I am testing Insert, Update etc. and messing up my database with "dirty" data. Is there a way to temporarily drop FOREIGN KEY constraints to truncate a table after testing without dropping the whole table and rebuilding it?
Newbie
Guys,
I have 600 tables in my database, out of which 40 tables are look up value tables. I want generate truncate scripts which truncates all the tables in order of Parent child relationship excluding lookup tables. Is there any way to do this apart from figuring out Parent Child relationship and then writing the truncate statements for each of the table.
For example
EmployeeDetail table references Employee table
DepartmentDetail table references Department table
Department table references Employee table
My truncate script should be
TRUNCATE TABLE DEPARTMENTDETAIL
TRUNCATE TABLE EMPLOYEEDETAIL
TRUNCATE TABLE DEPARTMENT
TRUNCATE TABLE EMPLOYEE
Is there any automated way to figure out parent and child tables and generate truncate script for the same.
Thanks
Assuming that I have created relationships (PKs and FKs) on my tables already, does the following statement permanently remove a Foreign Key constraint, or does it mearly disable it?ALTER TABLE myTable NOCHECK CONSTRAINT FK_myForeignKeyGO Also, I can't seem to find out how to temporarily remove the Identity qualifier of a field, and then reset it back as Identity later. Any help?Finally, will a failure of ALTER TABLE affect the @@ERROR variable? Can I check @@ERROR after each ALTER TABLE table statement to see if @@ERROR <> 0?The reason for both of these issues is that I am redesigning an unnormalized database, and I need to write a large script to drop all constraints on all tables, transform the data as normalized into the new table structure, and then re-enable constraints, Identity fields, etc. Thanks.
View 3 Replies View Related Here is my issue I am new to 2005 sql server, and am trying to take my old data which is exported to a txt file and import it to tables in sql. The older database is non relational, and I had made several exports for the way I want to build my tables. I built my packages fine and everything is working until I start building relationships. I remove my foreign key and the table with the primary key will get updated for the package again. I need to update the data daily into sql, and once in it will only be update from the package until the database is moved over.
It will run and update with a primary key until I add a foreign key to another database.
Here is my error when running the package when table 2 has a foreign key.
[Execute SQL Task] Error: Executing the query "TRUNCATE TABLE [consumer].[dbo].[Client] " failed with the following error: "Cannot truncate table 'consumer.dbo.Client' because it is being referenced by a FOREIGN KEY constraint.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
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.
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.
Am working on sql database table shifting to new database tables. Am getting the following error while truncating the tables:-
Cannot truncate table 'orderItem' because it is being referenced by a FOREIGN KEY constraint.How can i remove all the items in the table if i found this error.
Hi
We used to used Sql Server 2000 DTS to perform daily backups to remote servers very successfully but just cannot do the same with SSIS.
I set my Transfer Sql Transfer Objects Task to use the following settings:
CopyData = true
ObjectsTocopy = All Tables
As soon as it hits a table that has a foreign key, I get the following error:
"Truncate data failed for Table nnn"
I've tried setting DropObjectsFirst = True but this fails too with foreign key violations.
First of all, am I doing something obviously wrong? Is SSIS not smart enough to drop tables in the right order so that we don't get foreign key violations?
Am I totally barking up the wrong tree with this and can anyone suggest a better way of doing remote backups?
Kind regards
Ben
I'm working on creating a new version of an existing table. I want to keep the old table around, only with a different name. In looking this up I found there's a system routine named sp_rename, which looks like it will work fine.However in thinking about this I realized that the foreign key constraints defined on the table (there's 3 of them) are likely to not be renamed, correct?
If I'm correct, then I suppose I could rename the table, then drop the 3 foreign key constraints, and create them new using different names for those foreign key constraints.
How to copy a table from one server to another server with primary and foreign key constraints.
View 5 Replies View RelatedHow 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]...
Kinda new to SQL, using SQL Server 2005.I have some foreign keys in a couple of tables. I need to drop thesetables, but can't since I'll get the error:Msg 3726,Level 16, State 1, Line 1Could not drop object 'Client' because it is referenced by a FOREIGNKEY constraint.I'm not sure how to disable or get rid of these foreign keys so that Ican drop my tables. I tried:ALTER TABLE Client NOCHECK CONSTRAINT ALLAlter Table Client Drop Column Foreign Key Boss_ID;I went into the Object Explorer and deleted the FK lines from eachtable, but still the same error.What am I doing wrong?Thanks for your help.
