Re: Writing Arabic Text to a DataBase with Perl

2011-12-12 Thread Jon Forsyth
Hello Michaël, Thank you for the tips. SHOW CREATE TABLE helped me figure out that my table was using Latin1 and I was able to change it to utf-8. However, I did not see any encoding specified on the column with this command. I tried to fix the connection encoding with this line of Perl code:

Writing Arabic Text to a DataBase with Perl

2011-12-10 Thread Jon Forsyth
VALUES ('$engl','$arab');"); --- I also dropped the English string completely, but the Arabic still writes to the wrong field--strange behavior, but I'm sure it's a problem with the Arabic. Thanks, Jon

Null Output Problem

2011-10-11 Thread Jon Forsyth
clause to something like this: WHERE [total_words = correct_words] OR [COUNT(total_words = correct_words) = 0] but this is bad syntax. I put the brackets there for readability. Thanks, Jon

Re: import database

2011-10-10 Thread Jon Siebert
.here is one way http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html On Mon, Oct 10, 2011 at 4:47 PM, Jessica Bela wrote: > Hi all, > how I can import in my PC a database Mysql that has been created in > another PC and with other tools?

Re: Concerned : Developer getting There is no 'root'@'%' registered error message

2011-08-17 Thread Jon Siebert
Perhaps he could make the stored procedure functional by creating a user with the EXECUTE permission (somebody please fell free to correct me if I am mistaken) if it is to be used to execute a stored procedure. You don't want someone to attempt using the 'root' username with a typical 'mysql' passw

Re: does mysql support master to master replication

2011-08-02 Thread Jon Siebert
I had seen a discussion here as well, but honestly did not test it. It may be of help. http://www.linkedin.com/groupItem?view=&srchtype=discussedNews&gid=72881&item=60056153&type=member&trk=eml-anet_dig-b_pd-ttl-cn On Wed, Aug 3, 2011 at 1:10 AM, Angela liu wrote: > Hi, Folks: > > Does mysql su

Re: does mysql support master to master replication

2011-08-02 Thread Jon Siebert
MySQL, to my knowledge, supports only Master to Slave replication- as well as Master-slave-slave replication. http://dev.mysql.com/doc/refman/5.0/en/replication.html On Wed, Aug 3, 2011 at 1:10 AM, Angela liu wrote: > Hi, Folks: > > Does mysql support master to master replication, or master to

Re: How to view Query Execution time

2011-08-01 Thread Jon Siebert
http://dev.mysql.com/doc/refman/5.1/en/query-log.html information on query log may become useful for you in the future. Also, search the slow query log, which also may help you in the future On Mon, Aug 1, 2011 at 11:54 AM, Prabhat Kumar wrote: > you can also use EXPLAIN, which will give you much

Low priority write

2011-07-09 Thread Jon Siebert
Low Priority Lock Hello was wondering if anybody would have some input: This will be on the same table. Client (A) acquires a READ lock; immediately thereafter a large amount of clients wait for a read lock as well, and client(B) requests a LOW PRIORITY insert. Another surge of clients reques

MySQL Cluster/Cluster Carrier Grade Changelogs Have Moved

2008-04-24 Thread Jon Stephens
m/doc/refman/5.1/en/mysql-cluster-news- and tacking on ".html" to the end. This sounds complicated, so here's an example: The changelog for MySQL 5.1.23-ndb-6.2.14 can be found at http://dev.mysql.com/doc/refman/5.1/en/mysql-cluster-news-5-1-23-ndb-6-2-14.html cheers jon. -- Jo

Re: Understanding mysql NULL handling ...

2007-06-13 Thread Jon Ribbens
On Wed, Jun 13, 2007 at 12:50:03PM -0700, Mufaddal Khumri wrote: > mysql> select * from t1 where sid != 2; > > As you can see, the rows that had sid = NULL did not get returned in > the results when i did "... where sid != ; " > > Question: Is this behaviour correct and is in accordance to the

Re: maximum number of records in a table

2007-06-12 Thread Jon Ribbens
On Tue, Jun 12, 2007 at 11:09:41AM -0400, kalin mintchev wrote: > > I guess a lot of that depends what an acceptable query execution time for > > you is. > > well... i don't really know. 30 secs maximum?! i've never worked with > such huge tables. 3 - 5 million records is fine but i've never work

Re: only select privilege

2007-06-08 Thread Jon Ribbens
On Fri, Jun 08, 2007 at 04:25:00PM +0530, Ananda Kumar wrote: >So, what ever i did is right? Yes. User 'ab' can SELECT on all tables in database 'abc'. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]

Re: only select privilege

2007-06-08 Thread Jon Ribbens
On Fri, Jun 08, 2007 at 03:14:18PM +0530, Ananda Kumar wrote: > How do i give only select privilege to a specific database. > > GRANT SELECT ON abc.* to 'ab'@'%' identified by 'ab'; Like that. > mysql> select select_priv from user where user='qa'; > +-+ > | select_priv | > +-

Re: MySQL Magazine - Issue 1 available NOW!!!!

