From: | Martin Gainty <mgainty(at)hotmail(dot)com> |
---|---|
To: | "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: Catch exception from plpy |
Date: | 2010-04-24 13:42:20 |
Message-ID: | BLU142-W2522B02569B7C2D3A0FC7AE060@phx.gbl |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-general |
use try with exception e.g.
create or replace function test_tryex() returns void AS
'
try:
plpy.execute('create table tmp_foo (v1 int);
plpy.execute('select * from tmp_foo);
except Exception, ex:
plpy.notice("FUBAR!-- %s" % str(ex))
return "FUBAR!"
return "test_tryex function has succeeded"'
'
LANGUAGE plpythonu;
Martin Gainty
______________________________________________
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> Date: Sat, 24 Apr 2010 14:48:33 +0200
> From: dario(dot)ber(at)libero(dot)it
> To: pgsql-general(at)postgresql(dot)org
> Subject: [GENERAL] Catch exception from plpy
>
> Hello,
>
> Could someone show me how to catch exceptions generated by plpy.execute()?
> From the documentation and other posts I understand that you need to call plpy.
> error() but I still cannot figure out how to use it.
>
> For example, say I need a function that creates table foo if it doesn't
> exists, otherwise returns the rows in foo. Initially I thought the following
> shouldl work... but it doesn't!
>
> --
> create or replace function test_tryex() returns void AS $$
> try:
> plpy.execute('create table tmp_foo (v1 int);')
> except:
> plpy.execute('select * from tmp_foo;')
> $$
> language plpythonu;
> --
> -- If tmp_foo already exists I get:
> select test_tryex();
>
> ********** Error **********
>
> ERROR: relation "tmp_foo" already exists
> SQL state: 42P07
> Context: SQL statement "create table tmp_foo (v1 int);"
>
>
> Many thanks in advance
> Dario
>
> --
> Sent via pgsql-general mailing list (pgsql-general(at)postgresql(dot)org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-general
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