Hi,
I have a table with multiple column and has millions of rows in it(say about 50 millions ) and its in production.
What is the best way of dropping the a column from the table without impacting the systems performance. Remeber this table will be used some application to get some data out of it.
~Mohan
Whats the quickest way to drop a column from a table with 1 million rows.
This is for SQL Server 6.5
Thanks for all the responses,
Chan
Hi,
I'm creating a VB program that does some DB manipulations.
I need a programmatic to drop the Identity property (not the column data) so that the field will be just an Integer with the old data...
It seems like the only way is the EM way (creating a temp table with no identity on the column, copying the data into it, deleting the old table, and re-naming the temp...)
I'm looking for a more inovative way, or possibly a way to automate the process (so I'll be able to do this for all tables in a database in a modular way).
Thanks a bunch
Moshe
Can anyone tell me how to change the datatype of a column.
Without dropping and recreating the table...
The table is empty...
THNK YOU VERY MUCH...
I am trying to drop the "allow nulls" characteristics on an existing table
column. I know that there are not Nulls currently in this column, nor will
there ever be. How do I get rid of that "allow nulls" checkmark on an
existing table structure? Thanks, Craig.
I have a query that produces unique rows. However, some of the unique rows have the column called testname that has the same test listed more than once. All I want to do is drop the older testname and keep the testdate column.
Select
Distinct
TestID,
TestDate,
TestName
From third.test
I want to keep testdate in the query....guessing I need to put in to a temp table then drop the oldest one somehow by doing a subquery using Select Max....
Hello,A while back I dropped a text column from a SQL Server 7 databaseroughly 3GB in size. I expected the size of the database to decreaseby around 1GB, but no change occurred. After searching usenet, Idiscovered that SQL Server 7 has no way of reclaiming that space, butthat there is some command that can be run in SQL Server 2000 thatwill reclaim it.I have since migrated this database to SQL Server 2000, and am nowtrying to figure out what that command is, but cannot locate anyusenet posts about it... also tried searching books online, but can'tfind anything that way either.Does anyone know what I should run?Thanks,Tom
View 6 Replies View RelatedHow do i drop/remove the identity property for an existing column in all Tables where the Identity column is a primary key.
The Script below was used to find all the tables that have an Identity Column as a primary key in a database. Now i want to remove the identity property from the Identity Columns that have a primary key in the database.
select pk.table_name, c.column_name,
from information_schema.table_constraints pk
INNER JOIN information_schema.key_column_usage c ON c.TABLE_NAME = pk.TABLE_NAME
and c.constraint_name = pk.constraint_name
where constraint_type = 'PRIMARY KEY'
and COLUMNPROPERTY(object_id(pk.table_name), column_name, 'IsIdentity') = 1
ORDER BY pk.table_name, c.column_name
I have created a table as below mentioned. Then I want to alter the ID column as identity(1,1) without dropping the table as well as losing the data.
create table dbo.IdentityTest
(
id int not null,
descript varchar(255) null,
T_date datetime not null
)
Is there a way we can prevent a object owner from dropping his tables. Example:
There is a user called 'tom' who is given create table permissions, 'tom' creates the table completes his dev and then the table is moved into production where 'tom' is still the owner. However, in production, 'tom' does not have the create table privs. Because 'tom' is the owner of the table, he is still able to drop the table in production. This is what I am trying to avoid. I would like to retain 'tom' as the owner and want to take away his create/drop privs.
Does anyone have any generic scripts that Drop all the statistics that SQL auto generates?? I have hundreds of '_WA_....'
indicies that are auto created by SS7 and I just want to get rid of ALL of them. Thanks!
Simple heres the syntax Alter Table XX Drop PRIMARY KEY.
This is not working whats up?
Thanks,
Phil
I need to drop a database but cannot because there are 2 open connections that I cannot drop via EM. Is there a way to do this without starting and stopping??
View 2 Replies View RelatedHi,
I`m new at SQL Server so excuse me if this question sounds dumb.
Does anybody know how to drop columns in a table. I know I can drop and re-build the table,
but I would prefer and easier way.
Thanks
-Z
Hi,
After I drop the database, I backed up the master database, I recreate the database with new name. When I tried to do the import on the command level,
It gives me the error:
Attempt to locate entry in the sysdatabases for database 'db1' by name,
failed -- no entry found in that name.
What should I do? Thanks.
I have run the following script to create a default on a table:
alter table TableXYY
add default 0 for ColumnX
Now, how do I delete this default (without re-creating the table)??
Thanks
Anyone know how to drop all users associated with a particular login not matter what database they're contained in?
ie login AdminUser / User AdminUser (in databases master, Dev1)
....
Thus, is there a way to drop the AdminUser login above and associated user
AdminUser in databases master, Dev1 in example above.
Thanks
Hi friends,
How I can drop a database insatance from a different server ( data base is SQL Server 2005) from my code
Hoping a early reply ....
Thanks :)
Hi
I am using SQL server 7 database and ASP as front end. I run an application where a text file is loaded into database. After this is done procedures are run to create a set of tables that have snapshots of the data in the text file.. each time i load a new text file i want to create the snapshots.. i hve written a stored procedure to create tables and insert values into the tables.. however how do i delete the tables i created the previous time.. the number of snapshots and their names will depend on the size of the text file.. how do i refer to all the snapshots created and drop them all before creating new ones?
plese guide
regds
Looking for suggestions.
I have a database that is giving me a bad Index error. When I go to drop the necessary Index it is telling me that it either does not exist or cannot be dropped. However when I try to build that index, it tells me one already exists.
Is there any way to drop all of the indexes or at the very least see what the indexes are? This particular database is using 2005 Express.
Any help would be great!
