On Fri, Sep 14, 2007 at 01:33:51AM -0700, Jeremy Cole wrote:
Hi Shawn, Lucio,
SELECT STRAIGHT_JOIN
FROM ...
LEFT JOIN ...
WHERE ...
...
Just to correct a point here... if a query uses only LEFT JOIN or RIGHT
JOIN, the join order is fixed by the query's order itself, so using
He's saying that instead of this:
fprintf (fp1, r[content]);
You at least want something like this:
fprintf (fp1, %s, r[content]);
if you're going to use fprintf, or, if you want something more
c++-like, you'd use a function besides fprintf altogether.
On Tue, Jul 24, 2007 at 02:18:21AM +0200, Mogens Melander wrote:
On Mon, July 23, 2007 10:19, Carlo Sogono wrote:
Is there a way for mysql to login as an administrator and su to a
normal user?
What I'd like to achieve is a way to log in to our clients' accounts (we
are a web-hosting
Perhaps the expire_logs_days variable does what you're looking for.
--Pete
On Thu, Apr 26, 2007 at 09:01:58PM -0400, Tim Lucia wrote:
# cat /etc/cron.mysql/20-purgemasterlogs
#!/bin/sh
/usr/bin/mysql --defaults-file=/root/.my.cnf -e 'show master logs; purge
master logs before date_sub(now(),
to a date in the where clause, the row is
returned in both versions.
--Pete
--
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ArtSelect, Inc.
[EMAIL PROTECTED]
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ArtSelect is a subsidiary of a21, Inc.
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On Wed, Aug 02, 2006 at 12:35:30AM +0200, Martin Jespersen wrote:
I just ran the following sql (on mysql 4.1.20):
update tbl set col1=col2, col2=col1
I went through this recently with the MySQL folks and the long and
short of it is that the above statement is undefined in MySQL. It may
On Tue, Mar 28, 2006 at 10:12:58AM +0200, Sander Smeenk wrote:
Hello!
I have a dual Opteron 250 system with 4GB memory running Debian with
MySQL version 5.0.18 and unfortunately it keeps crashing at (somewhat)
random intervals with messages like:
| Mar 14 00:32:59 zwart mysqld[29820]: ***
On Wed, Mar 15, 2006 at 05:42:40PM +0100, Mechain Marc wrote:
I have a Mysql Server (4.1.8) where some sessions stay connected for a
value greater than Interactive timeout value.
Here is an abstract of the show processlist command:
| 129996 | fret | mtt04.back:33598 | fret | Sleep
On Mon, Jan 30, 2006 at 03:04:20PM +0200, Gleb Paharenko wrote:
Hello.
This is not an exact answer on your question, however it could be
interesting for you:
http://dev.mysql.com/tech-resources/articles/hierarchical-data.html
This is a good article. One thing it leaves out of the
Agreed. OTOH, I would recommend 4.1.15 until they solve the problem
with updates in 4.1.16 apparently not using index prefixes.
--Pete
On Sun, Jan 15, 2006 at 05:07:08PM +, Jocelyn Fournier wrote:
Hi,
Excepted if he found a bug in an older version of MySQL, it's of course
false ! (it
FYI,
4.1.16 appears not to be using prefixes of compound indexes when doing
updates. Reverting to 4.1.15, or adding an index consisting of only
the desired field, restores reasonable behavior.
I have added feedback to a possibly-related bug,
http://bugs.mysql.com/bug.php?id=15935, but wanted to
select ( select max(c.idrow)+1 from provasql c ) , 'This is only a test';
Does changing max(c.idrow)+1 to coalesce(max(c.idrow),0)+1 solve
your problem?
--Pete
On Fri, Nov 04, 2005 at 04:56:26PM +0100, AESYS S.p.A. [Enzo Arlati] wrote:
For a while my application should support both
as they're done with it or hold onto it for (probable) future
use. If I had to guess from reading that page, I'd say they probably
free it, but if I had to guess from the memory use of our db server,
I'd say they don't.
--Pete
Pete Harlan [EMAIL PROTECTED] wrote:
Hi,
This formula shows up
, is finished, then I only have to figure out how many threads are
likely to need a sort_buffer at any given time.
I looked through the manual, various online documentation, and the
source, but haven't been able to determine an answer.
Thanks,
--
Pete Harlan
[EMAIL PROTECTED]
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On Mon, May 23, 2005 at 11:52:50PM -0700, Kevin Burton wrote:
Pete Harlan wrote:
In addition to failing the tests, I deployed the server on Machine 1
for a while and it failed quickly, with a simple insert hanging up and
kill threadID being unable to kill it. (The thread's state was
Killed
it. (The thread's state was
Killed, but it didn't go away and continued to block other threads
from accessing the (MyISAM) table.)
