Would using a view not be slower, as it can't be pre-optimised ?
________________________________
From: rpg400-l-bounces@xxxxxxxxxxxx on behalf of Birgitta Hauser
Sent: Tue 30/11/2010 16:37
To: 'RPG programming on the IBM i / System i'
Subject: AW: Best Practice for Returning Multiple Rows from RPG to PHP
A stored procedure would be a good solution.
Another way would be an UDTF (User Defined Table Function)
... but quite often program logic (like joining and grouping results) can
already be implemented within a view. So you neither need create and call a
stored procedure nor an UD(T)F, but can do a simple SELECT ... From VIEW
Where ... Order By.
Mit freundlichen Grüßen / Best regards
Birgitta Hauser
"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them
and keeping them!"
-----Ursprüngliche Nachricht-----
Von: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Im
Auftrag von Michael Ryan
Gesendet: Tuesday, 30. November 2010 15:53
An: RPG programming on the IBM i / System i
Betreff: Best Practice for Returning Multiple Rows from RPG to PHP
Ok...here's what I really want to know.
What is the best option for returning multiple rows of data from RPG to PHP?
Here's some of my considerations:
* I don't want to do complex processing in my PHP script; I'd rather use the
PHP to access and display data;
* The RPG program is needed because I'll be accessing multiple tables and
could be doing some complex processing;
* I need to return 1-n rows of data.
* I'm on V5R4.
When I look at a stored procedure, I see that I can return a result set.
However, I think I need to have an array or a multiple occurrence DS, which
makes me think I would need to know how many rows I would return. I was
thinking about a UDTF. Would that mean my RPG program would write (INSERT)
records to the UDTF and then my PHP script would just do a simple SELECT?
Does a global temporary table play in this?
I appreciate the insight. Thanks!
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