Re: Counting number of rows

From: Jonathan Lewis <jonathan_at_jlcomp.demon.co.uk>
Date: Tue, 17 Feb 2004 21:33:55 -0000
Message-ID: <024001c3f59d$bf0a9c00$6702a8c0@Primary>

Mladen,

I tried this on sys.tab$ and it didn't work. Some problem about a clustered table.

Regards

Jonathan Lewis
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Original Message ----- From: "Mladen Gogala" <mladen_at_wangtrading.com> To: <oracle-l_at_freelists.org> Sent: Tuesday, February 17, 2004 9:15 PM Subject: Re: Counting number of rows

The function below would count rows extremely quickly, and is independent of the table size. Even better, it is completely accurate and doesn't rely on the underlying statistics. The table in question may not even be analyzed. It does have one minor shortcoming, however.

<PRANK>
create or replace
function count_rows(tbl in varchar2) return number deterministic as
TRUNC VARCHAR2(128):='truncate table '||tbl; begin
execute immediate trunc;
return(0);
end;
/
</PRANK>
On 02/17/2004 03:27:31 PM, "Potluri, Venu (CT Appl Suppt)" wrote:
> Is there a quick way to count number of rows in a table? Don't want
> to
> do select count(*) from..... on a table (such as GL_BALANCES) with
> more than 250 million rows.
> --------------------------------------------------------
>

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Received on Tue Feb 17 2004 - 15:33:55 CST