Re: [SQL] function to find difference between in days between two dates

2007/6/14, Martijn van Oosterhout :
> On Thu, Jun 14, 2007 at 09:00:12AM +0200, Pavel Stehule wrote:
> > Hello
> >
> > PostgreSQL hasn't any official function for it. If you need it, you
> > can write own function
>
> Not true. Anything that is done by an operator as actually done by a
> function. So the function exists:
>
> # \df date_mi
>                        List of functions

I know about it, but it's undocumented

Pavel