RE: Slow running Query.
- From: "Juan Carlos Reyes Pacheco" <jreyes@xxxxxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 22 Jun 2004 13:57:11 -0400
Thank Thomas I knew that, but you example is very nice, I'm adding to my
paper if you don't have nothing against it.
-------Original Message-------
From: oracle-l@xxxxxxxxxxxxx
Date: 06/22/04 13:40:25
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: Slow running Query.
FYI... SUM function (for that matter any aggregate function except COUNT, G=
ROUPING) ignore NULLs. Try this:
select sum(nvl(test,5)) from test
8
select nvl(sum(test),5) from test;
3
select nvl(sum(test),5) from test
where test is null;
5
select sum(n) from test;
3
-----Original Message-----
From: Juan Carlos Reyes Pacheco [mailto:jreyes@xxxxxxxxxxxxxxxx]
Sent: Tuesday, June 22, 2004 12:21 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: Slow running Query.
Hi Lex, why you say that, could you showme why please
I show you why I say is the same:
SQL> select * from test;
TEST
----------
1
2
Transcurrido: 00:00:00.00
SQL> select count(*) from test where test is null;
COUNT(*)
----------
1
Transcurrido: 00:00:00.00
SQL> select sum(nvl(test,0)) from test;
SUM(NVL(TEST,0))
----------------
3
Transcurrido: 00:00:00.00
SQL> select nvl(sum(test),0) from test;
NVL(SUM(TEST),0)
----------------
3
Transcurrido: 00:00:00.00
___________________________________________________________________________=
__________________________________
This electronic transmission and any attached files are intended solely for=
the person or entity to which they are addressed and may contain informati=
on that is privileged, confidential or otherwise protected from disclosure.=
Any review, retransmission, dissemination or other use, including taking a=
ny action concerning this information by anyone other than the named recipi=
ent, is strictly prohibited. If you are not the intended recipient or have =
received this communication in error, please immediately notify the sender =
and destroy this communication.
----------------------------------------------------------------
Please see the official ORACLE-L FAQ: http://www.orafaq.com
----------------------------------------------------------------
To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx
put 'unsubscribe' in the subject line.
--
Archives are at //www.freelists.org/archives/oracle-l/
FAQ is at //www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------
----------------------------------------------------------------
Please see the official ORACLE-L FAQ: http://www.orafaq.com
----------------------------------------------------------------
To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx
put 'unsubscribe' in the subject line.
--
Archives are at //www.freelists.org/archives/oracle-l/
FAQ is at //www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------
Other related posts:
