DROP COLUMN

Feb 14, 2000

Does anyone know why this does not work?

ALTER TABLE deal DROP COLUMN TestField

Server: Msg 170, Level 15, State 1, Line 1
Line 1: Incorrect syntax near 'TestField'.

Thanks,
Paul

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ALTER TABLE DROP COLUMN LastUpdated Failed Because One Or More Objects Access This Column.

Mar 7, 2008

Hi I’m trying to alter a table and delete a column I get the following error. The object 'DF__Morningst__LastU__19EB91BA' is dependent on column 'LastUpdated'.
ALTER TABLE DROP COLUMN LastUpdated failed because one or more objects access this column. I tried deleting the concerned constraint. But the next time I get the same error with a different constraint name. I want to find out if I can dynamically check the constraint name and delete it and then drop the column. Can anyone help.IF EXISTS(SELECT 1FROM sysobjects,syscolumnsWHERE sysobjects.id = syscolumns.idAND sysobjects.name = TablenameAND syscolumns.name = column name)BEGIN EXECUTE ('ALTER TABLE tablename DROP CONSTRAINT DF__SecurityM__DsegL__08C105B8')EXECUTE ('ALTER TABLE tablenameDrop column columnname)ENDGO
 

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Aug 30, 2006

Hi:

'Unfortunately', there is still a SQL6.5 sp4 server that I need to handle.
I need to drop a coulmn xyz from an important table tblABC.
But neither Enterprise manager could do it nor
'alter table tblABC drop column xyz' could run.

Without the hastle of makin a tblABCcopy and copy all data from tblABC except column xyz and re-do all fks; is there another way to drop the column?

thanks
-D

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Drop A Column

Apr 6, 2015

I have a question, Every month I get a request from cutomer service to go into a SQL VIEW and DELETE a column to reflect the past Month. How to write a query to create a SQL job to performed this task automatically. For example today I deleted the column [2015/03] which represents the month of March. The columns left are [2015/04] representing the current month, [2015/05], [2015/06],[2015/07]....[2016/08].Next month I will have to delete column [2015/04]and the current month will be [2015/05]....etc.

So I'm thinking I will have to Drop the column and also Maybe using a date funtion to look at the current date and format it to reflect [YYYY/MM] and IF the Column Month is less than current date month then drop the column.

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Mar 15, 2007

How to drop single column in a table.........

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How To Drop Primary Key By Specifying Column Only?

Apr 24, 2007

I checked column from xsd file which created from DataBase.
And before installing my application I will check any column in destination base whether have complete column or not.
 
And if there is any column which is not wanted column(not same as xsd structure)
I will delete it by creating sql command as follow "ALTER TABLE tableName DROP COLUMN column1, column2, ......"
and Execute it by program initialization.
 
So
I need delete it by run-time
 
 
However some column may be Primary Key with any reason
 
That's why I can't delete them by simple command
 
I expect to delete them by specific column instead of specific constraint name which is not sure name.
 
 
Please advise me....

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Drop A Column In A Table!!

Aug 2, 2001

Hi all,
how can I drop a column in a table.

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Can't Drop Column That Has A Default

Jun 13, 2008

I did this...

ALTER TABLE tm_spn_equip_def ADD Customer_No int NOT NULL DEFAULT dbo.f_spn_GetCustomerNo() WITH VALUES

Now when I attempt to do this...

ALTER TABLE tm_spn_equip_def DROP COLUMN Customer_No

I get an error:

Msg 5074, Level 16, State 1, Line 1
The object 'DF__tm_spn_eq__Custo__019E3B86' is dependent on column 'Customer_No'.
Msg 4922, Level 16, State 9, Line 1
ALTER TABLE DROP COLUMN Customer_No failed because one or more objects access this column.


How can I get around this?

TIA!

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Dec 13, 2007

Hi all!

One more question: how can i drop a column from a table?

Greetings

landau

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Jul 20, 2005

Hello,I'm just returning to MS SQL Server after two years of dealing withSybase ASE. I need to drop a column, using the alter table command.I keep getting an error indicating that a constraint is using thecolumn. Here is the create script for the tablecreate table mytable(col1 char(1) not null,col2 char(1) default 'A' not null)Here is the alter table command:alter table mytable drop column col2When I run it I get the following error:Server: Msg 5074, Level 16, State 1, Line 1The object 'DF__mytable__col2__114A936A' is dependent on column'col2'.Server: Msg 4922, Level 16, State 1, Line 1ALTER TABLE DROP COLUMN col2 failed because one or more objects accessthis column.Is there anyway to tell the database to drop all column constraintswhen the column is deleted?Thanks,James K.

