Transact SQL :: How To Alter Table To Add A Constraint
Sep 19, 2015
There is a table exists in a database name tbDatabaseProviders.
I want to alter this table to add a column DatabaseProvider Also I want to add a default constraint so if nothing than 1 should be added.
Remember, the table already exists so when I write the script query then I want to first check the constraint if it exists then I dont want to add the constrait otherwise I will add it.
I was having problem to first add a constraint with the constraint name so I could find the constraint before finding it if it already exists.
What should I do the above.
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Dec 1, 2007
I have a stored procedure that adds constraints from a variable:
ALTER procedure [dbo].[addMyConst](@txtAuto_ourlim money OUTPUT,@txtGen_ourlim money OUTPUT)ASEXECUTE('ALTER TABLE [dbo].[tbl1] ADD CONSTRAINT DF_auto_ourlim DEFAULT ' + @txtAuto_ourlim + ' FOR Auto_ourlim')EXECUTE('ALTER TABLE [dbo].[tbl1] ADD CONSTRAINT DF_Gen_ourlim DEFAULT ' + @txtGen_ourlim + ' FOR Gen_ourlim')
This works fine unless one of the variables is null or empty. Then I get the error: "Incorrect syntax near the keyword 'FOR'
Evidendly SQL Server Express sees "....DEFAULT + + FOR..." but I don't know.
I've fiddled with this a long time and haven't a clue how to fix it. Any help would be appreciated. Thanks, Steve
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Jun 12, 2007
I 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
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Jun 12, 2003
I need to run the alter table to drop a default. However, the default name is kind of 'dynamic' from around 1000 databases, thus I need to run the following sql to get the name to a variable. Now, it looks the alter table statement does not like to drop a vaiable, is there a solution about it?
declare @radius_default varchar(40)
select @radius_default = (select sobj.name from sysobjects sobj
inner join syscolumns scolumn
on sobj.ID = scolumn.cdefault
where scolumn.name = 'radius' and sobj.name like '%LandMarks%')
print 'Need To Drop @radius_default: ' + @radius_default
--====================================
alter table LandMarks drop constraint @radius_default
thanks
David
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Apr 9, 2008
Pls help me
i want to alter table and add identinty constraint on one column
create table play8(id int)
" alter table play8
alter column id int identity(1,1) " GIVES ERROR or it is posibble
Yaman
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May 17, 2006
Hi.I'm getting errors like this when I try to run an upgrade script I'm trying towrite/test:altering labels to length 60Server: Msg 5074, Level 16, State 4, Line 5The object 'ALTPART_ANNOT_ANNOTID_FK' is dependent on column 'label'.I used this to bracket my script:sp_msforeachtable "ALTER TABLE ? NOCHECK CONSTRAINT all"gosp_msforeachtable "ALTER TABLE ? DISABLE TRIGGER all"go/* updates here */sp_msforeachtable @command1="print '?'",@command2="ALTER TABLE ? CHECK CONSTRAINT all"gosp_msforeachtable @command1="print '?'",@command2="ALTER TABLE ? ENABLE TRIGGER all"goI guess the alter table nocheck constraint isn't disabling the fk'scompletely?Is there a way around this, or do I manually have to do the constraintdropping/recreating?ThanksJeff Kish
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Nov 20, 2013
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
)
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Oct 25, 2015
we have a table in our ERP database and we copy data from this table into another "stage" table on a nightly basis. is there a way to dynamically alter the schema of the stage table when the source table's structure is changed? in other words, if a new column is added to the source table, i would like to add the column to the stage table during the nightly refresh.
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Oct 27, 2015
I want to alter my all tables to change the name of all columns.
I need this because all column names were created with space and I want to remove the space for future work .
For example – In Table Customer there is a column name [Cust_Id ] and I want to change it with [Cust_Id]
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Jun 11, 2015
CREATE TABLE PRODUCT_SALES
(
Salesmanid BIGINT,
Productid BIGINT
)
INSERT INTO PRODUCT_SALES (Salesmanid,Productid) VALUES (1,1)
INSERT INTO PRODUCT_SALES (Salesmanid,Productid) VALUES (1,2)
INSERT INTO PRODUCT_SALES (Salesmanid,Productid) VALUES (1,3)
SELECT * FROM PRODUCT_SALES
/* SalesmanID is reference key from Sales Master and ProductID is reference key from Product Master. How should i restrict user through DB with any constraint check, if user tries to enter
INSERT INTO PRODUCT_SALES (Salesmanid,Productid) VALUES (1,2),
It should throw error , if possible user defined message would be more useful.
