MYSQL :: Mysql Running All Queries Double ? How To Avoid ?

Mysql Stops Running Queries After Approx 1 Day
I have a PHP script that runs 24x7 and reads then deletes from a table about once every couple of seconds.

However, after about a day, I start getting the error "$result is not a valid mysql resource etc..".

Looking in the query log, mysql has stopped logging the queries - so I presume they are not being run/received by the daemon.

If I restart the script, it will work fine again for around a day.

Does anybody know what would be causing this? Are there any logs than can help?

Having run the script for about 5 minutes, I'm already up to "mysql resource id #180" so I guess by the time the script stops working, we could be up to the tens of thousands.

Could mysql be running out of resource IDs? Once the query has been execute, I don't need to store it any more so can I somehow get it to start re-using some of the old resource IDs?

Running Queries
I am running phpbb forums, and I had run into a problem. They gave me a line of code that Im am supposed to run to fix my problem. Now that creates a problem, because that line of code is wrong sql says??

Heres the code..

ALTER TABLE phpbb2_users ADD COLUMN user_timezone float DEFAULT '0' NOT NULL

I think the problem lies within the user_timezone part. I get an error 1064, and also it says that the database table phpbb2_users is not there, which I am looking at

Running Multiple Queries In Query Browser
What is the magic word to get query browser to execute a string of queries?

How To Avoid NOT EXISTS In MySQL 4.0.26
I tried to use NOT EXISTS but recently found out that it is supported since 4.1. Now I'm trying to avoid it but I can't figure out how to do this. The Problem is that I have a table with (among outhers) a column SessionId and action.

Action may be opened and closed. Now I want to get all those sessions which are in state open, i.e. which have no line with action = closed. My first attempt was:

select sessionId
from audit AS a
where action = 'opened' AND
NOT EXISTS (SELECT * FROM audit AS b WHERE b.sessionId = a.sessionId AND b.action = 'closed')

Could anybody give me a hint how to get an equivalient query without a subquery?

Cleaning Up MySQL Connections To Avoid 1040
Well, I'm trying to run
PHP

$result = mysql_query("SHOW FULL PROCESSLIST");
while ($row=mysql_fetch_array($result)) {
    $process_id=$row["Id"];
    if ($row["Time"] > 200 ) {
        $sql="KILL $process_id";
        mysql_query($sql);
    }
}

To clean up my connections, as I'm getting a 1040 error "too many connections". Of course, I can't run this until I can actually connect, unless there is a way around somehow. I don't have any admin rights, I just have a web-based "php my-admin" module to run the db.

Every page people access opens a mysql connection, and then it is closed with
PHP

mysql_close($connection);

. Would putting in
PHP

<?php mysql_close($connection); $NASI_connection = null;?>

Avoid Adding More Than Once
im trying to do what i think is a fairly easy query but im having some problems.

basically i want to only include a certain row of data in the results if it has previously met a certain criteria. however if it has met the criteria more than once i still only want it to return once.

Avoid Self-joins
I have a table that has values of variables for certain entities. The
columns of interest are targetID, variableID, and valueID. A row (1, 5,
9) means that target number 1 has a value of 9 for variable 5. Being
denormalized, target number one will have many possible rows in this
table, one for each variable for which it has a value.

My problem occurs when I want to find out what targets match a certain
set of variable values. For instance, I want to find out what targets
have a value of 9 for variable 5 and a value of 25 for variable 10. I'm
thinking that this can be a simple self-join:

SELECT mya.targetID from mytable as mya
LEFT JOIN mytable as myb
ON mya.targetID=myb.targetID
WHERE (mya.variableID=5 AND mya.valueID=9)
AND (myb.variableID=10 AND myb.valueID=25)

Does this make sense so far? The problem is that this doesn't scale.
When I have more than 31 variables and I need to evaluate them all,
MySQL breaks: I can't do more than 31 joins.

My design calls for perhaps 80-100 variables, so even 64-bit
architecture with a limit of 64 joins won't get me there. This is NOT
an architecture or platform issue - I need a design and a data
structure that will scale to lots of variables.

I need another data structure that won't get me stuck on too many
joins.

How To Avoid Race Condition?
How do I lock a table for one of my insert (followed by a read) queries on a table such that other simultaneous insert/read queries on that table are put off until the first one is complete? I am trying to avoid a potential race condition.

Count(*) To Avoid Duplicates
This is for (2) seperate sites that share the same login table (same username/passwords will access both sites).

Users may register at either site, if they choose, then they should login at the other site to "complete" the last phase of registration at the other site to insert remaining needed values.

