Showing posts with label books. Show all posts
Showing posts with label books. Show all posts

Thursday, March 22, 2012

on Check Constraint expressions

I am creating a check constraint on a field (GRID_NBR) for values between 1 & 99. I am a little confused on creating the expression for it (Books online is vague).

Can I use the following expression: GRID_NBR BETWEEN 1 AND 99

Or do I have to use: GRID_NBR > 0 AND GRID_NBR < 100

Thanks!I am creating a check constraint on a field (GRID_NBR) for values between 1 & 99. I am a little confused on creating the expression for it (Books online is vague).

Can I use the following expression: GRID_NBR BETWEEN 1 AND 99

Or do I have to use: GRID_NBR > 0 AND GRID_NBR < 100

Thanks!

I found my own answer (in Books Online)...here's the example it gave on the Constraint page...

CREATE TABLE cust_sample
(
cust_id int PRIMARY KEY,
cust_name char(50),
cust_address char(50),
cust_credit_limit money,
CONSTRAINT chk_id CHECK (cust_id BETWEEN 0 and 10000 )
)

Tuesday, March 20, 2012

::Info Request::

Please suggest good books for SQL Server 2005
Thx MuchGoto http://mspress.microsoft.com and do a search for "SQL 2005"
Peace & happy computing,
Mike Labosh, MCSD MCT
Owner, vbSensei.Com
"Escriba coda ergo sum." -- vbSensei