Thread: count number of weeks??

count number of weeks??

From
Date:
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.

Thanks for the help!
Rocael.


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Re: count number of weeks??

From
Christopher Sawtell
Date:
On Tue, 06 Mar 2001 06:55, rocael@usa.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,
compiledby 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.                                      
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