Re: RPGLE native I/O and SQL Tables/Views/Indexes

A Table = non-keyed, Physical File
A View = non-keyed, single-format, Logical File
An Index = a keyed, non-join, single format, Logical File

RPG IV operations can be used in exactly the same manner as with the
"native" (DDS + CRTxx) defined objects.

To complicate matters, don't forget you CAN use CHAIN, SETLL etc. on a
View - if processing by relative record number, (i.e. non-keyed
processing).

HTH,
Brian.

On 27/09/2021 17:23, Alan Campin wrote:

it's not that simple. A physical file created with DDS and a table

created

with SQL are the same thing to RPG. If the table has an index, you can do
operations like Chain and Setll just like a DDS defined table.

Views are more complex. Views don't have indexes so the only thing that

you

could do with a view in an RPG program is read it sequentially or write

to

it.

An SQL index looks like a logical file to an RPG program so you could use
it like a logical file. That's not normally how you would do it. You

would

define an SQL index and then define a logical and it should share the
access path (Index) and it is just another logical to RPG.



On Mon, Sep 27, 2021 at 9:11 AM K Crawford <kscx3ksc@xxxxxxxxx> wrote:

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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