Re: Datetime operators (was: Re: [SQL] Another Date question)

why

create table mymy (mydate datetime default (now() + '60 days'::timespan ));

does not work?

On Fri, 3 Dec 1999, Thomas Lockhart wrote:

> > > I'd like to create a table with a datetime field that defaults to +60
> > > days.
> > > mydate datetime default 'now() +(at)60 days',
> > > ...
> > Where is a problem?
>
> You have enclosed your default values into a large string, rather than
> letting them be evaluated as an expression:
>
> mydate datetime default (now() + '60 days')
>
> where the outer parens are optional.
>
> > datetime + '10 day' or
> > datetime + '2 year' ..etc.
> > But I'm not sure what is better or exists it in other SQL.
>
> afaik this is the simplest and most direct way to do it. Note that you
> can include other timespan fields in the constant:
>
> mydate datetime default (now() + '60 days 10 hours')
>
> HTH
>
> - Thomas
>
> --
> Thomas Lockhart lockhart(at)alumni(dot)caltech(dot)edu
> South Pasadena, California
>
> ************
>