Hi all I noticed the following beaviour, if a command in a sql function
fails the other statements fail like if the entire function where
surrounded by a begin-commit block. While I find this behaviour nice, as
far as I could find, this behaviour is not documented. I wished to
create a function that depends on such way of working but I cannot trust
that sql functions will continue to work that way on the next postgresql
So, is it documented somewhere?
I'm linking to a pastebin file that exemplifies the behaviour.
 - http://www.postgresql.org/docs/9.1/static/sql-createfunction.html
 - http://pastebin.com/LWfFgH7L
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