Re: Use of 'now'

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От Vince Vielhaber
Тема Re: Use of 'now'
Дата
Msg-id Pine.BSF.4.40.0111132213030.80302-100000@paprika.michvhf.com
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Ответ на Re: Use of 'now'  (Bruce Momjian <pgman@candle.pha.pa.us>)
Ответы Re: Use of 'now'  (Bruce Momjian <pgman@candle.pha.pa.us>)
Список pgsql-docs
On Tue, 13 Nov 2001, Bruce Momjian wrote:

> > Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > > This seems wrong to me.  What does it mean when it says 'current' is
> > > resolved every time the value is retrieved?
> >
> > Nothing of interest anymore, since 'current' has been removed as of 7.2.
> > However, Thomas has yet to commit any docs updates for his recent
> > datetime-related changes ... including that one ...
>
> Seems it is still in there somewhere:
>
>     test=> create table bb (x timestamp default 'current', y int);
>     CREATE
>     test=> insert into bb (y) values (1);
>     INSERT 16591 1
>     test=> select * from bb;
>                    x               | y
>     -------------------------------+---
>      2001-11-13 21:45:22.473896-05 | 1
>     (1 row)
>
> Do you mean that 'current' is now the same as 'now'?  :-)

ISTM that 'current' when used as a default meant the time the table
was created but now() would (as one woule expect) return the current
datetime.

Vince.
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