Re: count number of weeks??

On Tue, 06 Mar 2001 06:55, rocael(at)usa(dot)net wrote:
> Hi all!
> I wonder how in PG7.0.2 I can count the number of weeks from a date
> field that I have in a table, lets say:
>
> table trial has in its fields start_date as sysdate(), and now I want to
> do a select that will give me the number of weeks from now [sysdate()]
> to the start_date.

chris=# select (select date('3 May 2001')-date(CURRENT_TIMESTAMP))::float8
/ 7.0 as "Weeks Till Start";
Weeks Till Start
------------------
8.28571428571429
(1 row)

chris=# select (select date('3 May 2001') - date(CURRENT_TIMESTAMP))::int
/ 7 as "Weeks Till Start";
Weeks Till Start
------------------
8
(1 row)

chris=# select version();
version
------------------------------------------------------------------------
PostgreSQL 7.1beta5 on i586-pc-linux-gnu, compiled by GCC egcs-2.91.66
(1 row)

That the sort of thing you wanted?
Don't know if it will work in 7.0.3, but upgrading is just a doddle.
PostgreSQL compiles faultlessly.

--
Sincerely etc.,

NAME Christopher Sawtell
CELL PHONE 021 257 4451
ICQ UIN 45863470
EMAIL csawtell @ xtra . co . nz
CNOTES ftp://ftp.funet.fi/pub/languages/C/tutorials/sawtell_C.tar.gz

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