Problem is with duplicates. When some users won't login, as they should, "complete" the process at the other site. They may bypass and register anew like anyone else at the site for the first time. (Even though there is a pre-registration page at both sites -- asking if users have already registered at the other site prior to arriving at the second -- directing a login to complete the process.)

Reason this is a concern is that one site has a (6) page registration process, inserting to (8) tables.

My idea (aside from aleady checking for unique inserts on usernames/passwords/emails) is to check on the complete phone number.
To be used on a conditional show region on the second page of registration -- if the latest registrant entered the same phone number asmay aleady exist in the table, (previously enterered while registering on the other site and forgot about it) -- this 2nd registration page will not show due to the: count(*)

Starting with 'Area' code, is this practical/how to combine all three?
Anyone have better suggestions or experience on handling two site duiplicates?

Would there be any benefit in having ALL USERS (both new and prior from the "other" site) fill out the the 1st registration form (on the (6) page registration site) where they are then directed to login to complete the process?

'AREA' 'PRE' 'PHONE'

SELECT *
FROM `Members`
WHERE `Area`
IN (
SELECT `Area`
FROM 'Members`
GROUP BY `Area`
HAVING count(*)>1
)

note: some registrants have same company names fir satellite/regional offices

Avoid Zero In Interger Datatype
Is there any way to avoid zeros which automatically entered in database in those column those have integer data type.

or i want to enter - instead of those zero

How To Avoid Previous Results
I want to omit all results(id) from the first query in 2nd query , without using sub query...

How To Avoid Duplicate Records
I need to filter out duplicates for every 30 seconds. say i have two duplicate records within the 30 seconds limit. I need to show up only one. If there are identical records but with a different time settings(say above 30 seconds) then i need to display it. I need to restrict duplicate records within 30 seconds.

How To Avoid Repeat Typing
I would like to know how to avoid repeating
typing an SQL statement when an error occurs after execution. That is,
if an error occurs I should be able to retrieve the statement that I
had written and correct the mistake. It is agonizing to keep on
repeating a statement that can take five minutes to write just because
one mispelled a word or missed a comma. I use windows 98.

Avoid Repeat Typing
I am a newbie in MySQL. I would like to know how to avoid repeating
typing an SQL statement when an error occurs after execution. That is,
if an error occurs I should be able to retrieve the statement that I
had written and correct the mistake. It is agonizing to keep on
repeating a statement that can take five minutes to write just because
one mispelled a word or missed a comma.

Command Used In Avoid Retyping
I don't want to retype a command once I wrote it. Does anyone knowa about an option that would just that like in a dos shell where you can use arrows to get back any command you have entered.

Avoid Couples In The Resultset
I use a query like this:
select t1.id_topics, i1.id_indices , t2.id_topics from indices i1, indices i2, topics t1, topics t2
where (i1.ind ='test' and i1.id_urls=t1.id_urls and i2.id_urls=t2.id_urls and i1.ind=i2.ind and t1.id_topics<>t2.id_topics)

it gives results like those:
"id_topic1","id_indices","id_topic2"
36,682,34
37,682,36
36,682,37
37,682,34

I would like to eliminate the "inverted" mates of couples in the resultset. That means in the example
"36,682,37" should be eliminated since "37,682,36" is already part of the resultset. Is it possoble to express this request in the query?

Avoid Duplicate Records In Within 30 Seconds
I'm working with php. I have a auction site, more or less. I want to create all-time rankings. The idea is to display where a seller ranks (all time) in the number of sales.

So for example, I'd display
John Doe All Time Sales Ranking: #138

I'm not exactly sure how to go about this.

$query = "SELECT count(*) as counter, SellerName FROM sales GROUP BY Sellername ORDER BY counter DESC";

This query would give me the data to list all of the Sellers in desc order by the number of sales.

In php, I could probably count until the Sellername was equal to $Sellername (already defined in their profile page), but I was hoping there would be a way to do this entirely in MySQL.

Trying To Avoid Using Query Inside While Loop
I've done a lot of reading on here and I learned from some of Rudy's posts that it's a bad idea to do a query inside a while loop. I don't know why this is but he seems like an expert so I'll listen

What I am trying to do is take the top ten points from a player and display them. First I will post the tables then the code.