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How Do I Drop A Column From A Table

Oct 6, 2007



I have a database that I have made using sql server 2005 express edition. I want to run a query to drop one of the columns from one of the tables. I have tried the following but had no luck.

USE database


DROP column FROM table



This is the error that I got when I tried this.


Msg 156, Level 15, State 1, Line 3

Incorrect syntax near the keyword 'FROM'.

Of course, my query had the real database, table and column names. I have generic ones that I have provided here.

Do I have to alter the table instead of dropping the column that I don't want?
Do I have to remake the table without the column that I don't want?

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Sep 25, 2007



Hello !

I am using Microsoft SQL Server 2000

I am trying to drop a column that has a constraint, executing the script inside a transaction:

BEGIN TRANSACTION

ALTER TABLE MOPTeste DROP CONSTRAINT FK_IDMOPPais


ALTER TABLE MOPTeste DROP COLUMN IDMOPPais

COMMIT

If i dont commit the drop constraint, it wont let me drop the column

Solutions?



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Dec 6, 2007

I am trying to remove the Indentity property from a column so I can do some clean up. Then will need to add it back. Adding Indentity property back is not a problem, but cant figure out how to remove it in the first place.

Any help would be greatly apprecaited.

Thanks
Dave

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May 24, 2005

Is there a way to remove the Identity property of a column in SQL Server 2000? 
The statement:
<code>
ALTER TABLE <table name> ALTER COLUMN <column name> DROP IDENTITY
</code>
returns a syntax error.
Thank you,
Jeff

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May 5, 2014

I am very new to sql and I have got this doubt.

CREATE TABLE employee
{ EMP-ID VARCHAR UNIQUE,
DESIG VARCHAR UNIQUE,
SALARY INT };

Probably this is worst table ever created :).Now How to drop UNIQUE constraint on only column lets DESIG.

if i write

ALTER TABLE employee
DROP CONSTRAINT myuniqueconstraint;

will drop constraints on both columns which I dont want.

Any query that remove UNIQUE CONSTRAINT only on DESIGN column.

and one more clarification,

ALTER TABLE employee
MODIFY SALARY INT NOT NULL;

ALTER TABLE employee
ALTER COLUMN SALARY INT NOT NULL;

which of the above two is right query to add NOT NULL constraint to the above employee TABLE?

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Jul 23, 2005

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Aug 30, 2007



I need to know definitively when I need to drop and recreate column statistics (histogram) when altering a column. Empirically, it seems I can lengthen a varchar or change a not null column to a nullable one, and then existing statistics dont' cause


Msg 5074, Level 16, State 1, Line 1

The statistics 'c1' is dependent on column 'c1'.

Msg 4922, Level 16, State 9, Line 1

ALTER TABLE ALTER COLUMN c1 failed because one or more objects access this column.


But, if I change a column to not nullable or shorten a column, I get the error.

Is this the complete description of when I need to drop and recreate column statistics and when I don't?

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Mar 25, 2006

Need help with admin scripts.

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Tried stored proc to cursor on result

fn_listextendedproperty

but couldn't get that to work.

Where are xtended props stored in db?



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Apr 18, 2008

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If there's no direct way, can someone suggest a quick way to create a new column, copy all the old values into the new column, change the primary key to the new column, and drop the old column?

Thanks.

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Apr 11, 2001

1. We have user defined type (Sql type = bit ) with rule setting it to 0
2. New column(isVIP) was created using this user defined type
3. sp_unbindrule was used to unbind rule from new column (isVIP)
4. Alter table Client drop Column isVIP !!!! (invalid syntax )

Any ideas ?
Thanks

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example:-

Update table Archivebbxfbcc
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Dec 29, 2014

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[code]....

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Dec 28, 1999

Hi folks.

Here i have small problem in transactions.I don't know how it is happaning.
Up to my knowldge if you start a transaction in side the transaction if you have DML statements
Those statements only will be effected by rollback or commit but in MS SQL SERVER 7.0 and 6.5
It is rolling back all the commands including DDL witch it shouldn't please let me know on that
If any one can help this please tell me ...........Please............
For Example
begin transaction t1
create table t1
drop table t2

then execute bellow statements
select * from t1
this query gives you table with out data

select * from t2
you will recieve an error that there is no object

but if you rollback
T1 willn't be there in the database

droped table t2 will come back please explain how it can happand.....................

Email Address:
myself@ramkistuff.8m.com

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Code:

A
B
C
D
E
F
G
H

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