Hi list,
I have run into problems on a master table for our helpdesk. We have the
following table:
ticket_id (int) - autoincrement (indexed)
master_id (int) (indexed)
Master ID is used to distinguish multiple helpdesks. In this table there
are 100k records, but only 10 distinct master_id's.
On Fri, May 27, 2005 at 08:48:38PM +0200, Rob Cochrane wrote:
> Works
>
> Rob
>
>
> Tucker, Gabriel wrote:
>
> >Hi
> >
> >I have not received anything from this list for a couple of days. I just
> >tried to "re-register", and that did not help.
> >
> >If anyone reads this, please reply to ME
-- How is 'xFxIxExLxDx1x' easier to search than 'FIELD1'?
It's not easier. It is; however, accurate for the purpose at hand.
FIELD1 isn't completely inclusive...it would miss FIELD-1...
-- However, It seems to me that this kind of data manipulation
(cleanup) needs to happen BEFORE the data ente
select greatest(max(col1), max(col2), max(col3), max(col4)) from table
works the best, as Keith pointed toward initially. Remember, I forgot
to mention that I wanted the greatest for the whole table, not just
for each rowso, 10, 12, 8 is not what I wanted...out of
10 2 3
5 4 8
1 12 7
i
I forgot :
10, 12, 8 is not a row !!!
Mathias
Selon [EMAIL PROTECTED]:
> Hi Keith,
> yes concat makes an associative lost for max.
> But if we split the desc on all the columns, it works :
>
> mysql> select * from numbers
> -> order by a desc,b desc,c desc
> -> limit 1;
> +--+--
Hi Keith,
yes concat makes an associative lost for max.
But if we split the desc on all the columns, it works :
mysql> select * from numbers
-> order by a desc,b desc,c desc
-> limit 1;
+--+--+--+
| a| b| c|
+--+--+--+
| 10 |2 |3 |
+--+
Hi,
On May 26, 2005, at 5:03 PM, David Griffiths wrote:
This isn't exactly the right spot, but I can't find any info on the
MySQL web site.
Anyone know who maintains the MySQL Migration Tool (or who is
developing it, as it is currently Apha)?
MySQL AB is actively developing it (hence why i
[EMAIL PROTECTED] wrote:
Hi all,
what is max ? it's the first row when we sort data in descending order.
so
select col1,col2,col3,col4 ... from table
order by concat(col1,col2,col3,col4 ... ) desc
LIMIt 1;
should be silar to what is needed. I say should :o)
That would only work if the greate
Hi all,
what is max ? it's the first row when we sort data in descending order.
so
select col1,col2,col3,col4 ... from table
order by concat(col1,col2,col3,col4 ... ) desc
LIMIt 1;
should be silar to what is needed. I say should :o)
Mathias
Selon Scott Klarenbach <[EMAIL PROTECTED]>:
> Thanks
James Tu wrote:
What does MySQL do internally when you perform a LEFT JOIN?
You can read about it here:
http://dev.mysql.com/doc/mysql/en/left-join-optimization.html >
If you need more details, you could read the source...
Let's say you have two tables:
Table A has 1,000,000 rows
Table B ha
James Tu wrote:
Hi:
Let's say I want to store the following information.
Unique ID - INT(10) autoincrement
First Name - VARCHAR (25)
Last Name - VARCHAR (25)
Age - INT(3)
In general 'age' is a bad column, because you need to know what year the
data was entered to calculate the current age. I
I can't seem to get ahold of the 6 warnings being
generated when I import a csv file.
My ~/.my.cnf file says this:
[client]
fields-terminated-by=,
fields-enclosed-by=\"
#debug=log.txt
#debug=d,info,error,query,general,where:1,load.trace
debug=warning,load.trace
Nothing I do in the 'debug' para
Scott Klarenbach <[EMAIL PROTECTED]> wrote on 05/27/2005 04:38:40
PM:
> Ya, it is a little too specific...here's why I need it.
>
> I have a client that wants to search for part numbers in his DB. The
> problem is, they come into his DB from external sources, with all
> sorts of special charact
Thanks Keith. It didn't quite work as expected, but it helps me a lot
none the less.
The Documentation says it returns the max value, so
select greatest(1, 2, 3, 4) will return 4.
