How Can I Alter A Table Turning ON Or OFF An IDENTITY Field ?

Nov 9, 2003

How can I alter a table turning ON or OFF an IDENTITY field ?





for example:


if I had my DB with Client_ID as an I IDENTITY field and for some reason it has


changed to just INT (with no IDENTITY) - how can I tell it to be IDENTITY field again ?








+





Does anyone knows an article on database planning ?


(I wanna know when should I use the IDENTITY field)

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Alter Table Alter Column In MSACCESS. How Can I Do It For A Decimal Field?

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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Transact SQL :: How To Alter Existing Table Column As Identity Without Dropping Table

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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TSQL - Using ALTER TABLE - ALTER COLUMN To Modify Column Type / Set Identity Column

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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Jul 9, 2006

While I have learned a lot from this thread I am still basically confused about the issues involved.

.I wanted to INSERT a record in a parent table, get the Identity back and use it in a child table. Seems simple.

To my knowledge, mine would be the only process running that would update these tables. I was told that there is no guarantee, because the OLEDB provider could write the second destination row before the first, that the proper parent-child relationship would be generated as expected. It was recommended that I create my own variable in memory to hold the Identity value and use that in my SSIS package.

1. A simple example SSIS .dts example illustrating the approach of using a variable for identity would be helpful.

2. Suppose I actually had two processes updating these tables, running at the same time. Then it seems the "variable" method will also have its problems. Is there a final solution other than locking the tables involved prior to updating them or doing something crazy like using a GUID for the primary key!

3. We have done the type of parent-child inserts I originally described from t-sql for years without any apparent problems. (Maybe we were just lucky.) Is the entire issue simply a t-sql one or does SSIS add a layer of complexity beyond t-sql that needs to be addressed?



TIA,



Barkingdog

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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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Feb 13, 2008

I am having problem when performing the alter table switch. Both tables are identical and have pk.

ALTER TABLE SWITCH statement failed. There is no identical index in source table 'LocalDeltanet.dbo.testresults' for the index 'PKIDX_testSummary' in target table 'LocalDeltanet.dbo.testresults_part' .



CONSTRAINT [PKIDX_testSummary] PRIMARY KEY CLUSTERED

( [testresult_id] ASC )

WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON)

ON TResultsScheme (testresult_id) ) ON TResultsScheme (testresult_id)


I have performed the function on other tables successfully, but this is the first that has an identity column involved. Is there anything special that needs to be done?



[testresult_id] [int] IDENTITY(1,1) NOT NULL,

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Jun 30, 2006

I want to insert a new record into a table with an Identity field and return the new Identify field value back to the data stream (for later insertion as a foreign key in another table).

What is the most direct way to do this in SSIS?



TIA,



barkingdog



P.S. Or should I pass the identity value back in a variable and not make it part of the data stream?

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Apr 25, 2007

Hi,

I have a table with 1000000 records i try to add a field with following`spec.

[mkey] [int] IDENTITY(1,1) NOT NULL

I get the following meassage:-

yearly' table
- Saving Definition Changes to tables with large amounts of data could take a considerable amount of time. While changes are being saved, table data will not be accessible.

Then I Have the following error:-
Time out error

- How is the best way to copy a large table from one to anther.

regards

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Feb 29, 2008

 I have 2 tables - tblOrders and tblOrderDetails. Every time an order is placed, 2 INSERT statements are executed. The first one enters the general order and customer information in the tblOrders table:INSERT INTO tblOrders (custname, custdetails, orderdate) VALUES (@custname, @custdetails, @orderdate)The primary key in this table is OrderID which is an Identity column. This is the foreign key in the tblOrderDetails table.I'm trying to get the Identity value from the first INSERT statement to use in the second INSERT statement:INSERT INTO tblOrderDetails (orderid, productid, productcost) VALUES (@orderid, @productid, @productcost)  How do i obtain this value and how would I supply it to the second INSERT statement? 

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May 11, 2004

Hi, I have the lovely task of overhauling some of our SQL-based systems. I've found many tables that don't have unique identifying numbers that really should have them. I've searched around and people keep mentioning the Identity field as being similar to Autonumber in Access. The only examples I could find involved setting up a new table... but I need to add (and populate) an identity column to an existing database table. Does anyone know the command for this?

Example... my table is called PACountyTown. It currently has 3 columns: County, Town, and Area. I wish to call the identity-ish field RecordID.

Thanks in advance!

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Jan 4, 2006

Hello everyone,

I have a table X that has two columns (names have been changed to protect the guilty and innocent alike):
ID which is an identity column, and
Data which is a varchar.

I am trying to DTS data from a text file into this table. I want the identity column ID to auto-populate and each row of information from the file to be stored in the Data field.

I am creating the DTS package using the wizard in Enterprise Mgr. No matter what I try, I keep getting the following error:

Cannot insert the value NULL into column 'ID', table 'X'; column does not allow nulls. INSERT fails.

Any advice on what I need to do to get this working? It seems like such a simple thing and I'm getting very frustrated. :eek:

Thanks in advance.
Cathy

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Jul 20, 2005

Dear All,Suppose in the program a record is added to a table whoseprimary key is a identity field. If I really want to get the lastestvalue for that field after the insertion, is it the best way to useIDENT_CURRENT() to obtain this value?Thanks for your kind attentionYours faithfully,Benny

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Aug 3, 2006

i have a table
table1
column1 int not null
column2 char not nul
column3 char

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Aug 31, 2001

i am altering an int column to identity:
where is something wrong here?

error:

Server: Msg 156, Level 15, State 1, Line 1
Incorrect syntax near the keyword 'IDENTITY'.

statement:

ALTER TABLE Navigation Alter column [Navigation_ID] int IDENTITY(1,1)

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I'm attempting to remove the IDENTITY property from a column using the ALTER command but can't seem to find the right syntax. I've tried every conceivable combination I can think of. I can add the property to a column that doesn't have it.

It's easy to do in Enterprise Mgr., but I want to script the change.

I really don't want to drop the table and rebuild if I don't have to.

Sidney Ives

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May 2, 2008

HELLO All,

Does anybody knows how to set identity to column using ALTER Script.

Thanks in advance.

--kneel

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May 8, 2008

Hello All,
There is a table A in SQL. One of the column of A was IDENTITY before and was getting referenced in other table B.

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ALTER TABLE TableA
ALTER COLUMN ColumnA
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Thanks,
-S

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Feb 27, 2008

hello experts,

Any body know what is the query for modifying the identity column in a table? i mean modifying from IDENTITY column to int colum or VICE-VERSA

Thanks
Muthu

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Jun 18, 2007

I tried



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they all can not work,

any idea about this? thanks


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Hi,

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Any thoughts?

Your help is much appreciated,
-Scott

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Thanks.

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Oct 27, 2006

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Code:

ALTER TABLE [ImpExpTables].[dbo].[ImpExp_eBayLocalNeedsDeleted]
ALTER COLUMN ID int IDENTITY(1,1) NOT NULL



just gives error at IDENTITY

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TIA,



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---------------
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---------------
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Hi Guys,
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