CREATE TABLE `tournament` (
`gameid` int(11) unsigned NOT NULL auto_increment,
`gametype` tinyint(2) unsigned NOT NULL default Ɔ',
`gamedate` datetime NOT NULL default &#55612;&#57200;-00-00 00:00:00',
`leagueid` int(11) unsigned NOT NULL default Ɔ',
`seasonid` int(11) unsigned NOT NULL default Ɔ',
`roomid` int(11) NOT NULL default Ɔ',
`gamename` varchar(50) NOT NULL default '',
`cost` mediumint(4) NOT NULL default Ɔ',
`seats` mediumint(4) NOT NULL default Ɔ',
`notes` tinytext NOT NULL,
PRIMARY KEY (`gameid`)
) ;

CREATE TABLE `tournament_results` (
`id` bigint(20) unsigned NOT NULL auto_increment,
`gameid` int(11) unsigned NOT NULL default Ɔ',
`memberid` int(11) NOT NULL default Ɔ',
`place` smallint(4) NOT NULL default Ɔ',
`earnings` smallint(5) default Ɔ',
`bounties` float unsigned default Ɔ',
`points` float NOT NULL,
PRIMARY KEY (`id`)
);
Now the follow code would be what I would use if I just wanted to add all the points and not limit it

PHP

mysql_query("SELECT
members.firstname,
members.lastname,
SUM(tournament_results.points) AS tpoints,
COUNT(*)as numgames,
AVG(tournament_results.points) AS apoints,
members.memberid AS membersid
FROM
members,
tournament_results,
leaguemembers, tournament
WHERE members.memberid = tournament_results.memberid
AND leaguemembers.memberid = members.memberid
AND leaguemembers.leagueid = '$lid'
AND tournament_results.gameid = tournament.gameid
AND tournament.seasonid = '$sid'
GROUP BY members.memberid
ORDER BY tpoints DESC");

That will total all of their games but I want to limit it their top 10 scores how can I do this without introducing a query inside of the while loop?

How To Avoid Having Thousands Of Records In A Many-to-many Relation
I'm building a web administration system for my company. We keep all our contacts from other organizations in this system (stored in a MySQL database): name, addres, telephone etc.

One feature of the system is that you can select a number of contacts and collectively send them an email. This works fine.

But: some of my co-workers need to know which of the contacts has received a specific email from the system.
So I was considering a setup like the following:

Table one: contacts (name, addres etc.)
Tabel two: emails (subject, text, creation day, day of delivery etc.)
Table three: many-to-many table holding one row for each email that has been send to a specific contact (autonum ID, ID of email and ID of contact).

My problem is that I can predict that this table will have LOTS of records in no time, as my co-workers are sending out many emails to a lot of contacts.

So: are there any better ways?
I thought about storing all contact IDs that has received a specific email in a text field in that email's record in the database - but then I'm not sure of the performance when I have to find out if someone specific has gotten a specific email etc.

What Field Type To Use To Avoid Blank Spaces In Fields
Can you tell me the best field type to use here?

I've got a table in mysql with all 5 fields defined
as tinytext

Problem is when I export this to to a text file for notepad
each field is padded out by several blank spaces,
and i think my eamil program doesnt like this type of structue :
field1 , field2 , field3 , field4

Scheduling Replication To Avoid Bottle-neck Updates
We have a circular master-slave setup where any one of the 2 servers
can become master at any time (by human decision). The two servers are
placed at geographically different sites. The servers contain à number

of databases which are all replicated both ways.

When we have full usage of one master ~500 inserts/updates per second,
the bandwidth between our sites becomes a significant bottle-neck. This

we can accept at database level not on server level, ie
- if database A on site B has a lag of 30min because of important
activity on database A on site A, it is acceptable.
- if database B on site B has a lag of 30min because of important
activity on database A on site A, it is not acceptable.

Is there a work-around? We never have updates concerning 2 databases in
the same query.

Creating multiple mysql servers at each site could be one, but that
means some 10-50 servers on every physical computer. What side-effects
does that create?

Help Please Running Mysql On Os X
I am very new to mysql. I am using the sitepoint book 'Build your own Database Driven Website using PHP and MYSQL. I have installed mysql mysql-5.0.41-osx10.3-powerpc. Under preferences/mysql it indicates that the mysql server is running. When I try to access mysql through the terminal window I get a message - command not found. Or no permissions. I can go to the bin directory and list the contents - they seem to be there. I can't get past page 21/22 Post-installation setup tasks. I am also new to using the terminal window. I suspect I have missed something really basic - any suggestions on how I can get up and running would be much appreciated!

Need Some Help In Getting MySQL Set Up And Running.
I wasn't sure if someone would be able and willing to help me, but I am new to installing MySQL on a Windows 2003 server (actually .. any server), but I am installing it on a Windows 2003 server right now. I also installed a new version of PHP on the same server. Everything looks fine, but when I go to phpinfo.php I don't see anything saying MySQL. (I saw somewhere that if MySQL is installed properly, it should be displayed on the phpinfo.php page.)