View 1 Replies View RelatedI am trying to get some information to compare and contrast theTruncate Table function and the Drop Table function. I know thatusing Truncate Table is faster and saves the structure of the tablewhile the Drop Table will delete the table totally (data andstructure). My question is whether using one function over the otherwill use up more capacity on the server?Ed
View 2 Replies View RelatedHi all
i have a problem.
i have this method
protected void DeleteDataFirstAccess()
{
SqlCommand cmd = new SqlCommand();
cmd.Connection = conn;
cmd.CommandText = "select name from sys.all_objects where type='U'";
DataTable table = DataBase.GetDatatable(cmd); //this is one of my method wich return a datatable with data
foreach (DataRow row in table.Rows)
{
SqlCommand cmd_delete = new SqlCommand();
cmd_delete.CommandText = "TRUNCATE TABLE " + row[0].ToString();
cmd_delete.Connection = conn;
cmd_delete.ExecuteNonQuery();
cmd_delete.Dispose();
}
cmd.Dispose();
}
when i run i have an error with some tables constraints.
As you know If we try to TRUNCATE a table, and the table is have a relationship with other table like for exemple Employees_Salary with the constraint of SQL Foreign Key then we can't TRUNCATE the table with SQL Truncate Table command, we need to TRUNCATE the Employees_Salary table first because Employees_Salary is depending on it and that is having some records. That's why we need to TRUNCATE both tables and the sequence is to empty that table which is based on SQL Foreign Key or remove this constraint first.
What i need is a list of all database tables ordered by the right sequence considering the constraints
Anyone can help me?
thanks in advance
bye
Marco
I have two tables, T1 and T2.T1 has a foreign Key that refers to a key in T2.The way that I see it, its only possible to insert something into T1 ifthere already exists a tuple in T2 with the same value in key.That means that I always have to insert something into T2 before insertinginto T1Is that correct?
View 1 Replies View RelatedI have a situation where attending a meeting could be either staff orcoalition members. But don't know how to enforce a foreign keyconstraint. any ideas ?Table MeetingMeetingID int NOT NULL,AttendeeID int NOT NULLPrimary Key (MeetingID, AttendeeID)Table StaffStaffID int IDENTITY not null PRIMARY KEYTable CoalitionMemberMemberID int Identity not null PRIMARY KEYSince AttendeeID can either a value from Staff.StaffID or fromCoalitionMember.MemberID, I cannot place both constraints asADD CONSTRAINT [FK_Meeting_Staff] FOREIGN KEY(AttendeeID)REFERENCES [Staff] ([StaffID])ADD CONSTRAINT [FK_Meeting_CoalitionMember] FOREIGN KEY(AttendeeID)REFERENCES [CoalitionMember] ([MemberID])
View 1 Replies View RelatedWhen following a script to create some tables and constraints, it is recommended that you name the FK constraint? Otherwise it appears with numbers after it. Is this the way 2005 creates them or has this always been the naming convention?
kat
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
Hello all,
Simple question. I have two table with a foreign key in between.
Then if I want to truncate the tables, of course this is not possible because of foreign key. But with the following code, this should work:
EXEC sp_msforeachtable 'ALTER TABLE ? NOCHECK CONSTRAINT ALL'
GO
truncate table Table_1
truncate table Table_2
GO
EXEC sp_msforeachtable 'ALTER TABLE ? CHECK CONSTRAINT ALL'
GO
But I still have the error
Msg 4712, Level 16, State 1, Line 2
Cannot truncate table 'Table_2' because it is being referenced by a FOREIGN KEY constraint.
What is wrong ?
You will find below the code for the creation of my two tables
Thanks for your help
CREATE TABLE [dbo].[Table_1](
[ID] [int] NOT NULL,
[foreignId] [int] NOT NULL,
CONSTRAINT [PK_Table_1] PRIMARY KEY CLUSTERED
(
[ID] ASC
)WITH (PAD_INDEX = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO
CREATE TABLE [dbo].[Table_2](
[Id] [int] NOT NULL,
CONSTRAINT [PK_Table_2] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Table_1] WITH NOCHECK ADD CONSTRAINT [FK_Table_1_Table_2] FOREIGN KEY([foreignId])
REFERENCES [dbo].[Table_2] ([Id])
GO
ALTER TABLE [dbo].[Table_1] CHECK CONSTRAINT [FK_Table_1_Table_2]
I work with datafiles containing more than 1 million records. Which would be faster DROP TABLE or TRUNCATE TABLE?
View 16 Replies View RelatedI want to disable foreign key constraints en mass. Is there a way to do this?
I know that I can go into each table and navigate to the Relationship tab of Properties and uncheck the "Enforce relationship for INSERTs and UPDATEs" box, but I'd much prefer to automate this process with a query since there are 160+ tables and probably 200+ relationships to disable.
I figure that sysconstraints my be the ticket, but I will keep experimenting until I get the right solution. In the meantime, any insight to steer me in the right direction is appreciated.
Hi All,
I know that when you specify a PRIMARY KEY or UNIQUE constraint for a table, SQL Server creates a unique index for the primary key columns.
What about foreign keys? Does SQL Server creates an index when you create a foreign key?
I have looked in Books Online and on the Internet, but couldn't find any information.