But, across multiple column names, it returns all the values in one
column, not just the greatest one...so
select g
Ya, it is a little too specific...here's why I need it.
I have a client that wants to search for part numbers in his DB. The
problem is, they come into his DB from external sources, with all
sorts of special characters in them...
So, he has fields like
field_one!,
fi--eld 2,
@fi#eld__3xxx
e
At http://dev.mysql.com/doc/mysql/en/explain.html the paragraph
starting with "EXPLAIN returns a row of information for each table
used in the SELECT statement" explains the process briefly. In
general MySQL reads/finds rows while also satisfying other conditions.
In your example below, if there's
[snip]
Can I select the maximum value across multiple columns?
ie, I'd like to select the highest value of buyCost AND sellCost in a
table...where buy and sell are two different columns in the same
table.
i actually have 4 comparisons to run, and don't want to have to
execute 4 queries.
[/snip]
But while I copied all the table files from A (testing machine) to machine
B (real server), no data was writing into A's tables.Are you saying
that I have to shut down the mysqld on machine A or activate WRITE lock to
A before copying over to machine B?
Qunfeng
At 02:52 PM 5/27/2005, Eri
lists.mysql.com was down temporarily due to a faulty disk.
Mails to and from the lists should be working now.
When you notice a disruption like this, it is best if you simply check
http://lists.mysql.com/ to verify if there are mails in the archive that
you have not yet received, and just be pati
I stopped receiving email most of yesterday as well - it's still
catching up today.
I think there was a hiccup in the list.
David
Cummings, Shawn (GNAPs) wrote:
It's possible that Gabe's mail spool is full, and he is not receiving
mail - including our responses.
Gabriel - if you are rece
At 02:46 PM 5/27/05, zzapper wrote:
Today I designed a fairly cute error404.php page, which I'd like to reuse
in future.
Currently I rely on remembering that I created such a page for say ACME
Carpets.
Now and again my memory fails to remember which site I developed a piece
of HTML,PHP,Perl,J
If you are copying a file that mysql is writing to sections of the file
are going to be from different points in time so when that all gets put
backtogether in one file on the other end it's going to be corrupt.
Qunfeng wrote:
No, I didn't shut down mysqld or read lock. Would you please elabor
I'm working on a set of UDFs for preg functions.
[EMAIL PROTECTED] wrote:
I have a hard time figuring out when you would use such a function. I do
not believe you will be able to duplicate this behavior without
constructing your own UDF or by writing a stored procedure. BTW, why *do*
you wan
It's possible that Gabe's mail spool is full, and he is not receiving
mail - including our responses.
Gabriel - if you are receiving any messages directly sent to you -
please respond to the list to rule that out.
If no responses are made to any of either directly or through the list,
then
news <[EMAIL PROTECTED]> wrote on 05/27/2005 02:46:09 PM:
> Hi,
> Today I designed a fairly cute error404.php page, which I'd like to
> reuse in future.
> Currently I rely on remembering that I created such a page for say
> ACME Carpets.
>
> Now and again my memory fails to remember which site
If you're a newbie to MySQL, you'll certainly benefit from reading the
documentation at http://dev.mysql.com/doc/.
If you're new to database design, there's a pretty good normalization
tutorial at http://www.informit.com/articles/article.asp?p=30885&rl=1
Rhino
- Original Message -
From:
Scott Klarenbach <[EMAIL PROTECTED]> wrote on 05/26/2005 04:25:22
PM:
> Can I select the maximum value across multiple columns?
>
> ie, I'd like to select the highest value of buyCost AND sellCost in a
> table...where buy and sell are two different columns in the same
> table.
>
> i actually ha
Just in case you did not follow this suggestion, if you are using 4.0.x this is
very simple. I was looking for this:
set @total:=0;
select f1,f2,...,@total:[EMAIL PROTECTED] as Total from table where ...;
is pretty simple.
On Wed, 25 May 2005, Dan Bolser wrote:
> On Wed, 25 May 2005, Russel
This isn't exactly the right spot, but I can't find any info on the
MySQL web site.
Anyone know who maintains the MySQL Migration Tool (or who is developing
it, as it is currently Apha)?