I am currently trying to set up and run Cerberus Help Desk, but it isn't finding the MySQL database that I installed.

So, I would really appreciate it if someone could not just help me via email or postings in here, but actually by using Instant Messenger (AOL, Yahoo! or MSN) to walk me through the set up, testing, etc. so I can get things up and running properly.

I was hoping that someone with more experience than I might be willing to help me in this manner.

Could Not Get MySQL Running
I went to MS-DOS to start the MySQL application by typing mysqld into the bin directory of where I installed MySQL but once I did typed the command and pressed enter this is all I got :

A moment passed before I am shown the path of bin with no indication of MySQL server started. And also I have installed this as a window service.

Running MySQL 5.0
I've just downloaded and installed 5.0 on my Pc/ win 98se.
When I run the program MySQL Command Line Client, it appears to run for a second then disappears. I see the program flash open for a second and then it is gone.Complete newb needs some help.

MySQL 4.1 Running
I've been running mysql 4.1 for sometime and using phpMyAdmin (v2.6.2) to administer the databases.

Using php scripts I can also update/insert etc the databases (maintained on my laptop Mac OS X Tiger).

Suddenly, I can't get phpMyAdmin to load in the browser. I've also tried other MySQL GUI tools like CocoaMySQL and Navicat....they won't run either. I downloaded and installed phpMyAdmin 2.6.3-pl1 as well but no improvement.

Why would mysql run but the admin apps not work?

Running MySQL From A CD-ROM?
I have used PHP and MySQL for a few years now. Just today I can across an application that had a MySQL database running locally off a CD ROM. I did not know this was posible. When the application runs it starts up the MySQL database without the user even knowing they are running it. It is pretty amazing.

So I want to do the same thing. Is there any documentation on how to run MySQL locally. I would like to know how to build the database and create tables under these curcumstances.

Running MySQL
I have installed mysql-3.23.54-win and it all seems to have gone OK .... now i want to run it and setup a database. I dont have an icon on the desktop and there is nothing in Start - Programs ..... start it from DOS prompt via C:> C:mysqlinmysql.exe and i get error 2003 cant connect to MySQL server on localhost <10061>

MySQL Is Running, But I Can't Connect
I really need some help with this. MySQL will not start on boot despite
everything I've done to make sure that it is set to do so.

When I start it as root from a terminal with "/usr/bin/mysqld_safe
--skip-grant-tables &" I show several mysqld procs. and one mysqld_safe,
but I can't connect:

[root@adamsmdk madams]# ps -aux| grep mysql
Warning: bad syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
root 3650 0.0 0.1 2276 664 ? S 11:09 0:00
/usr/lib/courier/authlib/authdaemond.mysql start
root 3654 0.0 0.1 2316 792 ? S 11:09 0:00
/usr/lib/courier/authlib/authdaemond.mysql start
root 3655 0.0 0.1 2276 664 ? S 11:09 0:00...............

Gdb Bus Error When Running App With Mysql 5.0
When linking with mysql 5.0 library, I can't no longer use gdb to debug
my app anymore. It cores immediately with a bus error. I've also
noticed that the size of the executable is more than doubled compared
with one linked with mysql 4.0

Running MySQL In RAMDisk
Have a very large database and due to performance requirements it seems that running MySQL in RAMDisk might be a good solution. Access to the database is through PHP. Any suggestions or experiences?

Running Two MySQL Versions
Actually what I want to do is remove 4.1 because I downloaded 5.0 and installed w/o removing the previous version. I now have port 3307 for 5.0. Is this a problem and how can I change it back to 3306 so e.g. when I use Apache/PHP evrything works?

MySQL Running Very Slow
I have the following INSERT SQL, which runs very slow (For 2 full days it had not done anything) on a 2 processor Compaq machine running Suse Linux. Code:

On What Port Is MySQL Running?
I'm running MySQL on my Mac, and I'm trying to figure out on what port MySQL is running. What can I type into Unix terminal to figure this out? Or can I find out some other way?

Slow Running MySQL?
I'm hoping someone may have an idea what could be causing the slow loading pages of my web-site. I'm not positive, but I'm relatively sure that it's related to a problem with MySQL database.

I purchased a program called Sam3 for broadcasting our radio signal over the internet. The software requires the use of MySql in order to set up web pages for our web site.

The problem is, that while everything works GREAT (requests can be made from the site, songs can be searched, the history of what we've played shows up) the pages load PAINFULLY slow. Other users of this software have had no such problems so I'm at a loss.

I know from testing that the PHP script for the web pages is fine, I have plenty of bandwith both upload and download available on my DSL line, and while the computer running MySQL is behind a router I have tried plugging the DSL line DIRECTLY into the host computer and it makes no difference.

