Re: SQL Stored Procedure with Result Set

On 3/26/2013 5:48 PM, Anderson, Kurt wrote:

I have a stored procedure and it was returning an output parameter. People are whining because of the effort they have to go through to consume an output parameter (in Java). Ok, fine (yet here I am, going through 'effort,' but I like to learn so I guess that's the difference). So I'm trying to switch the stored procedure to return the SmallInt value as a single result set. However it doesn't seem to be working.

In the create procedure statement, after the parameter list, I have:
Result Sets 1
Language SQL

At the very bottom of the procedure (just before the "End"), I have:
DECLARE rsCursor CURSOR FOR SELECT rtnTracking FROM sysibm/sysdummy1;
OPEN rsCursor;
SET RESULT SETS CURSOR rsCursor;

rtnTracking is a local variable:
Declare rtnTracking SmallInt;

First, I'm getting an error.
Second, I hope there's a better way to set a local variable to a result set w/o doing a "fake" select.

The error (on the Declare Cursor line):
Position 13 Token RSCURSOR was not valid. Valid tokens: GLOBAL.

I'm at IBM i 7.1.

You don't have to make a fake SQL call in order to return a result set;
You can return an array - even an array of one element.

// this is the result set we'll be returning
// the names here are what the caller will see
drs ds dim(1000) qualified
d count 10i 0
d name 50 varying

// here's the part that tells the database manager how to handle
// the result set
exec sql
set result sets array :RS for :ROWCOUNT rows;

*inlr = *on;

--buck