Hi
I want to delete the Default value for a specific column which is set to Null
I've used
ALTER TABLE SYSTEMS_PATIENT_LOG ALTER COLUMN SYSTEMS_LOGID DROP DEFAULT
It is giving error
Msg 156, Level 15, State 1, Line 1
Incorrect syntax near the keyword 'DEFAULT'.
plz could any one tell me where I could be wrong
I've done some research on setting the default value of a column and found the following code:
ALTER TABLE [table1] ALTER COLUMN [column1] SET DEFAULT 0
I am trying to set column1 within table1 to a default value of 0, column1 is an int data type. But it doesn't work within MS SQL SERVER 2000.
Can anyone tell me what's wrong?
/* for the google index */ALTER TABLEDEFAULT COLUMNDEFAULT VALUEI've worked out several stored procedures for altering the default columnvalues in a table. They were compiled from books and code snippets foundhere. It was a pain to work out so I've decided to share my work andresearch here. This post is just my way of saying thanks to several othershere for posting with their wisdom and intelligence.MichaelsimpsonAT(dot)cts(dot)comThis procedure gets the constraint name. If you use the design view tosetup a default value, you won't know the system assigned constraint name.This proc makes it an non issue. This code was gleened from this newsgroup.CREATE PROCEDURE [DBO].[GetConstraintName](@tablename sysname,@columnName sysname,@constraintName sysname OUTPUT)asSELECT@constraintName = o1.nameFROMsysobjects o1INNER JOINsyscolumns c ON o1.id = c.cdefaultINNER JOINsysobjects o2 ON o1.parent_obj = o2.idWHERE (o2.name = @tablename) AND (c.name = @columnName)This procedure changes the default value for a column that is a numeric. Ituses the previously define stored procedure to get the constraint name. Atext version of this procedure can be created by removing the cast, definingthe input parameter "newConstraint" as varchar(255).CREATE PROCEDURE [dbo].[ChangeIntConstraint](@tableName sysname,@columnName sysname,@newConstraint int)ASDeclare @conName sysnameexec GetConstraintName @tableName, @columnName, @constraintName = @conNameOUTdeclare @sql nvarchar(1024)set @sql = 'ALTER TABLE ' + @tableName + ' drop constraint ' + @conNameexec(@sql)set @sql = 'ALTER TABLE ' + @tableName + ' ADD CONSTRAINT ' + @conName + 'DEFAULT (' + CAST(@newConstraint AS varchar(255)) + ') FOR ' + @columnNameexec(@sql)
View 3 Replies View RelatedI know that the correct syntax to set the default on a column in SQL Server 2005 is:
Alter Table <TableName> Add Constraint <ConstraintName> Default <DefaultValue> For <ColumnName>
But from what I can gather, the SQL-92 syntax is:
Alter Table <TableName> Alter Column <ColumnName> Set Default <DefaultValue>
This generates an error on SQL Server 2005.
Am I wrong about the standard syntax for this statement? If this is the standard, why doesn't SQL Server 2005 support it? I am trying to avoid code that will only work on certain database managers.
Thanks.
I have a integer column which has Default value alredy defined. How do i alter this column so that it's defult value will be removed. I want to do this using T-SQL statement. Not through design mode.
how can you alter a table so that you can add a default value whenever the field is NULL? for example, whenever the table is brought up in a query, NULL is replaced with UNKNOWN
View 1 Replies View RelatedI can't seem to get the syntax correct for ALTERing an existing column with a default constraint. I've been to Help and BOL. There are examples that show how to use the ALTER command to add a column with a default constraint but not how to do it on an existing column.
Any help would be appreciated.
Sidney Ives
How to set a default value to columns in table ..without dropping it.??
View 3 Replies View RelatedI have a default constratint on DateColumn getdate()-1
I have used enterprise manager to update it to yesterday's date everyday.
I would like to have a SQL which can check for the date in the system
or even a trigger which checks when the date changes the constraint is updated itself. If this is not possible I would like to have a stored procedure which I will schedule to run as a job everyday once.
So if today 6/12/2006, the default value in the Datecolumn should be
6/11/2006.
This gives me a error, i tried but could not fix the bug.
Alter Table TABLE_NAME
Alter Constraint DF_DATECOLUMN
Default getdate()-1
Ashley Rhodes
Hello,I have an SQL Server 2005 database that I'm trying to create using script.Everything works fine, but when I click on "Database Diagrams" I get anerror message that there is no database owner, and of course when I show theDatabase Properties, the database was created without one. Is there any wayto ALTER AUTHORIZATION to a default owner or system administrator, somethingvalid?Any direction would be appreciated.Thanks!Rick
View 1 Replies View Related
I have a integer column which has Default value alredy defined. How do i alter this column so that it's defult value will be removed. I want to do this using T-SQL statement. Not through design mode.