Any help would be appreciated, and please let me know if I can provide
further information.
Thanks,
--
Pete Harlan
[EMAIL PROTECTED]
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On Thu, Oct 28, 2004 at 11:50:12AM +0200, Jigal van Hemert wrote:
...
Fortunately there is function COALESCE() that will return the first argument
that is not NULL. In case of NULL values you can use a default value for an
expression: COALESCE( `col`*2, 14) will produce 14 if `col` is NULL.
/mysql \
--with-mysqld-ldflags=-all-static \
--disable-shared --enable-thread-safe-client \
--with-extra-charsets=all
===
Any advice appreciated. Thanks,
--
Pete Harlan
[EMAIL PROTECTED
On Wed, Aug 18, 2004 at 08:03:36AM +0400, Mike Blazer wrote:
Mike Blazer wrote:
In addition to my previous posting - on this machine I have glibc.2.3.2
which was installed using the Gentoo emerge native installer. Dunno, the
mysql manual says a lot about various bugs and patches for glibc
On Thu, Jul 29, 2004 at 06:26:23PM +0300, Egor Egorov wrote:
...
No. I've forgot to tell that the -Max binary is linked dynamically
because it uses SSL.
Is there a reason the SSL libraries can't also be linked statically?
Do you recommend against running the -Max binary, because it doesn't
use
It might help if you say what version of MySQL you're using, give the
table schema, etc. I couldn't reproduce the behavior you describe
here.
--Pete
On Mon, Jul 19, 2004 at 12:13:47PM -0500, Deepak Vishwanathan wrote:
Hi,
I have a table with a column that has the Unique key constraint
On Fri, Jul 09, 2004 at 09:39:02AM -0500, Craig Hoffman wrote:
Style: Traditional
Area: Yosemite
Rating: From: 5.5 To: 5.10c
...
SELECT * FROM routes, users WHERE area='$area' AND style='$style'
BETWEEN rating='[$rating1]' AND rating='[$rating2]' GROUP BY route
ORDER BY rating ASC ;
On Fri, Jun 11, 2004 at 03:34:14PM +0300, Egor Egorov wrote:
Andrea Gangini [EMAIL PROTECTED] wrote:
Well yes, it's an option. I really need this functionality. But
on mysql site, under source downloads, there's this warning: For
maximum stability and performance, we recommend that
On Mon, Apr 05, 2004 at 08:03:33PM -0500, Paul DuBois wrote:
At 17:29 -0700 4/5/04, Daevid Vincent wrote:
I'm curious when will I be able to do something like this:
SELECT *, IF(( (unix_timestamp()-unix_timestamp(last_seen)) 600),1,0) as
active FROM wifi_table WHERE active = 1;
I think
The 2GB (not 2 Mb) file size limitation on Linux went away years ago.
Unless your distribution is very old you won't have a problem.
--Pete
On Tue, Apr 06, 2004 at 05:05:59PM -0300, Ronan Lucio wrote:
Hi All,
I always worked with MySQL on FreeBSD systems.
Now I need to install am MySQL
My two cents: Just upgrade. We hammer on it pretty hard and the
transition has not only been smooth, it's been a delight. The query
cache, on our load, handles 60% of the queries, which I never imagined
would happen.
4.0.18 feels as boringly stable as most released MySQLs :)
--Pete
On Thu,
Do a mysqldump -d on both machines to make sure the schema, and the
indexes in particular, are exactly the same. Run analyze table on
all tables. Make sure the MySQL conf files (e.g., /etc/my.cnf) are
the same. Do an 'explain query' on both machines; the output should
be the same.
4.0.1 isn't
In this case it might be easier for you to just modify the MySQL
source to disable looking for the socket, and treat localhost as
127.0.0.1.
--Pete
On Fri, Jan 30, 2004 at 06:33:22AM -0800, [EMAIL PROTECTED] wrote:
--- [EMAIL PROTECTED] wrote ---
i've never set up tunnels and such, but are
What does show processlist say when the connections are maxed out?
(You may have to leave a client logged in to reserve a slot so you can
submit this query.)
