How To Modify A Column Without Changing Data

Feb 26, 2007

Hi,

I was wondering how to modify a column's properties, like its datatype or length.

I know I'm supposed to do something like this:
ALTER TABLE MyTable ALTER COLUMN MyColumn int(20)

My main concern is, what will the database do to all the data in the column, if the column used to be, say nvarchar(50)? Will I lose the data in the column if I change the datatype? And what if I had data in this column that was longer than 20 characters? Will the data now be truncated? What can I do to make sure that nothing happens to the data once I change the datatype?

Any help would be greatly appreciated! Thanks! =)

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How To Modify Some Data Without Changing Everything

Oct 17, 2002

Please HELP!

I need to UPDATE a column by removing only the first occurance of $$sp;. I use the following to get an idea of what I have:

SELECT Reporting_Title_Html FROM Lab_Test Where RTRIM(Reporting_Title_Html)='$$sp;'
Reporting_Title_Html
------------------------------
$$sp;
$$sp;
$$sp;
$$sp;
$$sp;Thyroid maintenance required;$$sp..........

Get 5 Records....One record has multiple occurances of $$sp throughout the Reporting_Title_Html column.

I thought I could do:
Update Lab_Test Set Reporting_Title_Html=' ' Where RTRIM(Reporting_Title_Html)='$$sp;'

But I can't lose the trailing data from record #5. This is just a small sampling of what I'm trying to fix.

Any Ideas???

I've thought about REPLACE but that would replace all the $$sp's and I only want to change the very first one from $$sp to ' ' --> blank

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Trying To Modify Some Column Data In Some Rows

Dec 31, 2005

Trying to change some of the rows in a table specifically one column.
column type is varchar
ex. of data
current desired
$345,434.0 345434.0 (stripping out of $ & commas)
435.0 leave as is
general txt leave as is

having trouble updating data in table
tried using temp table, but update command make it so it won't see table

ex. piece of code
update currency_conversion
set currency_varchar = cast (cast (currency_varchar as money)as varchar)
select * from currency_conversion
where substring (currency_varchar from 1 for 1) = '$' ;

sql 2000
trying to do from query analyzer

thanks
glnsk8ter@yahoo.com

thanks
Glenn

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Modify All Data Within A Specific Column

Aug 15, 2007

I have a column (PERIMAGE_PATH) in my table. The data in this column is imported from a fixed width text file and looks like the following:

07J06274
05J03254
04J11245

I need to modify the data in the column to look like this:

..images7J06274.jpg
..images5J03254.jpg
..images4J11245.jpg

How can I do this?

Thanks for all your guys' help. This is the last question for the day. I promise

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Changing Column Data Type

Nov 23, 2007

I want to change a column's data type from bit to int. There are data in the table already. I'm wondering if it is save/correct way to issue the following command to change the data type for that column.ALTER TABLE database_tableALTER COLUMN my_bit_column INT; Thanks.

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Need Script To Modify A Formula Column Into Normal Column With Default Value.

Mar 29, 2001

I have a table called test with 4 fields namley studentname, Mark1, Mark2, total (formula column).

Created table test in the following structure,
create table test (studentname varchar(50), Mark1 numeric, Mark2 numeric, total as ([Mark1]+[Mark2]))

Now I need to drop formula nature of this column total and assign default value '0'. I like to know how to do it using T-Sql script.

Thanks for your help in advance.

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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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Modify ID Column

May 8, 2007

I initially modified the column 'ID' from not allowing NULL to allow, and saved it. But now I will like to change it back to 'not allow'. But it gives me the following error message when I try to save my changes:

'Pages' table
- Unable to modify table.
Cannot insert the value NULL into column 'ID', table <databasename>.Tmp_Pages'; column does not allow nulls. INSERT fails.
The statement has been terminated.

Is there a way I can work around this?

Using sql 2005

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Modify PK Column Size

Jun 20, 2008

Hi,

Is it possible to increase the primary column size..?

The PK data type is Varchar (8). Now I want to increase to varchar (12).

Thanks
Lakshmi.S

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Modify Column Output

Aug 17, 2007

using sql database, i have a smallmoney column. when i enter an amount, 50.00 for example, i have 50.0000 displayed. is there a way to only have 50.00 displayed?
same with the smalldatetime, is there a way to limit the display to "mm/dd/yyyy" without the "hh:mms am"

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How To Modify The Length Of A Column In Sql Server 6.5

Jul 21, 2004

how to modify the length of a column In sql server 6.5
example:

from varchar(10) to varchar(20)

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Need Query For Modify Column Type

Mar 10, 2008

Hello Experts,
Can any one tell me the query to modify the existing Column character length using QUERY?

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How To Modify Column In A Table With Replication?

Mar 2, 2007

Dear all

I have a problem about replication, so I want to modify some columns in a table, but my database using replicate. How to do it?

Please solution.

Thank.

PC Kaveesin.

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Modify A Column From Nvarchar(50) To A DateTime

Jun 3, 2007

Hello,

I have a column that is a currently set as nvarchar(50) and is called DateEmployed.
There are over a hundred rows that contain dates which is in nvarchar format.

