RE: Slow running Query.
- From: "Thomas Biju" <BThomas@xxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 22 Jun 2004 12:41:16 -0500
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
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