For all appearances it seems the problem is that it takes MySQL forever to gather and provide the information needed for these pages. Does anyone have any idea what I should be looking at to solve this problem?

I do not know the MySQL program at all, so I get somewhat lost when people start throwing out technical terms, but this has been really frustrating because no one else seems to have the problem and everyone so far has just told me to check the things I've already checked.

MySQL Config Not Running
i'm trying to set up MySQL with IIS 7.0 on Windows Vista Home Premium. After you install MySQL, there's a check box to launch the config app.

if i leave it checked, the app does not load. if i try to run the app by double-clicking its icon it gives me an error saying, "The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log for more detail." I cannot find the application event log, though.

Running Mysql From Shell
I need to run this sort of querys from shell:

delete from 3dinformatica where preco = " " ;

CREATE TABLE tudotest AS SELECT DISTINCT * FROM 3dinformatica;

DELETE FROM 3dinformatica;

INSERT INTO 3dinformatica (cr_datetime,produto,vendedor,preco,link) SELECT DISTINCT cr_datetime,produto,vendedor,preco,link FROM tudotest;

DROP TABLE tudotest;

i wanted to put the mysql cmd in a file like mysql.sh and run it from crontab.
i have about 100 querys like that i need to run at the same time.

Running Mysql On Old Computers
IÂ´m running mysql on a Pentium 166 Mhz with 16 Mb of RAM. Pretty old, right?

I want to know if there is a way to improve performance. I donÂ´t know, something about reducing the number of queries that it will respond or cutting out some features.

Testing If Mysql Is Running
how can i test if mysql is running on my machine?

Running MySQL In RAMDisk
Have a very large database and due to performance requirements it seems
that running MySQL in RAMDisk might be a good solution. Access to the
database is through PHP.

Running Two MySQL Versions
It seems that my computer is running two different mysql versions. When I'm trying to login to the database it refuse my password and giving me access to the test configuration. This is what i get in the event viewer.

Do you already have another mysqld server running on port: 3306 ?
Event id 100.

The problem occur when I changed my password for the database. I have turned off Mysql in local services but i think that that's the original version. When I start the xampp i think it starts the winmysqladmin version (not sure). How do I reconfigure the hole thing and how can I see what's running on my machine.

I actually have another question to. I'm trying to run and open the shell mysqladmin which doesn't work. It's just a flash, which one of them am I supposed to run?? You have several options like mysqladmin, mysql, mysqld, mysqld-nt....etc. I opened the winmyslqadmin which i think wasn't that good.

Running Backup For Mysql
Can anyone suggest a reliable and inexpensive backup service for mysql? I have about 50 tables, of which I've been doing database backups daily on the server, then downloading the backup every couple days or so. The backup files are starting to get relatively large, and I'd like to find a service to backup to off site.

MySQL Database Running
How do i find out if a MySQL database is running or not?

Running MySQL Win32
I'm an absolute beginner and would really like to read something in the manual to solve this problem, but the manual just take care of Unix and Linux users.
Because we develop on NT we wanted to install MySQL with Apache and PHP3 on a NT workstation for faster testing beside our Linux station.
But I have problem to start the program (mysql.exe). It just gives back an error:
Error 2003: can't connect to MySQL server on localhost 10061
Network is running, I can ping localhost. I don't know what to do to get it running.

Complex Queries Versus Multiple Simple Queries
I am constructing a database to contain information about stories posted on my site. Information included will be things like title, author(s), genre(s), story codes, synopsis, etc.

I worked out that storing this information properly, so that it can all be searched on, could take as many as ten tables.

My question is this: Is a single complex query really better (more efficient for the server) than multiple simple queries? In other words, I may need the information for as many as 25 or even 50 stories for a single page.

Is it better to get all of the information out of a single, massive, complex query, or is it acceptable to get the information essentially one story at a time, which could mean 25 or 50 simple queries...?

MYSQL Running Query On Data Through Php...
I am trying to take address info from 5 different fields in mysql, concatenate them into one string of text and have then run through a POST, like you would in a form, and have them spit out on the other end into the database the Lat and Lon of the address... I can do it manually, but I would like to do it automatically...

I would like to know if I am going at this right...

Psuedo

QUERY=SELECT addressNumber, addressStreet, city, state, zip FROM table
$addressStr=addressNumber + " " + addressStreet + ", " + city + ", " + state

RUN IT THROUGH A POST SOMEHOW??? and call GEOCODER from my manual insert script...

$sql=INSERT INTO table SET lat='$lat', lon='$lon'