Commit for altering column

Does altering table columns i.e chat to nchar require a
commit?...Hope it is not as it falls under DDL..
krish
Hi,
ALTER TABLE is a DDL statement. But you need to use COMMIT if you are doing
the ALTER Table inside a transaction
(Begin Tran .. Rollback tran .. Commit tran). This is same for CREATE ,
ALTER , DROP , TRUNCATE commands
Begin tran
alter table x_df drop constraint defaul1_cons
if @.@.error !=0
rollback tran
else
commit tran
SQL server does a autocommit if you are not using a trasnaction.
alter table x_df drop constraint defaul1_cons
Thanks
Hari
MCDBA
<anonymous@.discussions.microsoft.com> wrote in message
news:4bf101c48038$708ae050$a601280a@.phx.gbl...
> Does altering table columns i.e chat to nchar require a
> commit?...Hope it is not as it falls under DDL..
> krish
|||Hi,
I am running alter scripts from a table one by one by
reading a temp tables..and it is done via a cursor..
How should i handle then, is it worth do a commit after
each statement?..Would be great if you can give your
inputs...Also would it affect performance ...
krish..

>--Original Message--
>Hi,
>ALTER TABLE is a DDL statement. But you need to use
COMMIT if you are doing
>the ALTER Table inside a transaction
>(Begin Tran .. Rollback tran .. Commit tran). This is
same for CREATE ,
>ALTER , DROP , TRUNCATE commands
>Begin tran
>alter table x_df drop constraint defaul1_cons
>if @.@.error !=0
>rollback tran
>else
>commit tran
>SQL server does a autocommit if you are not using a
trasnaction.
>alter table x_df drop constraint defaul1_cons
>Thanks
>Hari
>MCDBA
>
><anonymous@.discussions.microsoft.com> wrote in message
>news:4bf101c48038$708ae050$a601280a@.phx.gbl...
>
>.
>