Ron,
GROUP BY does not promise to return rows in order.
You must use ORDER BY for that.
Where's Larry Elkins? This is one of his favorite pet peeves.
I expected to hear from him on this. :)
Jared
"Ron Rogers" <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
02/06/02 08:13 AM
Please respond to ORACLE-L
To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
cc:
Subject: Re: Select DISTINCT question
Beth,
Without going into very much detail about the two selects. 1 will
return only the records that are distinct from each other and 2 will
return all rows in a particular order. Using 1 could result in the
elimination of records if there is more than one record that meets the
distinct criteria. Order by will show duplicate records easily.
ROR m���m
>>> [EMAIL PROTECTED] 02/06/02 09:53AM >>>
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 maReceived: from CONNECT-MTA by galottertter at
all?
TIA,
Beth
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Ron Rogers
INET: [EMAIL PROTECTED]
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
San Diego, California -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author:
INET: [EMAIL PROTECTED]
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
San Diego, California -- Public Internet access / Mailing Lists
--------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
