Hi Rafael,
You can try using correlated subquery instead of outer join. This can be slow
with big tables though:
SELECT * FROM users WHERE accept_email = 1 and email not in (SELECT email FROM
sent_emails WHERE sent_emails
.email = users.email AND messageID NOT LIKE = ‘XX’)
OR OUTER JOIN
Hello Roger,
Monday, May 9, 2005, 2:56:18 PM, you wrote:
Heh if i know page i would haven't problem.
but i need to get also correct page with link
doomain.con/items.php?showid=45
it can be anywhere! :)
I making web application with data binding (IE stuff) data is loading
very fast, can be
Hello Vaidas,
Monday, May 9, 2005, 3:08:26 PM, you wrote:
hm founded something intresting :)
set @mynr:=0;
Select @mynr as nr,table.id from table
where @a:=IF((table.id=0),0,(@a+1)) having table.id=518 order by id
strange IF hack :)
main problem what this metod not fast. tested in table with
- Original Message -
From: Kapoor, Nishikant [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Monday, August 30, 2004 2:41 PM
Subject: very simple query but strange results
This little sql has me puzzled. Would appreciate your help.
mysql drop table if exists T;
Query OK, 0 rows affected
Rhino wrote:
- Original Message -
From: Kapoor, Nishikant [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Monday, August 30, 2004 2:41 PM
Subject: very simple query but strange results
This little sql has me puzzled. Would appreciate your help.
mysql drop table if exists T;
Query OK, 0
: Michael Stassen [EMAIL PROTECTED]
To: Rhino [EMAIL PROTECTED]
Cc: Kapoor, Nishikant [EMAIL PROTECTED];
[EMAIL PROTECTED]
Sent: Monday, August 30, 2004 7:12 PM
Subject: Re: very simple query but strange results
Rhino wrote:
- Original Message -
From: Kapoor, Nishikant [EMAIL
i have a simple query
select u.*,p.* from users u, profiles p
where u.uname = p.uname
and u.level != 0
Is there any tricks to make this use an index. If i do level=0 is uses an
index , but != does not.
MySQL only uses an index if it will return less than approx. 30% of the
records. It
Oscar Yen wrote:
create table a (
imgid int not null,
parent int,
imgtype char(3),
img longtext,
primary key (imgid),
key searchkey (parent, imgid)
) type = innodb;
T1) select imgid, parent from a where parent = 10;
returns 3357 rows in 0.08 sec.
T2) select imgid, parent, imgtype
N¬ë,j°jËkj{ zºÞw
«k©oz»¢z
¦ºxj×úèThanks for reply.
- Original Message -
From: Ludwig Pummer [EMAIL PROTECTED]
To: Oscar Yen [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Thursday, February 19, 2004 8:39 AM
Subject: Re: Similar simple query slow down dramatically, by just
El vie, 29-08-2003 a las 22:05, Daniel Clark escribió:
select value from tableName where date in (select max(date) from
tableName where id = 4);
But, it doesn't work with mysql 4.0.
Any ideas? Does anybody had this problem before?
What about:
SELECT value, date
FROM tablename
Hi Bruce,
yep, u r right.
Anyway, MySQL query optimizer will take care of it ;)
regds,
-Original Message-
From: Bruce Feist [mailto:[EMAIL PROTECTED]
Sent: Sunday, March 02, 2003 04:00
To: [EMAIL PROTECTED]
Subject: Re: A Simple Query!
Hello, Uttam;
We can simplify this, actually
Hello, Uttam;
We can simplify this, actually... any time L.idFilm is NULL (i.e., no
row in Loans is found), L.dateReturn will have to be NULL as well. So,
specifying the L.idFilm IS NULL condition is redundant. It's sufficient
to look only at L.dateReturn IS NULL in the WHERE clause.
Yours
, 2003 08:13
To: [EMAIL PROTECTED]
Subject: Re: A Simple Query!
Hello, Remi;
Try this; I *think* it'll work (but I'm also new to MySQL):
select F.idFilm, F.title
from Films F left join Loans L on F.idFilm = L.idFilm and L.dateReturn
IS NULL
where L.idFilm IS NULL;
This provides an interesting
Hello, Remi;
Try this; I *think* it'll work (but I'm also new to MySQL):
select F.idFilm, F.title
from Films F left join Loans L on F.idFilm = L.idFilm and L.dateReturn
IS NULL
where L.idFilm IS NULL;
This provides an interesting example of the difference between on and
where, by the way; it
Hello,
This is the way I normally do queries that would be solved with
sub-selects in other products:
SELECT F.idFilm, F.title
FROM Films F, Loans L
WHERE F.idFilm = L.idFilm
AND L.dateReturn IS NULL;
Sam A. Funk
At 02:27 + 03/01/03, Remi Mikalsen wrote:
Hello,
I believe, and hope, I have a
SELECT a.Name,b.Name,c.Name FROM your_table a LEFT OUTER JOIN your_table
b
ON a.Code=b.ParentFemale LEFT OUTER JOIN your_table c
ON a.Code=c.ParentMale
-Original Message-
From: Fam. Tarniceru [mailto:[EMAIL PROTECTED]]
Sent: Friday, December 13, 2002 3:39 PM
To: MySQL Mailing List
select version();
show create table ...;
- Original Message -
From: Vandana [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, June 14, 2002 7:01 PM
Subject: A simple query, please help
My table is as follows:
Value Distance
(float) (float)
Thanks a lot, it worked with the double datatype!
On Fri, 14 Jun 2002, Michael Ivanyo wrote:
I've had similar problems with this in my career and
have come to the conclusion that one should always use
double floats. The problem is typically due to round
off errors of the float
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