If it shows only a few connections, then there's something seriously
wrong. If it shows a ton of idle connections, it should tell you
On Mon, Nov 10, 2003 at 05:03:35PM +0100, Harald Fuchs wrote:
In article [EMAIL PROTECTED],
gerald_clark [EMAIL PROTECTED] writes:
Matt W wrote:
Hi Jeremy,
Sorry, it seems like I'm saying this a lot lately. Is it not true that
if the whole table will fit in [free] RAM, that the OS
On Wed, Nov 05, 2003 at 12:08:29PM +1100, Chris Nolan wrote:
To my knowledge, ext2 does have the [2GB filesize] limitation but
ext3 does not.
ext2 does not have this limitation. It was never a limitation of the
filesystem, only kernel/glibc. On 64bit architectures ext2 has been
handling large
On Fri, Oct 31, 2003 at 05:44:02AM -0500, David T-G wrote:
%
% Does the 2 Gig file size limit on Linux get broken when I have a hardware
% raid controller?
The limit applies only to ext2 filesystems, and not all of them at that;
ext3 and reiserfs (and others) can happily write much larger
You have to initialize @var to something first, or it's just null. So
try set @var := 0; before your query.
Also, you don't say which version of MySQL you're using, but I'm using
4.0.14 and I can't say ... as number, * from ..., but have to say
... as number, tableName.* from
HTH,
--Pete
On Wed, Jul 02, 2003 at 12:55:38AM +0300, Heikki Tuuri wrote:
...
4.0.13 has better diagnostics. Please upgrade to it if you are not using
MySQL replication.
Is there something wrong with 4.0.13's replication, or does it not
replicate properly with 4.0.12?
--Pete
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MySQL General Mailing
packaged version, but
clearly the problems aren't at the database end of things. Good work.
Thanks again,
--
Pete Harlan
harlan @artselect.com
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On Fri, Jun 06, 2003 at 05:19:20PM -0500, Paul DuBois wrote:
At 15:11 -0700 6/6/03, Jeremy Zawodny wrote:
On Fri, Jun 06, 2003 at 04:15:29PM -0500, Mark Rages wrote:
I need a placeholder statement that does nothing.
Is there something more elegant than
SELECT FROM ... WHERE 0=1; ?
I
Following up to my own question. Some more information.
SLOW: Create unique compound index on a table, do a query.
FAST: Create same index, only non-unique, do a query.
FAST: Do slow method, but ANALYZE TABLE before doing query.
It looks like the key-distribution information that's stored by
Hi,
When querying a largish (370,000 rows) table, a unique compound index
on its three int columns performs slower (as slow as no index at all)
than when I use the same index created without the unique keyword.
I've repeated it dozens of times: Create the index unique, and it's
slow, create it
On Fri, Mar 07, 2003 at 05:43:29PM -0800, Jeremy Zawodny wrote:
On Fri, Mar 07, 2003 at 05:37:38PM -0800, LZ Orders wrote:
Hi. I wanted to connect from a client machine to a MySQL server using
ssh. I execute the following on the local machine (the server is
foo.bar.com):
% ssh -n -N
On Mon, Mar 10, 2003 at 11:32:06AM -0600, Paul DuBois wrote:
Whether it's a feature or not, it's not always so easy to figure out
what to do. If you specify -h localhost, it can be argued that you
really want the socket even if you specify the port. It can be
argued conversely that if you
If you have that many files in a directory, I would try a filesystem
that indexes directories. Reiserfs does, and there's a patch
somewhere for ext2 (and probably for ext3). I don't know about the
other filesystems.
Otherwise the application has to do a linear search through the
directory every
, but that doesn't mean they want
to add anything whatsoever and then maintain it forever.)
4. Those numbers probably already exist, how else does it ORDER BY,
it has to put the results in an array of some kind
I believe those numbers are unknown when generating the row values.
--
Pete Harlan, who
On Tue, Jan 14, 2003 at 12:42:18AM +0200, Jani Tolonen wrote:
...
* Added join operator `FORCE INDEX (key_list)'. This acts likes `USE
INDEX (key_list)' but with the addition that a table scan is
assumed to be VERY expensive. One bad thing with this is that it
makes `FORCE'
stored? Why isn't this done automatically as it is for [ISAM] tables?
As for the why, I'm not a MySQL developer, but I believe the reason
goes something like this: When ISAM tables were implemented, they did
it the wrong way. When other table types came along, they fixed
this bug and do it the
Or you could just reverse the arguments to LIKE, so your field is on
the right and your string is on the left. You may have to surround
your field with concat('%', field_name, '%') (or just use regexp), but
LIKE is a binary string comparison operator and doesn't care which, if
either, arguments
On Wed, Sep 25, 2002 at 08:49:43PM +0300, Iikka Meril?inen wrote:
Hello,
If the number of files is your concern, have you considered using InnoDB? It
spans tables across any number of data files you want. The performance is
great, too.
The .frm files are still there, though, one per file.
