Truncate Table
Nov 1, 2000
hi, I have two tables members table and orders table.
I have 2 records in members table and zero records in order table.
When I try to truncate members table I get an error message.
cannot truncate table members,because it is being referenced by a FOREIGN KEY constraint.
this what blows my head, There is no records in orders table. so why would the constraint enforced when there is no data in the order table. I created same table in access and I was able to delete a member from the members table. any comments.
thanks
Ahmed
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Aug 23, 2006
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.
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Jul 4, 2007
i did a Stored Procedure to truncate a table. it contains lots of crap from testing the site. just a simple 1 ALTER PROCEDURE dbo.TruncateUploads
AS
TRUNCATE TABLE Uploads but it says "Cannot truncate table 'Uploads' because it is being referenced by a FOREIGN KEY constraint." then i make NULL all foreign keys and try still cannot. then i did it manually deleting all records then can! but why can't i truncate it? isn't it the same as removing all values plus having the primary keys to start from 0?
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Oct 27, 2007
How can i TRUNCATE my table (removes rows that were produced at testing), so that in the actual running the automated IDNumber for my table start with 1.
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Feb 1, 2005
I have several very large tables and sometimes I need to clean them.
It's known that TRUNCATE TABLE works much faster than DELETE, but impossible to use TRUNCATE TABLE on a table referenced by a FOREIGN KEY constraint... Is it possible temporary disable (not delete) constraints and after complition of TRUNCATE enable them ?
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Feb 10, 2005
Hi,
(From Bol)
"You Cannot Use Truncate Table On A Table Referenced By A Foreign Key
Constraint;"
1) States
Statecode TinyintPrimary Key
Statename Varchar(25)
2) Rivers
RivercodeSmallint Primary Key
RivernameVarchar(40)
3) Riverinstates
StatecodeTinyint,
RivercodeSmallint,
Constraint Pkriverinstates Primary Key(Statecode,Rivercode),
Constraint Fkriverinstates
Foreign Key (Statecode) References States(Statecode),
Foreign Key (Rivercode) References Rivers(Rivercode)
after removing all rows from RiverInStates Table using TRUNCATE and the command completed successfully.
when i tried to remove all rows from Rivers table , i got the following error.
"Server: Msg 4712, Level 16, State 1, Line 76
Cannot truncate table 'rivers' because it is being referenced by a FOREIGN
KEY constraint."
i thought the error may be due to the "Fkriverinstates" FOREIGN KEY CONSTRAINT. so i DROPped the constraint with
ALTER TABLE RiverinStates DROP CONSTRAINT Fkriverinstates
even after DROPping the constraint, im getting the same error
can any one point out where the problem is?
thanks in advance
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May 18, 2004
what is the best way to truncate/delete records from a table at a certain time of the day...... i'm sure this is a simple ?, but i'm still learning sql.
thanks,
eddie
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Jan 18, 2007
any idea why this is not wroking ?
------------------------------
declare
@TableName varchar
DECLARE
EmptyTables CURSOR FOR
Select Table_Name From Information_Schema.Tables
Where Table_Type = 'Base Table' Order By Table_Type
open EmptyTables
FETCH NEXT FROM
EmptyTables
into
@TableName
WHILE @@FETCH_STATUS = 0
BEGIN
truncate table @TableName
FETCH NEXT FROM
EmptyTables
into
@TableName
END
close EmptyTables
deallocate EmptyTables
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Nov 16, 2006
I have a database of 25 GB. I truncated a table which holds around 5 GB of data.
Even after truncation, I see my database size as 25 GB...
Should I run a shrink database after the truncation?
Thanks
Santhosh
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Jul 16, 2001
I have somme users who need to truncate some tables owned by DBO. I know that only table owner or DBO can execute TRUNCATE TABLE but I don't want grant DBO permission to those users. Do you have any suggestion ? Thanks a lot.
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Jul 23, 2001
If I have a truncate table statement in a stored proc, will my log backups be compromised due to the nonlogged operations. If so, what are my alternatives in case that I need to restore? Differential backups?
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Apr 13, 2000
I am doing the following-
begin transaction
truncate table Acounts
select * from Accounts
rollback
select * from Accounts
The first select is returning 0 rows as expected. But after doing the rollback I expected to yet see 0 rows as truncate is not logged so cannot be rolled back. But to my suprise I see that there are rows.
So the rollback is rolling back the truncate table statement. Can someone please explain this????
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Mar 17, 2000
I know that only the owner of a table can truncate it.
