Обсуждение: pgsql 7.4b2 bug on column defaults?

Hi,
just testing beta2 I got strange things on default values with functions:

create table test2 (i integer, t timestamp default 'now()');

test1=# \d test2                                          Table "public.test2"Column |            Type             |
                        
 
Modifiers
--------+-----------------------------+-------------------------------------------------------------------i      |
integer                    |t      | timestamp without time zone | default '29/08/2003 
 
11:26:23.937421'::timestamp without time zone


test1=# insert into test2 values(1);
INSERT 9841455 1
test1=# insert into test2 values(1);
INSERT 9841456 1
test1=# insert into test2 values(1);
INSERT 9841457 1

test1=# select * from test2;i |             t
---+----------------------------1 | 29/08/2003 11:26:23.9374211 | 29/08/2003 11:26:23.9374211 | 29/08/2003
11:26:23.937421
(3 rows)


Seems that functions are valuated when the table is created,
It is a known change or a bug ?

thanks,
Giuseppe



-- 
-------------------------------------------------------
Giuseppe Tanzilli        g.tanzilli@gruppocsf.com
CSF Sistemi srl            phone ++39 0775 7771
Via del Ciavattino 
Anagni FR
Italy

Hi,
I see it  work without quotes around function,
but I got it from a 7.2 dump with quotes around it.
Maybe it require a note for people dumping from 7.2,
I don't have 7.3 around to try, sorry

bye


Giuseppe Tanzilli - CSF wrote:

> Hi,
> just testing beta2 I got strange things on default values with functions:
>
> create table test2 (i integer, t timestamp default 'now()');
>
> test1=# \d test2
>                                           Table "public.test2"
> Column |            Type             |                             
> Modifiers
> --------+-----------------------------+------------------------------------------------------------------- 
>
> i      | integer                     |
> t      | timestamp without time zone | default '29/08/2003 
> 11:26:23.937421'::timestamp without time zone
>
>
> test1=# insert into test2 values(1);
> INSERT 9841455 1
> test1=# insert into test2 values(1);
> INSERT 9841456 1
> test1=# insert into test2 values(1);
> INSERT 9841457 1
>
> test1=# select * from test2;
> i |             t
> ---+----------------------------
> 1 | 29/08/2003 11:26:23.937421
> 1 | 29/08/2003 11:26:23.937421
> 1 | 29/08/2003 11:26:23.937421
> (3 rows)
>
>
> Seems that functions are valuated when the table is created,
> It is a known change or a bug ?
>
> thanks,
> Giuseppe
>
>
>


-- 
-------------------------------------------------------
Giuseppe Tanzilli        g.tanzilli@gruppocsf.com
CSF Sistemi srl            phone ++39 0775 7771
Via del Ciavattino 
Anagni FR
Italy

Giuseppe Tanzilli - CSF <g.tanzilli@gruppocsf.com> writes:
> create table test2 (i integer, t timestamp default 'now()');

Use "DEFAULT now()".  I'm surprised you didn't get a syntax error from
the above.

> It is a known change or a bug ?

It's an intentional change, yes.
        regards, tom lane