Dear MySQL-ers,
Using MySQL 4.1.20, I'm trying to do a complex query on a subset; well,
complex to me, that is. :)
In Perl, I'm trying to get 4 random entries from a subset WHERE processed
= '1' and columnId is unique. Like so:
$sth = $dbh-prepare (SELECT columnId FROM queue WHERE columnId =
Mark wrote:
Dear MySQL-ers,
Using MySQL 4.1.20, I'm trying to do a complex query on a subset; well,
complex to me, that is. :)
In Perl, I'm trying to get 4 random entries from a subset WHERE processed
= '1' and columnId is unique. Like so:
$sth = $dbh-prepare (SELECT columnId FROM queue WHERE
-Original Message-
From: Chris [mailto:[EMAIL PROTECTED]
Sent: maandag 14 augustus 2006 3:55
To: Mark
Cc: mysql@lists.mysql.com
Subject: Re: Random SELECT on subset
In Perl, I'm trying to get 4 random entries from a subset
WHERE processed
= '1' and columnId is unique
Mark wrote:
-Original Message-
From: Chris [mailto:[EMAIL PROTECTED]
Sent: maandag 14 augustus 2006 3:55
To: Mark
Cc: mysql@lists.mysql.com
Subject: Re: Random SELECT on subset
In Perl, I'm trying to get 4 random entries from a subset
WHERE processed
= '1' and columnId is unique
-Original Message-
From: Chris [mailto:[EMAIL PROTECTED]
Sent: maandag 14 augustus 2006 4:18
To: Mark
Cc: mysql@lists.mysql.com
Subject: Re: Random SELECT on subset
Then I want to select 4 random columnIDs, but only from the
subset WHERE processed = '1' (so, from the group
Mark wrote:
-Original Message-
From: Chris [mailto:[EMAIL PROTECTED]
Sent: maandag 14 augustus 2006 4:18
To: Mark
Cc: mysql@lists.mysql.com
Subject: Re: Random SELECT on subset
Then I want to select 4 random columnIDs, but only from the
subset WHERE processed = '1' (so, from
-Original Message-
From: Chris [mailto:[EMAIL PROTECTED]
Sent: maandag 14 augustus 2006 4:54
To: Mark
Cc: mysql@lists.mysql.com
Subject: Re: Random SELECT on subset
Hmm, this still does not do what I want:
SELECT columnId FROM queue WHERE processed = '1' ORDER BY RAND() LIMIT 4
Mark wrote:
-Original Message-
From: Chris [mailto:[EMAIL PROTECTED]
Sent: maandag 14 augustus 2006 4:54
To: Mark
Cc: mysql@lists.mysql.com
Subject: Re: Random SELECT on subset
Hmm, this still does not do what I want:
SELECT columnId FROM queue WHERE processed = '1' ORDER BY RAND
-Original Message-
From: Chris [mailto:[EMAIL PROTECTED]
Sent: maandag 14 augustus 2006 6:32
To: Mark
Cc: mysql@lists.mysql.com
Subject: Re: Random SELECT on subset
Thanks to you, the query has been greatly simplified, but
the result is still the same: every once in a while
Mark wrote:
-Original Message-
From: Chris [mailto:[EMAIL PROTECTED]
Sent: maandag 14 augustus 2006 6:32
To: Mark
Cc: mysql@lists.mysql.com
Subject: Re: Random SELECT on subset
Thanks to you, the query has been greatly simplified, but
the result is still the same: every once
On 3/29/2006 2:10 PM, Jorrit Kronjee wrote:
It seems you are running in to Bug #7209:
http://bugs.mysql.com/bug.php?id=7209
This is fixed in 5.0.19 now.
Best regards
Mark
Mark,
Apparently so, thanks for the hint! We'll try to upgrade as soon as
possible.
I'll supply the mailing
Jorrit Kronjee wrote:
On 3/29/2006 2:10 PM, Jorrit Kronjee wrote
Mark,
Apparently so, thanks for the hint! We'll try to upgrade as soon as
possible.
I'll supply the mailing list with the results of the upgrade.
Mark,
We've been testing it over the weekend and it seems that the bugs
[EMAIL PROTECTED] wrote:
is this relevant ?
We've been looking at connection graphs, but MySQL doesn't seem to reach
that limit. However, these are timely based measurements, so it could've
peaked in between, although highly unlikely.
I'm not very comfortable tweaking these values in a
Hi Jorrit,
Jorrit Kronjee wrote:
[EMAIL PROTECTED] wrote:
is this relevant ?
We've been looking at connection graphs, but MySQL doesn't seem to
reach that limit. However, these are timely based measurements, so it
could've peaked in between, although highly unlikely.
I'm not very
Mark Leith wrote:
Hi Jorrit,
Jorrit Kronjee wrote:
[EMAIL PROTECTED] wrote:
is this relevant ?