Thanks in advance.
I've recently implemented a whole bunch of foreign key constraints in a database. As a result I have issues every time I want to truncate a table to perform data loads.
Is there an easy way to tell the system to ignore these constraints for the term of a data load or truncation of data?
thank you
Hi All,
I know that when you specify a PRIMARY KEY or UNIQUE constraint for a table, SQL Server creates a unique index for the primary key columns.
What about foreign keys? Does SQL Server creates an index when you create a foreign key?
I have looked in Books Online and on the Internet, but couldn't find any information.
Thanks in advance.
I have recently restored an SQL Server 2000 database on SQL Server 2005
A number of constraints on the database had previously been disabled
A monthly process that is carried out, imports data into 'Table A'.
This process now crashed, being unable to truncate table as it referenced by 'Table B'
Although when i check the properties of the constraint the 'enforce foreign key constraints' is set to no.
Is there a known issue with restoring databases on 2005,
Any help greatly appreciated.
Micheal
I have a table that I want to run an UPDATE statement to change some data in the table, but I get this error:
Server: Msg 547, Level 16, State 1, Line 1
UPDATE statement conflicted with COLUMN FOREIGN KEY constraint 'FK__Yield__Financial_Product__ProductCode'. The conflict occurred in database 'lsmdb', table 'Financial_Product', column 'ProductCode'.
The statement has been terminated.
How do I update the ProductCode column in both tables to reflect my updated data?
Thanks in advance.
CREATE TABLE IssueLog (
ItemNo int NOT NULL IDENTITY PRIMARY KEY
REFERENCES IssueProgress (ItemNo)
ON UPDATE CASCADE
ON DELETE CASCADE,
REFERENCES Approvals(ItemNo)
ON UPDATE CASCADE
ON DELETE SET NULL,
Msg 142, Level 15, State 2, Line 0
Incorrect syntax for definition of the 'TABLE' constraint.
I'd like to update or delete the IssueProgress plus update and setting null to the Approvals tables at the same time whenever the ItemNo of the parent table namely IssueLog is updated or deleted.
How can I achieve this?
How can I get and or set the order in which the cascading deletes of a table are executed??
I have table A with cascading deletes to Table B and Table C. Records in table B can not be deleted if they are referenced from table C. So if I delete C, then B and then A; that would work. But B then C and then A might be prohibited due to the constraint between B and C. Therefor the order of execution of the cascading delete is important.
Guys,
I have 600 tables in my database, out of which 40 tables are look up value tables. I want generate truncate scripts which truncates all the tables in order of Parent child relationship excluding lookup tables. Is there any way to do this apart from figuring out Parent Child relationship and then writing the truncate statements for each of the table.
For example
EmployeeDetail table references Employee table
DepartmentDetail table references Department table
Department table references Employee table
My truncate script should be
TRUNCATE TABLE DEPARTMENTDETAIL
TRUNCATE TABLE EMPLOYEEDETAIL
TRUNCATE TABLE DEPARTMENT
TRUNCATE TABLE EMPLOYEE
IS there any automated way to figure out parent and child tables and generate truncate script for the same.
Thanks
I want to replicate the foreign keys to secondary.I changed the value Copy foreign key constraints value is to True.
I changed this value at pub properties - Articles -
And then it is asking for MARK for reinitialization with the new snapshot.I clicked ok.
When I checked sync status it has given the message like initial snapshot is not yet available.I started the snapshot and the subscription started replication records.When check at pup properties the value Copy foreign key constraints again false.
After changing the value to true it is showing as False.
Ok, so I've broken down and decided to write myself an invoicing
program. I'd like to use GUID fields as the Primary Keys in my
table. Now, I basicly bill for two seperate items:
Deliverables and Services.
So, my Layout's gonna look something like
Create Table Invoice(
ID UniqueIdentifier Primary Key,
-- Other Data
);
Create Deliverable(
ID uniqueidentifier Primary Key,
ParentInvoice uniqueidentifier,
-- Other data);
--...
Im sure there are probems with that as it's written feel free to edify me as to what they are.
my questions are such:
1) Does a uniqueidentifier field automagically get a value?
2) If not how do I generate one in TSQL?
3) If so, what do I use to store my Foreign Keys.
4) How do I declare my Foreign key constraints?
Hello,
I need to retrieve all the information about all the foreign key constraints,inorder to store them temporarily (to be deleted later)and then recreated after making the necessary modifications to the concerned tables.
The stored proc sp_helpconstraint shows all the constraint types, their user-defined or system-supplied name, the columns on which they have been defined, and the expression that defines them.But I don't know whether it can be manipulated to get what I want.I need to get it done programmatically..so that I can integrate it in my program which I'm building up progressively.
Any help or scripts would be appreciated!
I want to delete a table.This table is created with foreign key.How to remove foreign key.
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