This column now needs to be changed to a DateTime datatype. (Don't ask me it was not set
to a dateTime when this was first designed - I wasn't here)

However, I have to change this column to a DateTime without destroying the data.

Is there any easy way to write some script or use studio management to change this.

Currently the data is displayed like this in this column dd/MM/yyyy i.e. 25/8/2007.

The method I am using to try and change this is by going to studio management clicking
modify on the column and changing the datatype from a nvarchar(50) to a DateTime.

I get this following error message:
- Unable to modify table.
Arithmetic overflow error converting expression to data type datetime.
The statement has been terminated.

Any suggestions would be most grateful,

Thanks,

Steve

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IDENTITY Modify Or Edit Char Into One Column

Nov 6, 2007

sorry all help does not work , if the value like this

table = test

magusageid playid msgtype mchangeprice
------------- --------- ---------- ---------------
35 6 a 400
36 8 a 450

======================================
and other question is if magusageid is use int IDENTITY(1,1)
how can i edit char in my magusageid which like this
magusageid playid msgtype mchangeprice
------------- --------- ---------- ---------------
A000_35 6 a 400
A000_36 8 a 450

sorry the question is
when i insert one row into this table and the data type my want to auto increase 1 to z
in sql i can use IDENTITY this data type to increas but the column of data use only number without char
so i need to know how can i use IDENTITY + char to save data into one row
thank's

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Error Trying To Modify Column With SQL Server Express 2005

Mar 6, 2008

I am tearing my hair out with this!!

I have created a DB and up until yesterday I have been using SQL commands to add/remove tables, columns, constraints etc. However today when I attempt to modify the datatype of a column using

alter table Person modify Gender nchar(2)

I get this error

Msg 102, Level 15, State 1, Line 1

Incorrect syntax near 'modify'.

I can still add colums but get the same error if I try to drop them and I can amend the tables in any way via the Design view so I don't think it's permission related.

Any ideas greatly appreciated.

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Transactional Repln,how To Modify The Width Of A Column Of A Table Which Is Replicated

Aug 3, 2006

Hi All,
Is there a way by which we can modify the width of a column of a table which is being replicated without touching the ongoing transactional replication? This is for MSSQL2000 Transactional Replication.

I know (and successfully tried) that we can add a column to a table and that gets propaged to the replicate database and indeed the added column gets reflected there. How to add a column? sp_repaddcolumn or Right Click on the Publication-Properties and it shows a button to Add a Column.

This is what I have tried for modifying the width of a column of a table participating in Transactional Replication from varchar(10) to varchar(100)

MH (source) -> MH1 (Replicate)

The column ��col1�? had width of varchar(10) and this was altered to varchar(100).

insert into MH..test_mh values(4,'abcdeabcdefff')

select * from MH1..test_mh

exec sp_dropsubscription @publication = N'MH', @article = N'test_mh', @subscriber = N'UKPBDRMTST2', @destination_db = N'MH1'
go

exec sp_droparticle @publication = N'MH', @article = N'test_mh'
go

alter table test_mh alter column col2 varchar(100) null OR

MH1..sp_help test_mh

exec sp_addarticle @publication = N'MH', @article = N'test_mh', @source_table = N'test_mh'
go

exec sp_addsubscription @publication = N'MH', @article = N'test_mh', @subscriber = N'UKPBDRMTST2' , @destination_db = N'MH1'
go

Needless to say, help would be apreciated -
~Mihir

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Modify String Data Base On Data In The Table

Jun 17, 2004

I need to get rid of the first char of data in a field f1 (in sql server)

I tried to use:

update myTable
set f1= substring(f1,1,f1.Len -1)

and get error "The column prefix 'f1' does not match with a table name or alias name used in the query.

Could anyone help? Thanks.

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How To Modify Data?

Jun 18, 2007

How do I modify data in a sqlDataSource object (like inserting records, editing, deleting) similiary to how I modify data in a GradView using a DataList or repeater? I want to be able to have my own EditTemplate and be able to edit say four fields while I'm only viewing like two of them in the datalist/repeater.
<asp:DataList ID="DataList1" runat="server" DataKeyField="GameId"
DataSourceID="SqlDataSource1" RepeatColumns="1">
<ItemTemplate>
<%# Eval("field1") %><%# Eval("field2") %>....
</ItemTemplate>
<EditTemplate>......</EditTemplate>

</asp:DataList>

<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
ProviderName="<%$ ConnectionStrings:ConnectionString.ProviderName %>"
SelectCommand="SELECT ...."></asp:Sql....>

When I'm trying to add a edit-button (<asp:Button runat="Server" ID="EditButton" Text="Edit" CommandName="Edit" />) and click it nothing happens....What is missing?

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How To Modify One Colomn's Data On One Click?