It does not support Orace 8i (9i and 10g only), but I've looked through
the source code, and it's not a h
Thanks - now I am getting emails from the list..
Gabe
-Original Message-
From: Cummings, Shawn (GNAPs) [mailto:[EMAIL PROTECTED]
Sent: Friday, May 27, 2005 2:39 PM
To: Tucker, Gabriel
Subject: Re: No Longer Receiving Emails
You are sending messages without error, it would appear.
--
Scott Klarenbach wrote:
Can I select the maximum value across multiple columns?
You want the GREATEST() function:
http://dev.mysql.com/doc/mysql/en/comparison-operators.html
--
Keith Ivey <[EMAIL PROTECTED]>
Smokefree DC
http://www.smokefreedc.org
Washington, DC
--
MySQL General Mailing Lis
I have a hard time figuring out when you would use such a function. I do
not believe you will be able to duplicate this behavior without
constructing your own UDF or by writing a stored procedure. BTW, why *do*
you want this function?
Shawn Green
Database Administrator
Unimin Corporation - Spru
Kevin Weslowski <[EMAIL PROTECTED]> wrote on 05/26/2005 02:20:46 AM:
> Hi,
>
> I've got a query that I believe should be giving me better performance
> than it is, since I've put indexes on all the appropriate columns...I'll
> include as much info as I can for anyone wishing to help me optimiz
Hi,
Today I designed a fairly cute error404.php page, which I'd like to reuse in
future.
Currently I rely on remembering that I created such a page for say ACME Carpets.
Now and again my memory fails to remember which site I developed a piece of
HTML,PHP,Perl,Javascript
for and I spend more time
Works
Rob
Tucker, Gabriel wrote:
Hi
I have not received anything from this list for a couple of days. I just tried to
"re-register", and that did not help.
If anyone reads this, please reply to ME so I can determine if the problem is
with my account or with the list.
Thanks
Gabe
<><><>
Here's what I came up with in case anyone else needs a quick fix. A
regular expression replace would've been nicer, but, you do what you
gotta do...
CREATE PROCEDURE `test`(`par` varchar(60))
BEGIN
DECLARE nChars INT DEFAULT CHAR_LENGTH(par);
DECLARE nCounter INT DEFAULT 1;
I saw this on this list, so it is getting there just fine.
-Original Message-
From: Tucker, Gabriel [mailto:[EMAIL PROTECTED]
Sent: Friday, May 27, 2005 10:03 AM
To: Mysql General (E-mail)
Subject: No Longer Receiving Emails
Hi
I have not received anything from this list for a couple o
No, I didn't shut down mysqld or read lock. Would you please elaborate it a
little more on why? Thanks a lot!
Qunfeng
At 01:05 PM 5/27/2005, Eric Bergen wrote:
Did you shut down mysqld or read lock before copying the table?
Qunfeng wrote:
Hi,
I am running MySQL 4.1.8-Max-log on two Linux m
Hello list,
I've got a query problem with MySQL 4._0_.
A specific SELECT will give me a result set with two columns, an ID and an
information. Now I want to group all results by their ID. Speak: In the
result there should be only one row per ID but the informations from the
different rows shal
Hello.
>--default-file=/home/jesse/mysql/my-large.cnf to run the server but it
^
There's 's' at the end, use --defaults-file.
>I have tried to use ./mysqld_safe
>--default-file=/home/jesse/mysql/my-large.cnf to run the server but it
>doesn't w
Hello.
It looks like the path is wrong. Find out the correct value
from /etc/init.d/mysql file and put it in the configuration file.
>Hi,
>I check my.cnf configure file. I find Pid-file path is
>/var/run/mysqld/mysqld.pid, but I couldn't find mysqld directory in
>/var/run and couldn't
I want it to be on the list for feature requests.
The final solution which helped was adding
mysqld_disable_trans=1
to /etc/selinux/targeted/booleans and reboot.
Gleb Paharenko <[EMAIL PROTECTED]> wrote:
> Hello.
>
> Disable or change policies of SELinux.
>
--
For techni
Can I select the maximum value across multiple columns?
ie, I'd like to select the highest value of buyCost AND sellCost in a
table...where buy and sell are two different columns in the same
table.
i actually have 4 comparisons to run, and don't want to have to
execute 4 queries.
