Re: PL/Python: domain over array support

This does change the behavior of any existing functions that return a domain over array. For example:

postgres=# create domain intarr as integer[];
CREATE DOMAIN
postgres=# create function intarr_test() returns intarr as $$
return '{1,2}'
$$ language plpythonu;
CREATE FUNCTION

Before patch:

postgres=# select intarr_test();
 intarr_test
-------------
 {1,2}
(1 row)

After patch:

postgres=# select intarr_test();
ERROR:  invalid input syntax for integer: "{"
CONTEXT:  while creating return value
PL/Python function "intarr_test"


The new behavior is clearly better, but it is an incompatibility nonetheless. I don't do anything with PL/python myself, so I don't have a good feel of how much that'll break people's applications. Probably not much I guess. But warrants a mention in the release notes at least. Any thoughts on that?

- Heikki