2007-06-07 Thread Jon Ribbens
On Wed, Jun 06, 2007 at 05:56:44PM -0700, Peter Rosenthal wrote: > On 04/06/07, Jon Ribbens <[EMAIL PROTECTED]> wrote: > >Um, what? Both that and the methods described in the magazine are > >completely wrong. You use mysql_real_ecape_string(), that's it. > >

Re: MySQL Magazine - Issue 1 available NOW!!!!

2007-06-04 Thread Jon Ribbens
On Mon, Jun 04, 2007 at 02:44:25PM -0700, Daevid Vincent wrote: > Thanks for the magazine. I already incorporated a little extra SQL > injection checking into my db.inc.php wrapper... > > //[dv] added to remove all comments (which may help with SQL injections > as well. > $sql = preg_replace("/#.*

Re: InnoDB dropping records / MyISAM working as it should

2007-05-15 Thread Jon Ribbens
On Tue, May 15, 2007 at 06:39:21PM -0500, Kenneth Loafman wrote: > Interesting... guess the intent was a disconnect that would break code > trying to work on MySQL, regardless of engine selected. That decision > makes it two products, MySQL/MyISAM and MySQL/InnoDB with different > semantics. Y

Re: InnoDB dropping records / MyISAM working as it should

2007-05-15 Thread Jon Ribbens
On Tue, May 15, 2007 at 04:13:33PM -0500, Kenneth Loafman wrote: > Can't tell. The docs are somewhat lacking in detail, however, if I do a > db.autocommit(True) it works as it should. > > Will have to dig into the API code and see if that is where the semantic > discontinuity lies. The MySQL-p

Re: Mysterious 'Lost connection' errors

2007-05-11 Thread Jon Ribbens
On Thu, May 10, 2007 at 05:17:12PM +0100, Jon Ribbens wrote: > I suspect some sort of bug in the MySQLd authentication code. I've managed to discover using --debug that it's due to MySQLd failing to handle EINTR from read() in the authentication stage. I've filed

Re: Mysterious 'Lost connection' errors

2007-05-10 Thread Jon Ribbens
On Thu, May 10, 2007 at 08:58:37AM -0600, mos wrote: > If you do a google search: > http://www.google.ca/search?q=lost+mysql+connection+%22reading+authorization+packet%22&hl=en&start=90&sa=N > > you'll find about a hundred web sites encountering the exact same error. Indeed, I noticed that ;-)

Re: Mysterious 'Lost connection' errors

2007-05-10 Thread Jon Ribbens
On Thu, May 10, 2007 at 03:37:26AM +0100, Jon Ribbens wrote: > I've just upgraded all the clients and servers to 5.0.41 (which looks > like it just came out); I'll see what happens. It hasn't solved the problem, but it has changed the error message to: OperationalEr

Re: Mysterious 'Lost connection' errors

2007-05-09 Thread Jon Ribbens
On Wed, May 09, 2007 at 10:07:41PM -0400, Mathieu Bruneau wrote: > We found a similar issue because we were using persistent connection in > php and had a firewall between the mysql and the webserver. The problem > is that our persistent connection were setup for lasting up to something > like 8 ho

Re: Query problem

2007-05-09 Thread Jon Ribbens
On Wed, May 09, 2007 at 07:14:38PM +0200, Martijn Tonies wrote: > >I have a table of properties that is linked to a table f images with a one > property to many images relationship. I >have manged this with nested > queries but want to try and do it on one line. My current query > > > >$query = "S

Re: Mysterious 'Lost connection' errors

2007-05-09 Thread Jon Ribbens
On Wed, May 09, 2007 at 11:17:59AM -0400, Michael Dykman wrote: > When we first examined our server logs, we saw the same.. in our case > (again) it was only when we slowed down and examined the timestamps on > the start/stop messages that we realized that the server was > restarting at unexpected

Re: Mysterious 'Lost connection' errors

2007-05-09 Thread Jon Ribbens
On Wed, May 09, 2007 at 09:22:34AM -0400, Michael Dykman wrote: > I realize that's quite unlikely that you have performed a similar > sloppy import but there is likely some edge condition on your server > (wierd permissions in the data directory, corruoted tables, etc.) > but I still recommend that