Jan 8, 2008

Hello every body

i am using a view grid to display data
the viewgrid is tied to an sqldatasource control
i want to give the user the ability of modifing data by colomn instead of by row
how could i do ?

ghassan

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Modify VB6 App To Use SQL 2005 Data Instead Of Access 2003

May 19, 2007

I have an existing VB6 application which uses an Access 2003 backend datafile, however, I would now like to modify this to use an SQL 2005 datafile, but I don't know how to go about this or the implications when the application is installed on another machine.

The code I use for accessing the Access 2003 file is below, I want to convert this code to access an SQL 2005 datafile instead, can anyone give me some pointers on the best way to go about this, or code sample.

Dim rst As ADODB.Recordset
Dim dbs As ADODB.Connection

Set rst = New ADODB.Recordset
Set dbs = New ADODB.Connection

dbs.Open "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & _
strNetworkLocation & "MyDB.mdb; JET OLEDBatabase Password=MyPassword"

With rst
.Open "SELECT TOP 1 * FROM tblProject WHERE pjProject = '" & _
lstProject.Text & "'", dbs, adOpenKeyset, adLockOptimistic
strDrawingRef = !pjStartupDrawing
strProject = lstProject.Text
frmMain.OpenFile
.Close
End With

Thank-you in advance for any help you may provide.

Mandy

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Open Table With Query To Modify Data

Jul 23, 2007

In Enterprise Manager, I would right click on the table, choose Open Table and Query where I could select specific records and (most importantly) could alter data in a record by deleting the text, adding or over-typing.

In 2005 Server Management Studio I just cannot figure how to do this. I'm guessing that I need the 'Script Table as' option but then what?

I have managed to open selected data using the New Query and then Design Query in Editor, but the results only appear in a kind of view form and I cannot seem to alter any of the data entries, I get dotted lines around the selected field.

Please help, it seemed so much easier in 2000!

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How Do I Modify Union Data Flow Task Property?

Apr 4, 2008

I've created a Union All data flow task which unions string fields from a couple of queries. I found that I needed to increase the length of the string field in the queries. Increasing the length causes an error in my Union All task. I can't seem to find a way to change the property of the fields in the Union All task. Most of the other data flow tasks have an advanced editor where I can change the length or type of the fields on the input and or output. I can't seem to find this for the Union All task.

Is there any way short of deleting the Output column and recreating it? (I like the order of my original output columns)

Thanks,
Bill Webster

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Changing Column Name

Nov 9, 2004

Hi all,

I have a table that has integrity constraints in place and it is populated with the data. I need to rename one of the columns in the table. I am hesitant to use sp_rename procedure because when I used it before I get a warning message that says "changing any part of an object name could break scriptd and stored procedure." how big of a problem is it? Is there any other way to do it without hearting anything? Thanks.

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Changing A Column Name

Nov 30, 2005

How can you change a Column name for MS SQL 2000 ?

something like :

ALTER TABLE [dbo].[MyTable]
OldName RENAME NewName
GO

thank you

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Jul 20, 2005

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Apr 3, 2007

Hello,

If I want to access or modify my local subscription data(not the configuration) how can I do that(from sql server 2005 or from asp.net)? Also can i update directly to the local subscriptions data or do I need another layer which will update from a table for example??

Thank you

Salah

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Sep 20, 2005

I am trying to change the row and column heading to make it more meaningful in MDX.

For example instead of showing the_actual_cost, i want to show cost. This is done easily in SQL like

SELECT the_actual_cost AS cost......

Any help will be greatly appreciated.

Thanks
Mahesh

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Dec 2, 2006

Hello I am having a table

table1
col1 (bit)

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col1 (smallint)

true will be = 1
and false = 0

how can i do it ??
thank you

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Apr 21, 2008

Hi all,

I have a problem writing a query to change row to column with some conditions and computations. It's appreciated if you guys can give some ideas.

Below is the sample data:
CREATE TABLE Item (Line int, Code nvarchar(8),Price decimal, Check nvarchar(1))
INSERT INTO Item VALUES (1,'001',200 ,'Y')
INSERT INTO Item VALUES (2,'002',300 ,'Y')
INSERT INTO Item VALUES (3,'003',500 ,'Y')
INSERT INTO Item VALUES (4,'004',1000,'N')
INSERT INTO Item VALUES (5,'005',2000,'N')

The expected result :
Line with check = 'N' must be converted to column(s).

Line Code Price Item004 Item005
1 001 200 1000 * (200/200+300+500) 2000 * (200/200+300+500)
2 002 300 1000 * (300/200+300+500) 2000 * (300/200+300+500)
3 003 500 1000 * (500/200+300+500) 2000 * (500/200+300+500)

Note : I would like to avoid using any cursors if possible.

Thanks in advance.

cheers,
erwine

... sql is fun...

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Jul 23, 2005

Does anybody know how I can change the default value for a column?I was trying to remove the default value in order to add the new oneafterwards. This is what I tried:alter table /table-name/ drop default for /column-name/alter table /table-name/ alter column /column-name/(/new-decl-without-default/)It did not work. I cannot find a solution in the documentation. Maybeyou can help me out?Thank you,Johan

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Jul 20, 2005

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Jul 30, 2007

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