Shawn
How to remove the constraints on a table in sql server 2000? I need to drop the column, so i need to drop the constraint before that.
Alter Table Table_Name NO CHECK constraints ALL.
Once I execute the above one, it says, "Successfully Executed" but when I try to drop it doesnt allow me and gives me the following error:
Server: Msg 5074, Level 16, State 1, Line 1
The object 'DF_Users_Created_by' is dependent on column 'CREATED_BY'.
Server: Msg 4922, Level 16, State 1, Line 1
ALTER TABLE DROP COLUMN CREATED_BY failed because one or more objects access this column.
Any ideas?
Thanks,
I think the answer to this question will be something like 'you'll have to re-initialize the subscribers', but I need to ask anyway...
I created a publication where my foreign key constraint we NOT created with NOT FOR REPLICATION. My publication is configured to replicate DDL changes. Is there any way I can drop and re-create the constraint in the publisher and get replication to push the change to the subscribers?
Thanks for your help
Graham
I have trouble dropping a job that was a maintence plan.
I get the following error. Is there a way around this?
TITLE: Microsoft SQL Server Management Studio
------------------------------
Drop failed for Job 'Maintenne Plan'. (Microsoft.SqlServer.Smo)
An exception occurred while executing a Transact-SQL statement or batch. (Microsoft.SqlServer.ConnectionInfo)
------------------------------
The DELETE statement conflicted with the REFERENCE constraint "FK_subplan_job_id". The conflict occurred in database "msdb", table "dbo.sysmaintplan_subplans", column 'job_id'.
The statement has been terminated. (Microsoft SQL Server, Error: 547)
I am trying to run a dymanic DROP DATABASE <dbname> command in a stored procedure called from ASP.NET. I typically connect from the .net using a SQL builtin account. I am getting this error:
System.Data.SqlClient.SqlException: Cannot drop the database 'db_testco', because it does not exist or you do not have permission.
The database is there for sure asI can browse it via the Studio manager. What permission do I need to set for my .net login to allow it to drop ? I tried adding the Delete permission to the database and still no go...
Setup: SQL 2005 SP2 2 Node cluster.
Thanks.
I am having following issue recreating my service broker
This could be a trivial fix...
when i execute the following query..
open master key decryption by password = 'pass1234$'
alter master key drop encryption by password = 'pass1234$'
close master key
drop master key
go
I get the following result..
Msg 15558, Level 16, State 1, Line 3
Cannot drop encryption by password '********'.
Msg 15580, Level 16, State 1, Line 5
Cannot drop master key because certificate 'BackofficeServiceAccount' is encrypted by it.
But 'BackofficeServiceAccount' was already dropped.
Can any one help me how to drop master key?
I appreciate any input..
regards...
Hi:
I think I am doing something wrong. I am trying to make the trigger fire when I want to drop the same trigger. For example I have the following trigger defined:
USE AdventureWorks2000
GO
CREATE TRIGGER Incheckstock
ON DATABASE
FOR DROP_TRIGGER
AS
PRINT 'You must disable Trigger "Incheckstock" to drop Trigger!'
ROLLBACK
GO
SET ANSI_NULLS OFF
GO
SET QUOTED_IDENTIFIER OFF
GO
ENABLE TRIGGER Incheckstock ON DATABASE
DROP TRIGGER Incheckstock
ON DATABASE
I created the trigger Incheckstock and i want to see if the same trigger fires itself if when i am trying to drop the trigger with the same name (kind of recursive one). Is this possible in SQL 2005?. If I asked a dumb question, please correct me.
Thanks
I'm having a problem updating my Client profile table. I intially put
the data in with the "INSERT" SQL command that part works great. but
when I retrive the data to edit the profile it returns the correct
details and phone numbers. The problem is when I use the "UPDATE" SQL
command it saves all the data correctly except for the mobile phone
number which it drops off the last number all the time. Field sizes etc
are okay. Any help appreaciated
I guess nobodys heard of this? I'm using DTS to transform data to Excel spreadsheet. I have a DROP TABLE `data$` then a CREATE TABLE `data$` the old data is cleared but the new data is appended to the blank rows of the old data. So if I had 5 rows before now I have 10. And the new data has 5 blank rows before it.
I've tried deleting the excel file & replacing it with a new one.
I've used the wizard thinking it was me but no good, it still happens.
HELP!
I am using Access 2000 to link tables from SQL Server. The tables are linked using ODBC DSN`s. I am running a query to return some rows to Access, but once I have returned the rows, I want to drop the linked table connection to SQL Server, because it is locking a table on the server. I think I need to write a bit of VBA code, but I don`t know where to start. Any ideas would be greatly appreciated. Thanks.
View 1 Replies View RelatedSQL 7 created by default a clustered index on my primary key field. I would like to drop this index and recreate it on another field, but it is not allowing me. Error message states: "An explicit DROP INDEX is not allowed... It is being used for PRIMARY KEY CONSTRAINT enforcement." Can anybody advise how I can solve this? TIA
View 1 Replies View RelatedHi
Has anyone heard of MS SQL Server 7 dropping indexes?
I had created an index on a table. The next day
the index had disappeared. Has anyone expirienced such
a problem?
Thanks in advance
Winston
i would like to drop a distribution database after disabling both susbscriber and publisher .but i get a message saying distribution database is still in use .and as far as i can tell its there is no one using it .also stopped sql agent but no luck . and when i do select @@ servername i get servername is null how do i correct it .
thanks
Is there a way in SQL to drop any users from a database. I am trying to schedule some nightly DB maintenance and some users are still in there sometimes. I need to be able to kick the out to do dbcc checkdbs, etc. Is there a way for me to do this without stopping the SQL services?
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