Please don't try this at home, especially on tables of a million rows, but you can "join" on almost anything. Once I needed a "partial" Cartesian join (the primary had maximum one row only and the other one had up to a rare-as-hen's-teeth two rows) and used join on 1=1.
I say "partial" because there were a LOT more files that had to join to those.
It seemed a better approach for the query than a subselect file or CTE.
-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Roger Harman
Sent: Monday, November 30, 2015 12:00 PM
To: Midrange Systems Technical Discussion
Subject: Re: SQL "like" from a subselect
Join on a "like"? Haven't seen that before. Maybe later this week when I have some free time (Ha!). Month-end today.......
Thanks.
________________________________________
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxx> on behalf of Mark Murphy/STAR BASE Consulting Inc. <mmurphy@xxxxxxxxxxxxxxx>
Sent: Monday, November 30, 2015 8:06 AM
To: Midrange Systems Technical Discussion
Subject: Re: SQL "like" from a subselect
have you tried:
where exists (select * from namefile where lower(UPTEXT) like srchname)
This, like your below listed attempt, will not show you what comes up in the subselect, but will tell you which of your rows have a match.
Or if you want to see the matching records you can try something like:
select * from profiles
join namefile on lower(UPTEXT) like srchname
profiles is a guess at the name of the file holding your profiles.
Mark Murphy
STAR BASE Consulting, Inc.
mmurphy@xxxxxxxxxxxxxxx
-----Roger Harman <roger.harman@xxxxxxxxxxx> wrote: -----
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
From: Roger Harman <roger.harman@xxxxxxxxxxx>
Date: 11/25/2015 02:39PM
Subject: SQL "like" from a subselect
I'm trying to match employee names (first or last) to text in the user profile. It's just a rough match to help operations in a task.
I have all the first & last names in a file and the user profile info in another.
I've tried "where lower(UPTEXT) like (select srchname from namefile)" but it fails with SQL0811 "Result of SELECT more than one row".
The search names are in the form of "%roger%". I can match singles in STRSQL.
I can whip up an RPG with %scan() but curious if I can make the subselect work. There are hundreds of profiles and thousands of employees.
Thanks in advance.
Roger Harman
COMMON Certified Application Developer - ILE RPG on IBM i on Power OCEAN User Group
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