IMHO since they both require Oracle to sort the table and you are doing a full table scan in both cases the performance would be virtually the same.
Rick
"Seefelt, Beth"
<Beth.Seefelt@tetl To: Multiple recipients of list
ORACLE-L <[EMAIL PROTECTED]>
eyusa.com> cc:
Sent by: Subject: Select DISTINCT question
[EMAIL PROTECTED]
02/06/2002 09:53
AM
Please respond to
ORACLE-L
Hi everyone,
Is one of these more correct than the other ?
1) select distinct customer_number, address_code from orders;
2) select customer_number, address_code
from orders
group by customer_number,address_code;
Our developers do the 1st one mostly. It always bothers me, I'm not sure
why, I guess I just think of it as looking ambiguous even though it does
return the same result as the second option.
Any opinions? Does it matter at all?
TIA,
Beth
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