How to print - when query returns nothing

Hi All
I have query...
select sum((sum(nvl(ac.amtsourcedr,0))-sum(nvl(ac.amtsourcecr,0)))) as balance
from fact_acct ac
where ad_client_id=1000000
and dateacct < '1/04/2010'
and ac.account_id=1000432
group by  ac.account_id
I want to print zero when query returns nothing
how to do that ..???
thanking you in advance
Regards
gaurav

use NVL
select nvl(sum((sum(nvl(ac.amtsourcedr,0))-sum(nvl(ac.amtsourcecr,0)))),0) as balance
from fact_acct ac
where ad_client_id=1000000
and dateacct < '
and ac.account_id=1000432
group by ac.account_idAnd yes you need to remove the Group By as stated by Toon, forgot to mention it
Edited by: Karthick_Arp on May 27, 2010 4:04 AM

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                                3124, 3040, 3125, 3041, 3126, 3042, 3127, 3043,
                                3128, 3044, 3129, 3045, 3130, 3046, 3131, 3047,
                                3132, 3048, 3133, 3049, 3134, 3050, 3135, 3051,
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    Edited by: BluShadow on 17-May-2011 15:01
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    ~~~~~~~~~~~~~~~
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