Re: change sql statement and make it simple

"Cobra__77" <Cobra__77_at_hotmail.com> wrote in message news:m5X95.11600$Tb7.78632_at_news-server.bigpond.net.au...
> I have the following query....it checks which half of the year is last
> month..
> and then if it is first half it returns 1-Jan-2000 and if it is second
 half
> 1-July-2000
>
> is there a way to get rid of the in-line view and do it in one go...and
 not
> use a function on custmer contact_date too...
>
> any ideas...
> thanks
>
> select customer_id
> from customers a,
> (select trunc(add_months(sysdate,-1),'year') begin_date
> from dual
> where to_number(to_char(add_months(sysdate,-1),'mm')) between 1 and
 6
> union
> select add_months(trunc(add_months(sysdate,-1),'year'),6) begin_date
> from dual
> where to_number(to_char(add_months(sysdate,-1),'mm')) between 7 and
 12
> ) b
> where a.contact_date > b.begin_date
>
>
>
>

Interesting challenge! Thank you!

Is this simple enough?
select add_months(trunc(to_date('&&datum','dd-mm-yy'),'year')

      ,(round(to_char(to_date('&&datum','DD-MM-RR'),'Q')/2) - 1) * 6) from dual
/

The second argument to add_months calculates the quarter, divs the quarter by 2 and multiplies that by 6 to get the correct number of months to be added.

Hth,

Sybrand Bakker, Oracle DBA Received on Sun Jul 09 2000 - 00:00:00 CDT