Oracle FAQ | Your Portal to the Oracle Knowledge Grid |
![]() |
![]() |
Home -> Community -> Mailing Lists -> Oracle-L -> Re: [Q] what difference between count(0), count(1) and count(*)
i think count(*) gives count of all columns .. where as count(col1) gives count for col1 ignoring nulls in col1
Deepak
--- aaa aaa <mccdba_at_hotmail.com> wrote:
> Can anyone tell me what is difference between :
>
> select count(*) ... from ..
>
> select count(0) ...
>
> select coun (1) ...
> select count(2) ...
>
>
> Thanks.
>
>
>
-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Deepak Thapliyal INET: deepakthapliyal_at_yahoo.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Wed Oct 24 2001 - 13:27:02 CDT
![]() |
![]() |