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Jul 7, 2015
I have a table which has been partitioned on BIGINT column.
Partitioned_Table (ID BIGINT, Name VARCHAR(10), Gender VARCHAR(2))
I have a left range partition function on ID column.
CREATE PARTITION FUNCTION Partition_Function ( BIGINT )
AS RANGE LEFT
FOR VALUES ( '20150601000', '20150602000', '20150603000' );
That means the first partition is ID >= 20150601000 to ID < 20150602000.
I have to switch in a table into an empty partition.
Switching_In_Table(ID BIGINT, Name VARCHAR(10), Gender VARCHAR(2))
Before the switch in, I am creating a CHECK constraint on Switching_In_Table CHECK(ID LIKE '20150625%') Can I use like clause in this scenario?
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May 27, 2015
I have existing table which is having Set Quoted Identifier Off and Set Ansi Null
Now I want to change those setting so Is there any alter statement for the same?
Also Let's say At my database level If those settings are off and If I convert it to ON then It is not taking effect on existing tables SP which are already build.
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Apr 24, 2013
IF NOT EXISTS (SELECT TOP 1 1 FROM dbo.syscolumns WHERE id = OBJECT_ID(N'dbo.Employee) and name = 'DoNotCall')
BEGIN
ALTER TABLE [dbo].[Employee] ADD [DoNotCall] bit not null Constraint DoNot_Call_Default DEFAULT 0
IF ( @@ERROR <> 0 )
GOTO QuitWithRollback
END
It just takes a LOT of time in SQL Server Management studio. I have to cancel the query and cancelling takes a whole lot time. I am using SQL Server 2008.
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Dec 7, 2001
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
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Mar 16, 2004
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
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Jul 23, 2005
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
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Jul 20, 2005
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
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Oct 8, 2007
I 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
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Aug 12, 2015
I want to enforce a constraint on the table where , the same MenuId cannot have 2 different prices for the same date range (accidentally).I think CHECK constraint won't work.
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Apr 20, 2015
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.
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May 7, 2015
I have written the following code:
SET NOCOUNT ON
DECLARE @RowCount int; SET @RowCount = 0;
Begin Try
Begin Transaction
--------------------------------------------------------
-----Table Name: AlertsStaticRecord_Archive
-----Column Name: AlertID
--------------------------------------------------------
ALTER TABLE [AlertsStaticRecord_Archive] 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.
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May 27, 2015
ALTER TABLE [dbo].[bkrm_lendcoll] ADD CONSTRAINT
ReqdCovgAmt_constraint33 CHECK
( case
when CovgAmt = 0 and ReqdCovgAmt = 0 then 1
when CovgAmt = 0 and ReqdCovgAmt = 1 then 1
when CovgAmt = 1 and ReqdCovgAmt = 0 then 1
when CovgAmt = 1 and ReqdCovgAmt = 1 then 0
end =1
)
This is my first attempt to add a constraint for business logic. The desired behavior is that the two columns together have the same behavior as a radio button. (one can be true, the other true, both can be false, but both cannot be true.) I get this error when I attempt to update it.
The ALTER TABLE statement conflicted with the CHECK constraint "ReqdCovgAmt_constraint33". The conflict occurred in database "Std", table "dbo.lendcoll".
So, basically my question is, when you have two bit columns and want them to have the truth table such as described, how can I set a Check constraint to enforce this?
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May 5, 2015
I have a table named [New Item] and created a default constraint on a column, and i wanted to change the data type of the column using the query
alter table [new item]
alter column pcs_qty decimal(15,2) not null
but the name of the default constraint is 'DF__New Item__Pcs_Qt__2D12A970' and i am not able to delete the constraint because it contains a space in between.Is there any work around for this.
I tried to delete the constraint by using the query
alter table [new item]
drop constraint 'DF__New Item__Pcs_Qt__2D12A970'
but I am getting the exception,
Msg 102, Level 15, State 1, Line 2
Incorrect syntax near 'DF__New Item__Pcs_Qt__2D12A970'.
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Feb 26, 2008
Hello,
I've a table with primary key defined as non-clusterd, now without dropping it can I modify the existing index to clustered through tsql as I had to write some migration script and in that script I wanna do this.
Thanks in Advance,
Rohit
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May 8, 2015
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.
