Re: Use of 'now'

On Tue, 13 Nov 2001, Bruce Momjian wrote:

> > > 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.
>
> You would think so, but in fact 'current' does change for each insert:
>
>     test=> create table dd (x timestamp default 'current', y int);
>     CREATE
>     test=> insert into dd (y) values (1);
>     INSERT 16596 1
>     test=> insert into dd (y) values (1);
>     INSERT 16597 1
>     test=> select * from dd;
>                    x               | y
>     -------------------------------+---
>      2001-11-13 22:39:18.283834-05 | 1
>      2001-11-13 22:39:19.196797-05 | 1
>     (2 rows)
>
>

Or this:

 PostgreSQL 7.0.3 on i386-unknown-freebsdelf4.2, compiled by gcc 2.95.2
(1 row)

template1=# create table dd (x timestamp default 'current', y int);
CREATE
template1=# insert into dd (y) values (1);
INSERT 1407083 1
template1=# insert into dd (y) values (1);
INSERT 1407084 1
template1=# select * from dd;
    x    | y
---------+---
 current | 1
 current | 1
(2 rows)


Must be since 7.0.3?

Vince.
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