And don't forget about isql/show.e & isql/extract.e

Additionally, it *is* more difficult to write a UDF that uses descriptors -
the disipline about how to use the memory space passed to the UDF in
the descriptor has to be there.

Dave

-----Original Message-----
From: Jim Starkey [mailto:jas@...]
Sent: Thursday, April 06, 2000 2:40 PM
To: IB-Architect@egroups.com; IB-Architect@egroups.com
Subject: Re: [IB-Architect] UDF param passing issues


At 05:12 PM 4/6/00 -0400, Doug Chamberlin wrote:

>At 4/6/00 05:00 PM (Thursday), David Schnepper wrote:
>
>>Actually, there is a way that a UDF can receive parameters "BY

DESCRIPTOR".

>>It's yet another of those GDML features that work, but don't have SQL
>>syntax to
>>support them.
>
>I don't understand why the SQL syntax is relevant except in defining a UDF
>you would have to say "pass params by descriptor when using this UDF".
>Then, assuming the UDF is properly written to use the descriptors instead
>of the usual param passing mechanism, everything should work, right?
>

Somebody, long gone, thought it was more important to be SQL compliant
than useful. Happily, the current administration is more enlightened.

The modules you want are dsql/parse.y, dsql/pass1.c, and dsql/ddl.c .

I can't wait for Code Liberation Day.

Jim Starkey

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