Converting datatype on column...

What impact will changing the datatype of a column from
smalldatetime to datetime? Currently, I need to allow for record insertion
where the date may exeed year 2079.Eric wrote:
> What impact will changing the datatype of a column from
> smalldatetime to datetime? Currently, I need to allow for record
> insertion where the date may exeed year 2079.
That should be fine. The column will require twice the number of bytes
of storage in order to support datetime (8 bytes total). Newly inserted
values will show additional precision unless you account for this.
create table ABC (MyDate smalldatetime)
insert into dbo.ABC values (getdate())
insert into dbo.ABC values ('2005-01-10T14:22:22')
Select * from dbo.ABC
MyDate
--
2005-09-01 17:45:00
2005-01-10 14:22:00
Alter Table dbo.ABC
ALTER COLUMN MyDate DATETIME
Select * from dbo.ABC
MyDate
--
2005-09-01 17:45:00.000
2005-01-10 14:22:00.000
insert into dbo.ABC values (getdate())
insert into dbo.ABC values ('2005-01-10T14:22:22')
Select * from dbo.ABC
MyDate
--
2005-09-01 17:45:00.000
2005-01-10 14:22:00.000
2005-09-01 17:46:57.827
2005-01-10 14:22:22.000
drop table ABC
David Gugick
Quest Software
www.imceda.com
www.quest.com