Thursday, March 22, 2012

alter table set default value for money type column

I run the sql like the following
Alter table ItemStone add ISPurPrice money default 0
then when I select the itemStone table, I find the field ISPurPrice is still
Null, not 0, why?
I'm using SQL Server ver 8.0 (2000)
Thx!!
Kei,
Use the WITH VALUES option in your statement, or (probably better)
declare your new column as NOT NULL. Here are the choices:
Alter table ItemStone add ISPurPrice money NOT NULL default 0
Alter table ItemStone add ISPurPrice money default 0 WITH VALUES
From Books Online, topic ALTER TABLE:
WITH VALUES
Specifies that the value given in DEFAULT constant_expression is stored
in a new column added to existing rows. WITH VALUES can be specified
only when DEFAULT is specified in an ADD column clause. If the added
column allows null values and WITH VALUES is specified, the default
value is stored in the new column added to existing rows. If WITH VALUES
is not specified for columns that allow nulls, the value NULL is stored
in the new column in existing rows. If the new column does not allow
nulls, the default value is stored in new rows regardless of whether
WITH VALUES is specified.
Steve Kass
Drew University
kei wrote:

>I run the sql like the following
>Alter table ItemStone add ISPurPrice money default 0
>then when I select the itemStone table, I find the field ISPurPrice is still
>Null, not 0, why?
>I'm using SQL Server ver 8.0 (2000)
>Thx!!
>

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