Re: BUG #15836: Casting 'of' to boolean type should throw an invalid input syntax

"David G. Johnston" <david.g.johnston@gmail.com> writes:
> On Wed, Jun 5, 2019 at 2:37 PM PG Bug reporting form <noreply@postgresql.org>
> wrote:
>> Converting 'of' to a boolean type should throw an invalid input syntax.

> At this point raising a syntax error is undesirable, but the documentation
> should be modified to match the source code, which does say:

> src/utils/adt/bool.c
>  * Try to interpret value as boolean value.  Valid values are: true,
>  * false, yes, no, on, off, 1, 0; as well as unique prefixes thereof.

> The unique prefix part needs to make it to user-facing documentation.

Agreed, the docs are misleading here.  I pushed something to try to
make it better:

https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=9729c9360886bee7feddc6a1124b0742de4b9f3d

            regards, tom lane