Re: A creepy story about dates. How to prevent it?

The problem is that you can't do the check on the _field_ since it has
already been converted to a date.

Jon

On 19 Jun 2003, Ron Johnson wrote:

> On Thu, 2003-06-19 at 05:35, Bruno Wolff III wrote:
> > On Thu, Jun 19, 2003 at 02:43:12 -0500,
> > Ron Johnson <ron(dot)l(dot)johnson(at)cox(dot)net> wrote:
> > >
> > > OTOH, Andrew Snow's method (alway use ANSI standard YYYY-MM-DD)
> > > is guaranteed to work. Have your app convert to that format before
> > > inserting, and then PostgreSQL is guaranteed to puke if there's
> > > a problem.
> >
> > No it isn't. In 7.4:
> > area=> select '2003-20-02'::date;
> > date
> > ------------
> > 2003-02-20
> > (1 row)
>
> Whoa...
>
> It shouldn't be difficult, though, to create a function to validate
> dates, and have it be an implicit CHECK on date fields. Should it?
>
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