I want a user to run a procedure that truncates a table. Both the procedure and the table are owned by dbo, however the system says that the user can't truncate the tables because she doesn't have permission. The user has dataread and datawrite global permissions, and I do not want to give her dbo perimssions.
Is there a solution to this?
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Aug 12, 1998
Hi all,
Is it possible to TRUNCATE a table and BCP data into the same table in one
TRANSACTION?
My problem is that I want to refresh(delete and via BCP append new data) a
table without disturbing running applications. Can I run BCP from a
SQL-script or a stored procedure?
Thank`s
Jonas Dahlqvist
Alfa Laval Automation AB
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Mar 22, 2006
Does anybody know of a way to allow non-administrators to execute the truncate table statement?
I have developers that from time to time need to move data between their databases usinge the DTS wizard. Most of their tables have identity columns and in order retain the identity seed, they need to click on the option to enable identity insert. This option isn't available to non administrators.
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Jul 2, 2002
Error Message "Cannot TRUNCATE TABLE 'HR.dbo.Employee' ".
All of a sudden (!) I began to get this error whle attempting to run a multi-step job: This is during a very simple T-SQL statement.
Executed as user: EPRODSQLAdmin. Cannot TRUNCATE TABLE 'HR.dbo.Employee' because it is being referenced by object 'v_apps_Employee'. [SQLSTATE 42000] (Error 3729). The step failed.
Tables are being referenced by views all the time... Why would I begin to get this message?
The only thing I can think of is that I had just made my first "indexed view" ever, and it is in this database. Could that be related to the new error message?
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Jun 3, 2008
hi
Can We Use Truncate Command on a table which is Refernced by Foreign Key?
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Mar 13, 2007
HI,
I am trying to find a replication solution. It does not have to be real-time, but snapshot will not work since the database is too big. I was trying to configure Transactional replication. The replication itself worked good, but the Truncate table is not allowed in the transactional replication and merge replication. We have to use "Truncate table" in another processes during replication. Is there any other option or third party application I can use to do the replication with truncate table working. I tried Replication Exec, but it does not support 64bit system, which we have.
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Nov 23, 2005
Hi group,In one of the books 'Gurus Guide to Transact SQL' i found this info:------------------------------------------------------------TRUNCATE TABLE empties a table without logging row deletions in thetransaction log. It can't be used withtables referenced by FOREIGN KEY constraints, and it invalidates thetransaction log for the entire database.Once the transaction log has been invalidated, it can't be backed upuntil the next full database backup.------------------------------------------------------------Does it mean that the log backup taken after table truncation is aninvalid backup?Help me! i'm lost....Thanks in advanceRonin*** Sent via Developersdex http://www.developersdex.com ***
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Jan 26, 2006
Hi,I am trying to create a script that deletes transaction tables and leavesmaster data like customer, vendors, inventory items, etc. How can I useTRUNCATE TABLE with an Exists? My problem is I have 200+ tables, if Isimply use a list like:truncate table01truncate table02truncate table03....I get errors if the table does not exist and have to manually run thetruncate statements. Some tables may not exist if that part of the app isnever used. I'm trying to make a list of all tables that could existwithout it erroring out 50+ times.Thanks in advance.
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Nov 26, 2007
I have a cursor looping through a list of tables that I want totruncate and then do a bulk insert into, Is this possible in SQLServer 2000 or do script each table individually.Cheers,Adam
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Jul 20, 2005
Hi,We have a heavily used production server and a table which logs everyhit on a web site. This table has grown large over time and we want toclear it down as efficiently as possible. We would like to issue atruncate table statement, but with millions of rows we are a bit waryof how this will affect server performance. The alternative is todelete is stages using rowcount but of course this will generate alarge amount of logging.Can anyone confirm whether issuing a truncate table will have anyaffect on performance - i.e. does it just clear a header block ordooes it have to do more?CheersMartin
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Jun 1, 2007
Hi ,
I truncate and Delete the table. What is the differnce between following :
Trunacate table employee_master
delete from employee_master
I heared that After delete records from table through
"delete from employee_master"
data can be rollback using log file,But How ?
Waiting for response............
Regards
Nikhil Chaturvedi
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Jun 27, 2007
Hi,
I need to truncate the Destination table every time before the data is loaded.
I had checked out in OLE DB Destination properties but couldn€™t find any information on truncate table.
EXP:
In INFORMATICA we have a properties setting for truncating the table every time the data get loaded.
I€™m looking for this option in SSIS can any one guide me on this.
