A SQL Table has no key. It may have a primary key constraint. With a primary
key constraint you can use all native I/O operations, without only the
unkeyed operations.
A view is always unkeyed, so there is no way to use any of the keyed
operations such as SETLL, SETGT, CHAIN, READE etc.
An index can be compared with a keyed logical file so you can use all
operations.
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!"
?Train people well enough so they can leave, treat them well enough so they
don't want to.? (Richard Branson)
-----Original Message-----
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of K Crawford
Sent: Montag, 27. September 2021 18:11
To: RPG400-L@xxxxxxxxxxxxxxxxxx
Subject: RPGLE native I/O and SQL Tables/Views/Indexes
I am trying to help someone and clarify for me the following. I don't think
I am typing in my searches correctly. What I am looking for is:
What native RPGLE I/O can you do over a SQL Table?
What native RPGLE I/O can you do over a SQL View?
What native RPGLE I/O can you do over a SQL Index?
A chart something like:
I/O Table View Index
Read Yes Yes Yes
Reade No No Yes
Readp x x x
Readpe x x x
Chain x x x
SetLL x x x
SetGT x x x
Delete x x x
Write x x x
--
KCrawford
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