Re: improvise callbacks in plpgsql

Would you be willing to write up an example of this? We often get asked
about support for WITH, so I bet there's other people who would be very
interested in what you've got.

On Tue, Nov 01, 2005 at 05:13:48PM -0500, Merlin Moncure wrote:
> > The body of callit() need be little more than OidFunctionCall1()
> > plus whatever error checking and security checking you want to
> > include.
>
> esp=# create table test(f text);
> CREATE TABLE
>
> esp=# create function test() returns void as
> $$
> begin
> insert into test values ('called');
> end;
> $$ language plpgsql;
>
> esp=# create or replace function test2() returns void as
> esp-# $$
> esp$# declare
> esp$# r record;
> esp$# begin
> esp$# select into r 'abc';
> esp$# perform callit('test()'::regprocedure, r);
> esp$# end;
> esp$#
> esp$# $$ language plpgsql;
> CREATE FUNCTION
>
> esp=# select test2();
>
> esp=# select * from test;
> f
> --------
> called
> (1 row)
>
> one word...
> w00t
>
> Merlin
>
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>

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Jim C. Nasby, Sr. Engineering Consultant jnasby(at)pervasive(dot)com
Pervasive Software http://pervasive.com work: 512-231-6117
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