Hi:
I need to change a column's datatype from tinyint to int as follows:
alter table tableName
alter column column1 int
but with error <<'DF__LandMarks__color__6A50C1DA' is depending on it.>>
However, this old default is not part of the constraint. Thus, the only way is to delete it from sysobjects.
unfortunately, the following code I have to commented since they could only be executed line by line, not within a begin...end block.
--exec master.dbo.sp_configure 'allow updates', 1
--reconfigure with override
--delete from sysobjects
-- where name = 'DF__LandMarks__color__6A50C1DA'
-- and type = 'D'
--exec master.dbo.sp_configure 'allow updates', 0
--reconfigure with override
I need to update 10 server around 2500 databases with this change.
I have looked INFORMATION_SCHEMA related views, but not found default related, maybe I missed something.
thanks
David
I'd like to alter a table and add a column:
add_date datetime
Is there a way, in the ALTER statement, to have the value default to the current date -- GETDATE() -- anytime a row is inserted w/out an explicit value for the column.
Thx
I need to alter the datatype of a column from smallint to decimal (14,2) but the column was originally created with the following:
alter my_table
add col_1 smallintNot Null
constraint df_my_table__col_1 default 0
go
I want to keep the default constraint, but i get errors when I try to do the following to alter the datatype:
alter table my_table
alter column col_1 decimal(14,2)Not Null
go
Do I need to drop the constraint before I alter the column and then rebuild the constraint? An example would be helpful.
Thx
Hi
I am using this query to alter a table
ALTER TABLE myTable ADD age int NULL DEFAULT(0)
But above query is adding age field by storing Nulls but not with default values
So I need to add age field to the table by storing default value as 0 and by allowing Nulls
Please advice
Thanks
I'm trying to write some code that will alter column to change its type, in this case from Nvarchar to Int, but I'm not sure if there will be any columns that are uncovertable (say, there's a string that does not have an Int value). In this case, I'd like it to default to 0. Is there a way to write a T-SQL statement to do this, or will I have to write an UPDATE stamement first to clear out any problem cases?
View 1 Replies View RelatedHi all, I am trying to do a very basic ALTER Command and am trying to change its DEFAULT value. Code below is what I currently have:
Code Snippet
ALTER TABLE Table_1
ALTER COLUMN TEST VARCHAR(1000) NULL DEFAULT 2
Thanks, Onam.
*UPDATE* I found this code but are there alternative methods? Additionally, if I was to update its DEFAULT value again how would I go about doing that? Do I first have to remove the CONSTRAINT and then run the command?
Code Snippet
ALTER TABLE Table_1 ADD CONSTRAINT DF_Albumns_Comment DEFAULT 2 FOR TEST
I have a table with ~30M records. I'm trying to add a column to the existing table with default value and have noticed following ... When using alter with default value- (Executes more than 45 min and killed forcefully)
ex: Â
ALTER TABLE dbo.Table_X Add is_Active BIT CONSTRAINT DF_Table_X_is_Active DEFAULT 'FALSE' NOT NULL
GO
When using update command after adding column with alter (without default value) it completes is 5 min.
ex: Â
ALTER TABLE dbo.Table_X Add is_Active BIT NULL
GO
UPDATE Table_X SET is_Active = 0 WHERE is_Active IS NULL
GO
Why there is so much of difference in execution times ? I was just trying to understand internal behavior of the SQL in these two scenarios.Â
Somehow I got the value -1.#IND into several records in a table in SQL 2000 DB.
I assume that it is a kind of €œNot A Number€??
The problem I am facing now, is that I can not modify the value to a legal value. Nor can I delete the record that holds the number. I get the error message:
€œAnother user has modified the contents of this table or view, the database row you are modifying no longer exists in the database.
Database error: €˜[Microsoft][ODBS SQL Server Driver][SQL Server] A floating point exception occurred in the user process. Current transaction is cancelled.€?
Any suggestions or comments?
Do anyone knows the syntax for changing the name of a column in a table with the
alter statement or any other statements????
Thanks in advance,
Vic
Hi
Is it possible to remove Identity property of a column using ALTER statement in SQL Server 7.0.
Thanks in advance
Rahul
looking for necessary syntax to alter table id to autoincrement adding identity statement, not sure on syntax for seed an increment, or if it is possible at all.
View 2 Replies View RelatedHi List,
I am trying to add a column with Alter Table, like this:
ALTER TABLE myTable ADD
newColumn bit DEFAULT 0 NOT NULL
This works fine with SQL-server 7, but I get this error in 6.5:
'ALTER TABLE only allows columns to be added which can contain nulls. Column 'newColumn' cannot be added to table 'myTable' because it does not allow nulls.'
