How about
num2:=nvl(num2,0);
Jim
"abc" <abc_at_abc.com.au> wrote in message
news:b3hcvh$rrm$1_at_mws-stat-syd.cdn.telstra.com.au...
> Hi All,
>
> I have a PL/SQL to do following calculation:
>
> Total = NUM1 + NUM2;
>
> SELECT a INTO NUM1 FROM T1;
> SELECT b INTO NUM2 FROM T2;
>
> As b has no return row therefore NUM2 is undefined. Total as a result
is
> also undefined (PL/SQL crashed with "No defined value ...")
>
> Is there any way to return b as ZERO if no row returned ???
>
> I have tried
>
> SELECT NVL(
> (SELECT b INTO NUM2 FROM T2), 0) FROM DUAL;
>
> But PL/SQL did not allow me to use SELECT ...(SELECT !
>
> SELECT NVL(NUM2,0) FROM DUAL doesn't work.
>
>
>
>
>
Received on Tue Feb 25 2003 - 21:48:07 CST