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Jul 9, 2015
I'm trying to update rows in a simple table that has a UNIQUE KEY CONSTRAINT defined on one of its columns. Here is the DDL for the table:
CREATE TABLE [dbo].[SEC_USER](
[SEC_USER_ID] [int] IDENTITY(1,1) NOT NULL,
[USER_CODE] [varchar](100) NOT NULL,
[USER_NAME] [varchar](128) NOT NULL,
[EMP_CODE] [varchar](6) NOT NULL,
[Code] ....
When trying to execute the UPDATE statement the query fails with a constraint violation error:
Violation of UNIQUE KEY constraint 'UQ__SEC_USER__A039F1EE62FE8444'. Cannot insert duplicate key in object 'dbo.SEC_USER'. The duplicate key value is (34337).
What has me baffled is that I'm not doing any insert. Also, the value that it's referencing - 34337 - doesn't exist in the table at all. I'd rather not drop the constraint.
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Oct 6, 2015
I am trying to create a check constraint that prevents entry of a date range that overlaps any other date range in the table. The below example script results in the error message: The INSERT statement conflicted with the CHECK constraint "ck_dt_overlap". what I am doing wrong?
CREATE TABLE t1 (d1 date,d2 date)
go
create function dbo.dt_overlap (@d1 date, @d2 date) RETURNS BIT
AS
BEGIN
IF EXISTS (SELECT 1 from t1 where d1 between @d1 and @d2 or d2 between @d1 and @d2)
RETURN 1
RETURN 0
END
go
alter table t1 add constraint ck_dt_overlap CHECK (dbo.dt_overlap(d1,d2)=0)
go
insert into t1 values ('2015-01-01','2015-02-01')
insert into t1 values ('2015-01-15','2015-02-15')
--BOTH inserts result in the following message: The INSERT statement conflicted with the CHECK constraint "ck_dt_overlap".
drop table t1
drop function dbo.dt_overlap
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Sep 7, 2007
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;
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Sep 5, 2015
I am really puzzled by an apparent difference between table index key column order and its statistics order. I was under understanding that index statistics mirror index definition. However, in my db 2470 index ordinal definitions match statistics definition but 66 do not. I also can reproduce such discrepancy in 2008 R2, 2012 and 2014.
As per definition,
stats_column_id
int
1-based ordinal within set of stats columns
This script duplicates this for me.
BEGIN TRAN
GO
use tempdb
GO
CREATE TABLE [dbo].[ItemProperties](
[itmID] [int] NOT NULL,
[cpID] [smallint] NOT NULL,
[ipuID] [tinyint] NOT NULL,
[Code] ....
The result I get is this:
object_id stats_name
stats_column_list
1525580473 PK_ItemProperties_itmID_ipuID_cpID itmID, cpID, ipuID,
and
object_id index_name
index_column_list
1525580473 PK_ItemProperties_itmID_ipuID_cpID itmID, ipuID, cpID,
Also a query I used to discover this in my db is:
WITH stat AS
(
SELECT
s.object_id
,s.name as stats_name
,(
SELECT
c.name + ', ' as [data()]
FROM sys.stats_columns as sc
[Code] .....
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Jul 26, 2004
I have contract table which has built in foreign key constrains. How can I alter this table for delete/ update cascade without recreating the table so whenever studentId/ contactId is modified, the change is effected to the contract table.
Thanks
************************************************** ******
Contract table DDL is
create table contract(
contractNum int identity(1,1) primary key,
contractDate smalldatetime not null,
tuition money not null,
studentId char(4) not null foreign key references student (studentId),
contactId int not null foreign key references contact (contactId)
);
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Aug 13, 2006
In SQL Server 2005,here are two tables, created by the following SQL Statements:
CREATE TABLE student(
ID CHAR(6) PRIMARY KEY,
NAME VARCHAR(10),
AGE INT
);
CREATE TABLE score(
ID CHAR(6) PRIMARY KEY,
SCORE INT,
FOREIGN KEY(ID) REFERENCES student(ID)
);
For the length of Column ID is not enough, So I want to alter its length.The alter statement is:
ALTER TABLE student ALTER COLUMN ID CHAR(20)
For the table student is referenced by table score, the alter statement can not alter the column of the table student, and the SQL Server DBMS give the errors.
But, I can manually alter the length of the column ID in SQL SERVER Management Studio. How to alter column length of the master table(student) along with the slave table(score)?
Thanks!
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May 26, 2015
which ALTER TABLE/ALTER COLUMN- Statement has a Recreate Table as result ?
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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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