We've been looking at connection graphs, but MySQL doesn't seem to
reach that limit. However, these are timely based measurements, so it
could've peaked in between, although highly unlikely.
Hello list,
Recently we upgraded from 3.23.3 to 5.0.18 and started noticing some
weird behaviour. We have update scripts running on a regular interval
and some of these scripts randomily exited with MySQL error:
SELECT command denied to user 'user'@'host' for table 'example'
However, this error
[EMAIL PROTECTED]
Subject: Random 'select permission denied' since upgrade to 5.0.18
Hello list,
Recently we upgraded from 3.23.3 to 5.0.18 and started noticing some
weird behaviour. We have update scripts running on a regular interval
and some of these scripts randomily exited with MySQL error
On Tue, 28 Mar 2006, Jorrit Kronjee wrote:
To: mysql@lists.mysql.com
From: Jorrit Kronjee [EMAIL PROTECTED]
Subject: Re: Random 'select permission denied' since upgrade to 5.0.18
snip
Could this message appear when, for instance, a maximum amount of threads
has been spawned or MySQL has
[EMAIL PROTECTED] wrote:
On Tue, 28 Mar 2006, Jorrit Kronjee wrote:
To: mysql@lists.mysql.com
From: Jorrit Kronjee [EMAIL PROTECTED]
Subject: Re: Random 'select permission denied' since upgrade to 5.0.18
snip
Could this message appear when, for instance, a maximum amount of threads
has been
is your access control by hostname or IPnumber? if hostname you could
be having transient DNS issues - where the IPnumber on the client
connect can't be resolved into the permitted hostname (fast enough).
try using IPnumber in the access control and see if the problem goes
away - if it does
On Tue, 28 Mar 2006, Jorrit Kronjee wrote:
To: mysql@lists.mysql.com
From: Jorrit Kronjee [EMAIL PROTECTED]
Subject: Re: Random 'select permission denied' since upgrade to 5.0.18
[EMAIL PROTECTED] wrote:
On Tue, 28 Mar 2006, Jorrit Kronjee wrote:
To: mysql@lists.mysql.com
From
At 02:08 AM 9/20/2002, you wrote:
Hi all,
anyone knows a good method to retrieve 1 random selevted record out of
thouseands?
right now I'm using
select ID from table ORDER BY rand() LIMIT 1
however, this seems like a very slow method, like mysql first organizes a
few thousand records in a
Hi all,
anyone knows a good method to retrieve 1 random selevted record out of
thouseands?
right now I'm using
select ID from table ORDER BY rand() LIMIT 1
however, this seems like a very slow method, like mysql first organizes a
few thousand records in a random 1 and only returns 1
Any
Mailing-List: contact [EMAIL PROTECTED]; run by ezmlm
(http://www.ezmlm.org)
From: W. Enserink [EMAIL PROTECTED]
Date: Fri, 20 Sep 2002 09:08:53 +0200
anyone knows a good method to retrieve 1 random selevted record out of
thouseands?
right now I'm using
select ID from
in subsequent queries? If so when does this variable
expire? When you close the connection?
-Original Message-
From: Roger Baklund [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, January 09, 2002 2:40 AM
To: David V. Edelstein
Subject: RE: Random Select Statement??
Sorry Roger,
It's
* David V. Edelstein
I would like to create a mySQL query that will find the max
user_id, use this value to calculate a random value of the
user_id from [1 thru max], then return the entire row for
that person(user_id) filled in with that persons(row) four
entities, which I can use to
Easier method:
SELECT * FROM people ORDER BY RAND() LIMIT 1;
-Original Message-
From: David V. Edelstein [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, January 09, 2002 1:08 PM
To: 'Roger Baklund'
Cc: '[EMAIL PROTECTED]'
Subject: Random Select Statement - help please
Hi Roger,
Thanks
I'm trying to create a select statement that will go into a table find the
number of rows in the table then select a single random row and return it. I
am using Java/mySQL with the mm.mysql JDBC drivers. I've been playing around
with the following statement but it doesn't seem to like the
* David V. Edelstein
I'm trying to create a select statement that will go into a table find the
number of rows in the table then select a single random row and
return it. I
am using Java/mySQL with the mm.mysql JDBC drivers. I've been
playing around
with the following statement but it
hi,
i would like to show 5 random field from a total of 100.
id is my primary key
id name
--
abmarcos
akjohn
how can i show 5 of them randomly?
thanks in advance,
marcos
[EMAIL PROTECTED]
On Tue, 3 Apr 2001, Marcos wrote:
hi,
i would like to show 5 random field from a total of 100.
id is my primary key
id name
--
abmarcos
akjohn
how can i show 5 of them randomly?
thanks in advance,
marcos
When you say "5
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