I also found this in the help files:
'Columns added to a table must be defined as NULL. When a column is added, the initial value for the column will be set to NULL. This restriction forces the ALTER TABLE statement to fail if the bit or timestamp datatypes are used.'
My question, is there any other way to do this on 6.5 ?
Stefan Nilsson
Here is the alter statement that I am trying to use to create a relationship between 2 tables. This does not seem to work on mobile. What am I doing wrong?
ALTER TABLE [SubCategory] CONSTRAINT [FK_SubCategory_Category] FOREIGN KEY([CategoryID])
REFERENCES [Category] ([CategoryID])
ON UPDATE CASCADE
ON DELETE CASCADE
This is the error:
There was an error parsing the query. [ Token line number = 1,Token line offset = 27,Token in error = CONSTRAINT ]
I am trying to write one sql statement that deletes from two tables. Is it possible ? If yes, any thoughts ?
View 5 Replies View RelatedHello.
I'm trying to create a batch sql script which first alters some existing tables via the ALTER TABLE command, I then want to alter some existing stored procedures via the ALTER PROCEDURE command within the same batch. I have found that I can encompas the alter table scripts within a conditional IF EXISTS (Begin/End) but not the alter procesdure scripts. I have looked in reference material and have found nothing to suggest this type of operation is not possible. Is this possible? Is this a know bug fixed by a service pack?
Thanks in advance for any replies.
David.
I have 3 tables, with this relation:
tblChats.WebsiteID = tblWebsite.ID
tblWebsite.AccountID = tblAccount.ID
I need to delete rows within tblChats where tblChats.StartTime - GETDATE() < 180 and where they are apart of @AccountID. I have this select statement that works fine, but I am having trouble converting it to a delete statement:
SELECT * FROM tblChats c
LEFT JOIN tblWebsites sites ON sites.ID = c.WebsiteID
LEFT JOIN tblAccounts accounts on accounts.ID = sites.AccountID
WHERE accounts.ID = 16 AND GETDATE() - c.StartTime > 180
My client's website database is hosted by a third party. I need to alter one of the column definitions for the largest table in the database. Unfortunately, the transaction log fills up if I try to alter the table. I've done all the usual stuff like truncating the log, etc., but the simple fact is that the operation requires more log space than we have available. Therefore, we need to purchase additional disk space for the database.
What I'm looking for is a way to roughly estimate how much log space will be required to alter this table so that we purchase enough but not too much additional space. The table has an identity primary key and 4 other single column indexes: one int, one datetime and two varchar(30) columns.
Any suggestions? Thanks in advance.
I have coded an alter statement for adding a column to a temp table inside an sp,but it skips the alter statement while executing the sp! This happens even if I run the same code on query analyzer too. If I use 'GO' statement before the alter command,then it works fine on Query Analyzer.But, I can't use 'GO' in an sp. I am using the sa account. Any ideas on how to fix this??
Thanks.
Di.
Folks!
What is wrong with my syntax with the following command?:
alter table EmployeeInfo alter column OriginDate smalldatetime not null default getdate()
I'm getting:
Incorrect syntax near the keyword 'default'
Currently, in my table OriginDate is nullable with no default.
Thanks in advance for your help!
APF
It is possible to alter multiple columns within a single alter table statement?
I have got the following URL that tells it is not possible to alter multiple columns within in signle alert table statement.
http://www.blogcoward.com/archive/2005/05/09/234.aspx[^]
Does anyone know about that?
Thanks,
Mushq
Im working on Partition purge process, where I need to specify following statement:
SET @cmd = 'ALTER PARTITION FUNCTION ' + @function_name + '() MERGE RANGE (@range)'
EXEC (@cmd);
SET @cmd1 = 'ALTER DATABASE '+ db_name()+ ' REMOVE FILE ' + @partition_file
EXEC (cmd1);
I want to put this statement in Begin Tran /Commit statement but getting error that it is not allowed. "ALTER DATABASE statement not allowed within multi-statement transaction"..what are my options to rollback in case there is a failure.Â
I have written the following code:
Â
SET NOCOUNT ON
DECLARE @RowCount int; SET @RowCount = 0;
Begin Try
Begin Transaction
--------------------------------------------------------
-----Table Name: AlertsStaticRecord_Archive
-----Column Name: AlertID
--------------------------------------------------------
ALTER TABLE Â [AlertsStaticRecord_Archive] Â ALTER COLUMN [AlertID] int NOT NULL;
[Code] .....
But, when I execute these batch, I am getting error:
Msg 8111, Level 16, State 1, Line 11
Cannot define PRIMARY KEY constraint on nullable column in table 'AlertsStaticRecord_Archive'.
Msg 1750, Level 16, State 0, Line 11
Could not create constraint. See previous errors.
Because, the first ALTER statement is not getting executed.