Store procedure returned null value

I have problem on stored procedure after executing it

This is the select statement inside the stored procedure:
select sum(amt) as total from orders where order_Date = today

The problem occurs when there is no record or orders on a specific date.
How could I check if the value returned is null or there is no record found in vb.net?

Hope someone could help me on this. Thanks!!!
[414 byte] By [jhoanofarch] at [2007-11-19 3:18:38]
# 1 Re: Store procedure returned null value
2 solutions:

in SQL (Ms SQL) for example:
SELECT IsNUll((select sum(amt) as total from orders where order_Date = today),0)


in VB use .IsNull (as I remember) method of DataReader or DataTable
Krzemo at 2007-11-10 3:30:57 >
# 2 Re: Store procedure returned null value
SQL Server 2000

SELECT COALESCE(sum(amt),0) as total from orders where order_Date = today
ddrib at 2007-11-10 3:31:57 >