Re: Stored Procedures in RPG

["David Morris" <David.Morris@xxxxxxxxxxxxx>]

Joe,

DB2 on other platforms supports a table level UDF that would be
awesome if implemented on the iSeries. They allow you to specify
a UDF in place of a table on a select statement.

Another interesting idea with Java is to implement your own JDBC
driver. I recently read an article that described building a JDBC
driver that worked over XML files. This gave access to XML data
as though it were a result set. Here is a link if you are interested:

http://www.devx.com/premier/mgznarch/Javapro/2001/01dec01/jo0112/jo0112-1.asp

David Morris

>>> joepluta@PlutaBrothers.com 02/21/02 09:18PM >>>
Mohammad Tanveer asked a question a week or so ago about SQL stored
procedures in RPG that piqued my interest.

Let's say as a thought exercise that I decided to design a system
where
programs returned data exclusively via result sets.  This would have
the
portability benefits that are always mentioned when SQL is discussed.

So, I would write "server" programs that returned result sets, and
"client"
programs that asked for them.  I'm relatively comfortable with writing
EXEC-SQL statement that actually do SELECT statements, but I guess I'm
not
sure about the syntax of calling a stored procedure, especially one
that
accepts parameters and returns a result set.

I'm similarly in the dark about how the server program receives the
parameter data and parses it out, and how it builds the result set and
returns it, although my research so far shows that you basically create
an
array of records, and return it.  It's the exact syntax there that
eludes
me.

So I guess I'm looking for an end-to-end example of an RPG program
using the
stored procedure syntax of SQL to call a second RPG program that
returns a
result set.  If someone could point me in the right direction, I'd be
much
obliged, and I think this woud answer Mohammad's question as well.
(Well,
I'm sure it's overkill for his question, but then I'm nowhere near as
versed
in SQL as he and many of you are.)

Joe