Re: Consuming a result set

[Scott Klement <rpg400-l@xxxxxxxxxxxxxxxx>]

Hi Buck,

To the best of my knowledge. there's no way to use the Embedded SQL 
precompiler to read a result set from a stored procedure.

You can use CLI, JDBC, QShell, RUNSQLSTM, or a variety of other methods 
to run a stored procedure and get a result set back.  But not embedded SQL.

Also, RPG is capable of reading the result set from other SQL 
statements, such as SELECT -- just not from stored procedures.

I've always thought it would be neat to write a tool that generates a 
UDTF that calls a stored procedure and returns it's results.  Probably, 
a tool like this could be written so that you don't have to actually 
code the UDTF...    but once generated, you could call the UDTF from 
embedded SQL and you'd get back the data from the stored procedure.

Last I heard, IBM was working on the problem, too..   so in a future 
release, you may see support for stored procedure result set in RPG.  (I 
suspect it's one of their most common complaints.  If it's not, it 
should be!)


Buck wrote:
> Over on the MIDRANGE-L list it was noted that RPG can consume a result
> set without resorting to SQL CLI.
>
> The scenario is: a central system fires off stored procedures on
> multiple remote systems (most not IBM i) and consumes the result sets in
> order to aggregate the many systems into one unified database.
>
> I don't know how to consume those result sets in RPG.  Does anyone have
> a manual page I can read to educate myself?
>   --buck