On Fri, Jun 03, 2005 at 14:23:37 +0200,
Markus Bertheau ??? <twanger(at)bluetwanger(dot)de> wrote:
> This also bypasses the built in postgresql boolean literal parsing.
>
> I think casting from text to boolean should be possible, and use the
> same algorithm that's used when casting from "unknown" to boolean.
You probably want boolin.
area=> select boolin('0'), boolin('f'), boolin('false');
boolin | boolin | boolin
--------+--------+--------
f | f | f
(1 row)
Note that the function will error out if the argument is garbage.