Thank you,
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Nov 28, 2006
I have just updated to SQL server Everywhere(Compact) version from SQL Server Mobile. A desktop application was using several features of the Mobile version which no longer seem to be available in the Everywhere version. 'Truncate Table' does not work. This can be worked around with deleting the rows and then changing the Identity seed value. Also 'INSERT INTO Table1 SELECT * FROM Table2 no longer works in SQL Everywhere. Now the number of columns in the two tables must match exactly or a list of columns must be provided with the INSERT and SELECT statements. The biggest probem I have run into so far is that 'SELECT * INTO Table1 FROM Table2' no longer works. How can a new table be created without manually recreating all of the column information?
These functions worked in the SQL Mobile version, why was this functionally removed in the latest Everywhere(Compact) version.
Is there a listing of what is supported in the Everywhere(Compact) version, besides digging through the BOL documentation.
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Apr 1, 2008
Hi All,
I had a situation today where I needed to truncate a table. It has an index on it.
When I truncate it directly, it takes hardly a minute but when I drop the existing index on that table and then truncate, it takes ages. I am not able to comprehend the exact reason. Can anybody explain?
Thanks in advance.
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Sep 29, 2006
Hello,
I am running SQL Server 2005 SP1. Whenever I issue a 'truncate' query to the DB engine it fails if the table to be modified is currently referenced by a foreign key constraint.
A code snippet (T-SQL) that demonstrates the problem is beneath.
Does anybody know a fix-it?
Thanks in advance,
Intenion
USE tempdb
Go
-- Clearing the 'tmpdb' database
IF OBJECT_ID('user') IS NOT NULL
DROP TABLE [user];
IF OBJECT_ID('address') IS NOT NULL
DROP TABLE address;
-- Creating tables: 'address' and 'user'
CREATE TABLE address
(
id INT IDENTITY (0, 1) CONSTRAINT pk_address PRIMARY KEY,
zip SMALLINT NOT NULL CONSTRAINT chk_zip CHECK (zip > 0),
street NVARCHAR(50) NOT NULL CONSTRAINT chk_street CHECK (LEN(street) > 0),
number SMALLINT NOT NULL CONSTRAINT chk_number CHECK (number > 0)
CONSTRAINT unq_address UNIQUE (zip, street, number)
);
Go
CREATE TABLE [user]
(
email VARCHAR(50) CONSTRAINT pk_user PRIMARY KEY,
address INT NULL CONSTRAINT fk_user_address FOREIGN KEY REFERENCES address (id) ON DELETE SET NULL
);
Go
-- Populating tables
INSERT INTO address VALUES (2365, 'street 1', 2);
INSERT INTO address VALUES (23369, 'street 2', 2);
Go
INSERT INTO [user] VALUES ('someone@isp.net', 0);
INSERT INTO [user] VALUES ('somebody@isp-r-us.com', 1);
Go
-- Truncate query that fails
TRUNCATE TABLE address;
-- Delete query that passes
--DELETE address;
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Mar 13, 2007
I am trying to find a replication solution. It does not have to be real-time, but snapshot will not work since the database is too big. I was trying to configure Transactional replication. The replication itself worked good, but the Truncate table is not allowed in the transactional replication and merge replication. We have to use "Truncate table" in another processes during replication. Is there any other option or third party application I can use to do the replication with truncate table working. I tried Replication Exec, but it does not support 64bit system, which we have.
Thanks
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May 15, 2008
Hi,
I am facing some issue in SQL 2005. There are five tables and tables having foreign check constrainst to child and parent relationship.
Now the issues is that i am able to delete the table in order wise and i am not able to truncate the all the tables in the same order.
Msg 4712, Level 16, State 1, Line 1
Cannot truncate table 'dbo.Tb_to_Markets' because it is being referenced by a FOREIGN KEY constraint.
But the same table i am delete it.
what can be cause for this error.
Thanks,
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Oct 4, 2013
I have never created a stored procedure before so Not even sure what i am trying to do is even viable
Aim – Create a stored procedure which truncates a table at a certain time of the day
Table name Dan.Stg_Jitter_Opp want to truncate table at 11am
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Nov 14, 2007
Hi all,
We have a table with 15 Partitions in SQL Server.Can i write a stored procedure or an SQL statement just to truncate a particular partition by passing the partition name.
Any Suggestions??????????
Thanks
Chow.
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May 15, 2006
Can one use Truncate Table on a linked server table? When I try it, I get amessage that only two prefixes are allowed. Here's what I'm using:Truncate Table svrname.dbname.dbo.tablename
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Jul 20, 2005
I 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
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