Thanks but I have no key - I want to ensure RRN.
I have tried to add ORDER BY RRN but it doesn't seem to like it. Is there a trick to get ORDER BY RRN to work? Must ORDER BY contain only fields in the record?
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of DeLong, Eric
Sent: Tuesday, February 12, 2013 4:49 PM
To: Midrange Systems Technical Discussion
Subject: RE: how to retrieve records and make sure they arrive in RRN sequence
Specify an ORDER BY clause after the second statement in your UNION...
Arrival sequence means NOTHING in sql. Never count on it, even if it LOOKS like you're getting what you want. The only way to ensure an ordered result is to specify the ORDER BY clause.
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Stone, Joel
Sent: Tuesday, February 12, 2013 4:33 PM
To: 'Midrange Systems Technical Discussion'
Subject: SQL: how to retrieve records and make sure they arrive in RRN sequence
Normally records seem to arrive in RRN sequence - if no other ORDER BY is stated.
However, when I use UNION to concat two SELECT results together, they are arriving in a random sequence.
How can I assure that the result set is in RRN seq?
However, I don't think I can include RRN in the SELECT because that field is NOT in the result table.
create table qtemp/memotext as
(select * from mdcmdct
select * from mdcmtx1
) with data;
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