Re: My First UDF

[Steve Richter <stephenrichter@xxxxxxxxx>]

I find it a lot easier to code SQL functions in SQL. No need for RPG.  If
you have to, the SQL code can call an RPG program .

then use SPECIFIC to assign the name of the service program the system
creates for the sql function.  That makes it relatively easy to debug using
STRDBG.

here is a sample SQL function:

CREATE OR REPLACE FUNCTION dwhpf30c_isDropShip(
inCucode        char(6),
inOrdnum        decimal(9,0))
RETURNS      char(1)
language sql
SPECIFIC    DWHPF30CFB
SET OPTION  DATFMT = *ISO,   DLYPRP = *YES, DBGVIEW = *SOURCE,
            USRPRF = *OWNER, DYNUSRPRF = *OWNER, COMMIT = *CHG
BEGIN

DECLARE     VMSG CHAR(80) ;
DECLARE     VCMDSTR CHAR(256) ;
declare     vCount int default 0 ;

select      count(*)
into        vCount
from        dwhpf30d a
where       a.ordcust = inCucode and a.ordordnum = inOrdnum
            and a.ordwhc = 'PNY'
fetch first row only ;
if          vCount > 0 then
return      'Y' ;
else
return      'N' ;
end if ;

END




On Thu, Nov 18, 2021 at 7:15 PM Art Tostaine, Jr. <atostaine@xxxxxxxxx>
wrote:

> I have a program that takes a manifest# and a pick ticket# and returns a
> qty.  I would like to have it as a UDF so I could use it to UPDATE a table
> with that info.
>
> I found some info on the great rpgpgm.com, so I wrote my UDF wrapper.
> My Full code here, https://code.midrange.com/9430223040.html,
>
> Snip here
>   dcl-proc GetPPKQty export ;
>     dcl-pi GetPPKQty int(5);
>       ppManifest zoned(8) const ;
>       ppInvoice char(16) const;
>     end-pi ;
>     dcl-s outPcs int(5) ;
>
> My SQL Create
>   CREATE OR REPLACE FUNCTION WHSLIB.WHSO643R (ppManifest
> DECIMAL(8,0),ppInvoice Char(16))
>     RETURNS INT
>     LANGUAGE RPGLE
>     DETERMINISTIC
>     NO SQL
>     EXTERNAL NAME 'WHSLIB/WHSO643R(GETPPKQTY)'
>     PARAMETER STYLE GENERAL
>     PROGRAM TYPE SUB ;
>
>
> When I try to run my SQL update I get a decimal error.
>
> select sdinvoice, sdmanif#,  sdqty, whso643r(sdmanif#,sdinvoice)
> from xxxr021
>
> I tried to STRDBG on the UDF but that I get  Pointer not set for location
> referenced.
> --
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