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/* 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 Relatedhow 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 RelatedHow 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
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
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
What are the pros/cons of datatype conversions using the advanced properties of the source adapters or transformation components themselves vs. using the data conversion transformation? Sometimes I am able to do all the conversions I need using the advanced properties rather than use a data conversion component, but didn't know if this was considered bad practice, or has some other impact that isn't immediately apparent.
Thanks
Kory
Hi guys,
If I have a temporary table called #CTE
With the columns
[Account]
[Name]
[RowID Table Level]
[RowID Data Level]
and I need to change the column type for the columns:
[RowID Table Level]
[RowID Data Level]
to integer, and set the column [RowID Table Level] as Identity (index) starting from 1, incrementing 1 each time.
What will be the right syntax using SQL SERVER 2000?
I am trying to solve the question in the link below:
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2093921&SiteID=1
Thanks in advance,
Aldo.
I have tried the code below, but getting syntax error...
ALTER TABLE #CTE
ALTER COLUMN
[RowID Table Level] INT IDENTITY(1,1),
[RowID Data Level] INT;
I have also tried:
ALTER TABLE #CTE
MODIFY
[RowID Table Level] INT IDENTITY(1,1),
[RowID Data Level] INT;
Hi all,I have a DataRow that I'm attempting to insert into SQL. The row has an item I"ll refer to as row["AbsorbtionDeficiency"]. I'm filling this data row from a ODBC connection to a propriatary database. Now I want to insert this data into SQL where the same row data type is "money".I'm not to familiar with the different data types, but the long and short of it is this. When I build my SQL Insert statement, sometimes this value is blank, sometimes it's 0, and sometimes it will have a dollar amount(no formating just the numeric). How to I get this data out of the row in a format that SQL understands... Since I'm creating a SQL string the datatype of the row I assume doesn't matter, so I"m doing a .ToString() when I build the statement.Do I need to do a CAST('0' AS MONEY) to each line that is money type? Or is there an easier way?I would insert the code, but it's a pretty masive statement and I don't think it's really needed yet.ThanksJosh
View 1 Replies View RelatedI can't get sp_executesql to accept more than 10 converted parameters in one execution. A stored procedure loops through a table variable that presents up to 100 parameters and their named data types. I've tried selecting into sql_variant and nvarchar variables and converting them to the named data type in the loop.
sp_executesql is outside the loop.
For the first 10 parameters sp_executesql recognizes the data type conversions of the variables that hold the parameter values, but then it fails to accept the conversions of the 11th and subsequent variables. Is there a limit to the number of conversions that sp_executesql can cope with?
I would like to set a field to not null which I can do like this: ALTER TABLE table1 ALTER COLUMN field1 BIGINT NOT NULL
My question is there anyway to set this field to NOT NULL without having to specify the data type BIGINT? I'm using dynamic sql and if there was a way then I wouldn't need to go get the data type of the field dynamically and it would save me a step. Thanks.
Hi people,I?m trying to alter a integer field to a decimal(12,4) field in MSACCESS 2K.Example:table : item_nota_fiscal_forn_setor_publicofield : qtd_mercadoria integer NOT NULLALTER TABLE item_nota_fiscal_forn_setor_publicoALTER COLUMN qtd_mercadoria decimal(12,4) NOT NULLBut, It doesn't work. A sintax error rises.I need to change that field in a Visual Basic aplication, dinamically.How can I do it? How can I create a decimal(12,4) field via script in MSACCESS?Thanks,Euler Almeida--Message posted via http://www.sqlmonster.com
View 1 Replies View RelatedI'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?
I 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.
I 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
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
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 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.
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 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:
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:
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.
Hello,Easy one for the SQL experts.I have a simple table. For the example let's say it looks like this:CREATE TABLE doc_exb ( column_a INT, column_b VARCHAR(20) NULL)Now I want to alter this table and make the column column_a a floatinstead of an INT.How do I do that? I cannot DROP and ADD the column I would lose somevery precious data.Thanks a lot
View 1 Replies View RelatedI need to alter datatypes from
numeric(18,0) to 'int' type across all the tables in the database of about 200 tables. Nearly 200 PK/FKs will be affected with this change..How can I do this with a script? Can anyone help witha script which drops all the constraints/indexs etc and then alters the datatype before re-creating the constraints/indexs..?
P.s. No rounding problem is expected as data is already in whole numbers.
Thanks,
Di.
how do you alter multiple data type in a table?
in oracle we have "modify"
is there something similar in sql server?
