or ((select count(*) from Stage_One where Task=U_Id and Quantity is null)=0))
Thanx
j2dizzo
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