--
MySQL Genera
I've already opened a support ticket with MySQL on this issue, but
thought someone here might know the answer, too:
Hi there,
I'm trying to make sure I'm not doing something stupid. I'm trying to
migrate from 4.0 to 4.1, but I'm hitting a snag. I can't find anything
in the docs to describe
I've already opened a support ticket with MySQL on this issue, but
thought someone here might know the answer, too:
Hi there,
I'm trying to make sure I'm not doing something stupid. I'm trying to
migrate from 4.0 to 4.1, but I'm hitting a snag. I can't find anything
in the docs to describe
On 5/16/05, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
> Hi,
> with a similar structure, you can have :
> mysql> select * from users where uid >=262140;
> ++--+
> | uid| nickname |
> ++--+
> | 262140 | text |
> | 262141 | text |
> | 262142 | text |
Did you shut down mysqld or read lock before copying the table?
Qunfeng wrote:
Hi,
I am running MySQL 4.1.8-Max-log on two Linux machine (machine A and
machine B). In the past, I do a simple scp to transfer all the
database table file from one machine (A) to the other (B). After the
transf
Well, it seems you've helped solve my problem, Shawn...here we go:
first off, sorry about the text wrapping and the sloppy sql...I do get
lazy sometimes...I am a programmer :P
you asked how fast this runs:
SELECT ind_first_name
, ind_last_name
, fam_phone
, max(iat_dat
I'm trying to replicate this PHP behavior in a MySQL stored procedure.
The purpose is to pad every character of the string with a pad
character. For example, if the pad character is 'x' and the string is
'STRING', the result is 'xSxTxRxIxNxGx'.
Here is the PHP code if it helps. I'd like to use
Hi
I have not received anything from this list for a couple of days. I just tried
to "re-register", and that did not help.
If anyone reads this, please reply to ME so I can determine if the problem is
with my account or with the list.
Thanks
Gabe
<><><><><><><><><><><><><><><><><><><><><>
"T
Just a test - thanks
<><><><><><><><><><><><><><><><><><><><><>
"There are no problems, only solutions."
Gabe Tucker
Bloomberg LP
(609) 750 6668 - P
(646) 268 5681 - F
<><><><><><><><><><><><><><><><><><><><><>
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To un
Hello,
The new version of DBACentral for MySQL has been released.
DBACentral v1.6 presents powerful report building functionality,
query-based forms, reports and web pages, lookup fields showing
multiple column values, and other improvements
Download the new version of DBACentral for MySQL righ
qin lei wrote:
> I have instal mysql in /usr/local/mysql. When I run the server. The
> message showed on the screen is as follows:
>
> [EMAIL PROTECTED] bin]# ./safe_mysqld &
> [1] 5122
> [EMAIL PROTECTED] bin]# Starting mysqld daemon with databases from
> /var/lib/mysql
> STOPPING server from pid
Mikhail Berman
Folks, I am EW to the list, and MYsql. I am totally adrift, and
looking for some good reading for a raw beginner. PLEASE post some
linke for my use.
I remain,
Kirk Bailey
think
-
| THE BOX |
-
kniht
Defend fre
Hi,
I am running MySQL 4.1.8-Max-log on two Linux machine (machine A and
machine B). In the past, I do a simple scp to transfer all the database
table file from one machine (A) to the other (B). After the transferring,
the table on B works well.
However, I am encountering a problem with tra
Hi,
Yes the server dies during the queries from JDBC.
Regarding the client parameters, what if the client doesn't have mySQL
installed?
Amir
Hello.
Does SHOW STATUS executed from JDBC client return increased values of
this parameters? Could your server die during queries from JDBC (ch
Nevertheless, foreign key constraints belong in the database, not in your
application... If you have foreign keys (your wording), you need foreign
key constraints. Period. Plain and simple. No discussion :-)
How about a log database? We log every phone call to a calls table which
currently has
It's 32 bit. I'm not sure if it's signed or not but chances are you
don't need more than 2 billion ids :)
Richard Lynch wrote:
On Wed, May 25, 2005 11:59 pm, David said:
Does anyone know what the range for server-id can be?
Is it a 16 bit number? 32 bit?
I can't seem to find it in the do
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