Some people have had problems with the binary of 3.23.5x. We had that
problem, and when we went back to a self-compiled 3.23.46 things
worked normally again.
The bad behavior looked like normal operation for anywhere from two
hours to five days, followed by a CPU meltdown with loads over 200,
If not, i know that ext3 can have ten of thousands files in a directory.
But commande like 'ls' will become slower and slower ...
Is this also slowing mysql ?
I believe it would have to. There is a patch somewhere (I don't know
if it's maintained) for adding indexed directories to ext2/ext3
If you're using InnoDB tables, replication stops the slaves from
running. Heikki said he'd try to get this fixed for 3.23.52.
--Pete
On Mon, Aug 12, 2002 at 04:05:11PM +0200, Lutz Maibach wrote:
Hi,
today I noticed a strange behaviour in MySQL 3.23.49a-Replication I can't explain.
A
Hi Heikki,
Thank you for responding.
(http://www.innodb.com/ibman.html#InnoDB_tuning), but am getting bit
when the log files are full and the buffer pool is checkpointed.
InnoDB does 'fuzzy checkpoints'. That means modified database pages in the
buffer pool are flushed to disk in
?
Alternately, is there a way to trigger this action at night, so we can
avoid it happening during the day? It shut us down for about five
minutes today.
Details follow. Many thanks,
--Pete Harlan
[EMAIL PROTECTED]
Possibly relevant details:
1. Binary mysql-max-3.23.51-pc-linux-gnu-i686.tar.gz.
2
Thanks for your feedback (and your general untiring devotion to the
cause...)
On Thu, Aug 01, 2002 at 04:30:10PM -0700, Jeremy Zawodny wrote:
about what we can do to alleviate this? Instead of having three 150mb
log files, would we be better off with 30 15mb log files?
It shouldn't
I just switched to using InnoDB tables (Linux, using binary mysql
mysql-max-3.23.51, autocommit on), and now my replication dies when I
rename a table, with:
ERROR: 1192 Can't execute the given command because
you have active locked
On Tue, Sep 18, 2001 at 01:45:30PM -0700, Dana Powers wrote:
And my question is, if you've defined your column to have (10,2) precision,
why would you try to insert a higher precision number?
Perhaps he's writing a report, and the application needs to know the
size of the data to expect. It's
Doesn't doing it that way preclude using $dbh-quote? That could mess up
if the name had a single quote in it.
Placeholders remove the need for manual quoting. One of their
benefits.
--Pete
On 16 Aug 2001, Harald Fuchs wrote:
I'd do it like that:
my $sql = q{
REPLACE INTO
TIMESTAMP is not the solution to his problem; he wants the date to
default to now() when the record is created, not updated.
There's currently no way to do this in MySQL; default values must be
constants.
--Pete
hi.
check out the TIMESTAMP column type...maybe TIMESTAMP(14) as the column
It would seem that there is a bug, and it's that create table
accepts an 'illegal' definition. It should either convert the integer
to a literal (making the definition legal and dumpable), or it should
barf on it.
IMO, of course.
--Pete
[Charset iso-8859-1 unsupported, filtering to ASCII...]
it on the grounds that it isn't
confusing to a native English speaker is silly: It isn't English, and
it's slightly ambiguous.
I thought Yusuf's explanation of why it was confusing was clear, if
not the King's English.
--
Pete Harlan
[EMAIL PROTECTED
Probably because you need to redirect your output into the file AFTER all
the options. Rewrite your command like this:
In which shell? In SunOS /bin/sh, or in bash, the shell strips out
the redirection, and the program sees what's left. It doesn't matter
where the redirection is; it can even
use precompiled binaries ;)
Obviously one person's good experience doesn't mean there's not a
problem somewhere, but we sure haven't had any trouble, and it's not
for lack of hammering on it.
--
Pete Harlan
[EMAIL PROTECTED
at as bugs the cases where it turns out to.
--
Pete Harlan
[EMAIL PROTECTED] (Is "Antwort" Swedish?)
Tis true Rolf but you can bet your bottom dollar that at somepoint
a confusion will arise when it is most inconvenient. There is
always a conversion somewhere in the co
I think you'll get better results if you don't quote your numbers. Quotes
should be used for text and dates (depending) but not numbers.
Out of curiosity, why?
We use quotes for numbers all the time here, for consistency's sake;
the programmer doesn't have to worry about the representation
can I force the mysql clients to use a tcp/ip connect if connecting to
'localhost'?
Normally connecting to the true DNS hostname or the ip address of
the machine will do the trick. Connecting to localhost will connect
via the loopback address of 127.0.0.1.
If you connect to the true DNS
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