On Apr 30, 2007, at 11:32 AM, Tom Lane wrote:
Theo Schlossnagle <[EMAIL PROTECTED]> writes:
As a note, the return from the function is a bytea, so no decoding is
done. If I return a string with a \0 in it, then it will be clipped
short. If I return a string with a "\\000" in it, I will get the
four-character string \000. There is no way to correctly return a
binary string that contains a \0 from plperl as it stands.
That is simply incorrect.
regression=# create or replace function foo() returns bytea as $$
return 'foo\000bar';
$$ language plperl;
CREATE FUNCTION
regression=# select foo();
foo
------------
foo\000bar
(1 row)
regression=# select length(foo());
length
--------
7
(1 row)
I stand corrected.
There should be no escaping required to return a bytea from within
a pl
in postgres.
That's not a bug report, that's a proposal for a non-backward-
compatible
behavioral change. pgsql-bugs is not the forum for such proposals.
If you want to take it up in pgsql-hackers, be prepared to answer
questions about why bytea should behave differently from all other
types, and what about bytea members of arrays and records, and what
about consistency with the other PLs?
If I have a binary passthrough function in plperl,
it should just work:
create function pl_passthru(bytea) returns bytea as $$
return $_[0];
$$ language plperl;
Worksforme.
regression=# select pl_passthru(E'foo\\000bar'::bytea);
pl_passthru
-------------
foo\000bar
(1 row)
regression=# select length(pl_passthru(E'foo\\000bar'::bytea));
length
--------
7
(1 row)
Okay. Not a bug.
I think that requiring a user to \ decode binary input is very very
expensive as well as having to \ encode it. It seems wrong to me.
Are you interested in moving this patch to the feature queue? I get
the impression you don't like the idea of making the bytea type work
more seamlessly in perl. Perhaps I'm mistaken.
// Theo Schlossnagle
// [EMAIL PROTECTED]: http://omniti.com
// Esoteric Curio: http://www.lethargy.org/~jesus/
---------------------------(end of broadcast)---------------------------
TIP 2: Don't 'kill -9' the postmaster
