On Wed, Apr 27, 2011 at 3:46 AM, Jack Douglas
<jack(at)douglastechnology(dot)co(dot)uk> wrote:
>
> This sounds like an oxymoron to me. Perhaps that sentence should be changed
> to:
>
> The boolean type can have one of three states: "true" or "false" and
> "unknown".
if my boolean arithmetic is not wrong the above expression is bad.
better expressed is: "true", "false" or "unknown"...
--
Jaime Casanova www.2ndQuadrant.com
Professional PostgreSQL: Soporte y capacitación de PostgreSQL