Re: return next and pl/perl

Eric,

You might check out this thread:

http://archives.postgresql.org/pgsql-general/2005-06/msg00527.php

Someone can almost certainly point to a better thread, but it is a
start....

Sean

On Jun 13, 2005, at 12:41 PM, Eric E wrote:

> Hi David,
>     I ended up doing what you suggest, and it seems to work OK right now.
>  I'll definitely look for return_next in 8.1.  On a related subject,
> is there any interest in eliminating the requirement that types be
> specified at runtime, either by the function returning the type, or in
> the select statement?  It would be helpful to me, but it's not a
> dealkiller.
>
> Anyway, thanks a lot for your help, it's much appreciated.
>
> Eric
>
> On Fri, Jun 10, 2005 at 07:24:49PM -0400, Eric E wrote:
>> Hi all,
>> I'm working on implementing a function in PL/PERL that will ready
>> many rows.  As such I'd like to use return_next to keep memory usage
>> down.  When I call return next, I get the following error message:
>> ERROR:  error from Perl function: Can't call method "return_next" on
>> unblessed reference at (eval 18) line 25.
>> likewise if I use spi_return_next: ERROR:  error from Perl function:
>> Can't call method "spi_return_next" on unblessed reference at (eval
>> 16) line 25.
>> After some Google and list searching, I inferred that
>> spi_return_next may not be implemented?  Is this correct?  If so, is
>> there a workaround?
>
> For 8.0, not exactly, although you can batch the entire rowset into an
> array ref of hash references, then return that.
>
> In the forthcoming 8.1 (CVS TIP), there is a return_next() method.
>
> Cheers,
> D
> --
> David Fetter david ( at ) fetter ( dot ) org http://fetter.org/
> phone: +1 510 893 6100   mobile: +1 415 235 3778
>
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