Re: sql question

Before claiming 'it won't work', why don't you check ???

Both versions will.

<Kenneth Koenraadt> wrote in message
news:414db170.650531_at_news.inet.tele.dk...
> On Sun, 19 Sep 2004 09:20:02 GMT, "Dave"
> <david.sharples3_at_ntlXworld.com> wrote:
>
> >
> >"Mirlok" <tima_at_azercell.com> wrote in message
> >news:2r501vF167harU1_at_uni-berlin.de...
> >> Hi,
> >> How can this be rewritten as a single SQL script?
> >>
> >> de
> clare
> >> sumtot number;
> >> sum1 number;
> >> sum2 number;
> >> begin
> >> select sum(column) into sum1 from table where condition1;
> >> select sum(column) into sum2 from table where condition2;
> >> sumtot:=sum1-sum2;
> >> end;
> >>
> >> Thank you in advance
> >>
> >>
> >>
> >>
> >
> >select (sum(column) from table where condition1) - (sum(column) from
table
> >where condition2) from dual;
> >
> >
>
> Won't work. This will :
>
> select sum1-sum2 from
> (select sum(column) as sum1 from table where condition1) ,
> (select sum(column) as sum2 from table where condition2) ;
>
> - Kenneth Koenraadt
>
>
>
>
>
Received on Sun Sep 19 2004 - 12:43:34 CDT