Dear All,
i've one database replicated from production server.
now i need to change one perticular table column datatype.
what steps i need to follow to do this?
thankyou very much
Arnav
Even you learn 1%, Learn it with 100% confidence.
I would like to add an Identity to an existing column in a table using astored procedure then add records to the table and then remove the identityafter the records have been added or something similar.here is a rough idea of what the stored procedure should do. (I do not knowthe syntax to accomplish this can anyone help or explain this?Thanks much,CBLCREATE proc dbo.pts_ImportJobsas/* add identity to [BarCode Part#] */alter table dbo.ItemTestalter column [BarCode Part#] [int] IDENTITY(1, 1) NOT NULL/* add records from text file here *//* remove identity from BarCode Part#] */alter table dbo.ItemTestalter column [BarCode Part#] [int] NOT NULLreturnGOSET QUOTED_IDENTIFIER OFFGOSET ANSI_NULLS ONGOhere is the original tableCREATE TABLE [ItemTest] ([BarCode Part#] [int] NOT NULL ,[File Number] [nvarchar] (20) COLLATE SQL_Latin1_General_CP1_CI_AS NULLCONSTRAINT [DF_ItemTest_File Number] DEFAULT (''),[Item Number] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULLCONSTRAINT [DF_ItemTest_Item Number] DEFAULT (''),[Description] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULLCONSTRAINT [DF_ItemTest_Description] DEFAULT (''),[Room Number] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULLCONSTRAINT [DF_ItemTest_Room Number] DEFAULT (''),[Quantity] [int] NULL CONSTRAINT [DF_ItemTest_Quantity] DEFAULT (0),[Label Printed Cnt] [int] NULL CONSTRAINT [DF_ItemTest_Label Printed Cnt]DEFAULT (0),[Rework] [bit] NULL CONSTRAINT [DF_ItemTest_Rework] DEFAULT (0),[Rework Cnt] [int] NULL CONSTRAINT [DF_ItemTest_Rework Cnt] DEFAULT (0),[Assembly Scan Cnt] [int] NULL CONSTRAINT [DF_ItemTest_Assembly Scan Cnt]DEFAULT (0),[BarCode Crate#] [int] NULL CONSTRAINT [DF_ItemTest_BarCode Crate#] DEFAULT(0),[Assembly Group#] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULLCONSTRAINT [DF_ItemTest_Assembly Group#] DEFAULT (''),[Assembly Name] [nvarchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULLCONSTRAINT [DF_ItemTest_Assembly Name] DEFAULT (''),[Import Date] [datetime] NULL CONSTRAINT [DF_ItemTest_Import Date] DEFAULT(getdate()),CONSTRAINT [IX_ItemTest] UNIQUE NONCLUSTERED([BarCode Part#]) ON [PRIMARY]) ON [PRIMARY]GO
View 2 Replies View RelatedI am using sql server ce.I am changing my tables sometimes.how to use 'alter table alter column...'.for example:I have table 'customers', I delete column 'name' and add column 'age'.Now I drop Table 'customers' and create again.but I read something about 'alter table alter column...'.I use thi command but not work.I thing syntax not true,that I use..plaese help me?
my code:
Alter table customers alter column age
This one cost me a solid half hour yesterday. I'm wondering why onearth the default precision for a decimal type is 18,0. Maybe I'mmistaken. A decimal datatype sort of implies that you'd want somethingafter the decimal!Question is, can I set this database-wide? Like all new decimaldatatypes have a precision of 12,6 or something like that? I haven'tseen anything about this in the googling I have done...
View 3 Replies View RelatedHi there,
I'm trying to set an int type attribute to 0 for its Default Value, but it keeps reverting to ((0)). What is causing this?
Every int type attribute on that table does the same. There is one bit type attribute and a bunch of other type of attributes, but non of them are giving me a problem. The table is a copy from another database and I did check all the constraints and properties to make sure they're the same.
Thank you,
--Alex
Ilve install sql server 2012 in my pc and i want to change datetime default format. How can i do this and please i dont want to take the result from select convert() or select cast or something like this. I ve want to take the format i want writing query select datecolumn from table.
Now the format i have is: 2015-11-16 09:04:00.000
And i want this format: 16.11.2015 09:04:00
Is any way to convert automaticaly by select only column? or can i change at all once? or must write function to when i select the column can change automatic ? or another thing, i ve see in column properties something like formula. In computed column specification in formula i wrote this:
((CONVERT([varchar](10),getdate(),(104))+' ')+CONVERT([varchar](10),getdate(),(108)))
And I take the format i want automaticaly but i get the current date for all rows and i cant edit or insert that column anymore. So, how to change the format of date time but no from select query.