Mysterious 'Lost connection' errors

2007-05-09 Thread Jon Ribbens
We are using MySQL 5.0.27 on RedHat Enterprise Linux ES release 4, and the MySQL-python-1.2.1_p2 connector. We are getting intermittent mysterious errors as follows: OperationalError: (2013, 'Lost connection to MySQL server during query') when attempting to connect to the MySQL server (not

MySQL 5.1.14 Release - Change in Cluster System Tables

2006-12-11 Thread Jon Stephens
ke it into the official 5.1.14 release announcement is entirely my fault, and I hope you will accept my deepest apologies for the omission. cheers, j. -- Jon Stephens - [EMAIL PROTECTED] Technical Writer - MySQL Documentation Team ___ Brisbane, Australia (GMT +10.00) _x_ Bangkok, Thailand (GMT +

Re: BINARY(N) as primary key?

2006-11-08 Thread Jon Frisby
l Fischer wrote: On Wed, Nov 08, Jon Frisby wrote: On Nov 7, 2006, at 6:47 PM, Michael Fischer wrote: Any thoughts on using BINARY(N) or CHAR(N) as a primary key? Performance issues? In mysql, in general? Yes, in the context of the application, there is a very good reason for doing th

Re: BINARY(N) as primary key?

2006-11-08 Thread Jon Frisby
I'm curious to know why simply having a UNIQUE constraint on the column is inadequate... -JF On Nov 7, 2006, at 6:47 PM, Michael Fischer wrote: Any thoughts on using BINARY(N) or CHAR(N) as a primary key? Performance issues? In mysql, in general? Yes, in the context of the application, th

jdbc question regarding enum

2006-11-01 Thread Jon Drukman
disclaimer: i know nothing about java or jdbc. a co-worker is trying to access a database i've set up using jdbc. he says that my enum column is always returning an integer value instead of the string. obviously this is less than desirable. does anybody have any advice i could give him on w

Re: MyISAM vs InnoDB

2006-11-01 Thread Jon Ribbens
Miles Thompson <[EMAIL PROTECTED]> wrote: > At 07:56 AM 11/1/2006, Leandro Guimarães Faria Corcete DUTRA wrote: > > .. further notices; and SolidDB, which > >is still β. > > Help this poor English-speaker - what's the symbol you use to describe > SolidDB? I assume it is a "beta" character, sin

How can I do a SELECT without locking the table against updates?

2006-10-19 Thread Jon Ribbens
I have a simple single-table SELECT query that takes of several minutes to complete, due to a very large number of result rows being involed. I don't think there is any way to optimise the query - MySQL is already using the appropriate index etc, it's just a huge table and the query has a large res

Re: Partition Help

2006-10-08 Thread Jon Stephens
These include: http://dev.mysql.com/tech-resources/articles/mysql_5.1_partitioning_with_dates.html http://dev.mysql.com/tech-resources/articles/mysql_5.1_partitions.html - both of which discuss date-based partitioning techniques that you might find useful. cheers jon. -- Jon Stephens - [EMAIL PROTE

Re: write-protection for some tables while other are writable

2006-08-23 Thread Jon Molin
t both, LOCK TABLES and read-only in my.cnf, don't get this result. How about only granting select rights to the user? /Jon -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]

Re: Slow queries

2006-08-17 Thread Jon Molin
On 8/17/06, Chris <[EMAIL PROTECTED]> wrote: > Unfortunately didn't that help, it leads to: > ++-+---+---+--- > > | id | select_type | table | type | possible_keys > | key | key_len | ref | rows| Extra >

Re: Slow queries

2006-08-17 Thread Jon Molin
On 8/17/06, Chris <[EMAIL PROTECTED]> wrote: Jon Molin wrote: > Hi list > > I have 5 tables: > > words (word_id int auto_increment, word varbinary(40)) (has ~3.5M > rows) with the keys: > PRIMARY KEY (`word_id`),UNIQUE KEY `word_ind` (`word`) > > phrases (phr

Slow queries

2006-08-17 Thread Jon Molin
h the files nfs mounted. mysqladmin status doesn't show any slow queries: Uptime: 1215323 Threads: 2 Questions: 2191970 Slow queries: 0 Opens: 0 Flush tables: 1 Open tables: 64 Queries per second avg: 1.804 Thanks in advance /Jon -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]

Re: MySQL Load Balancing

2006-08-08 Thread Jon Drukman
Ed Pauley II wrote: This is another geographical location with automatic failover if there is a problem, network, hardware etc. with the primary location. When the problem is corrected, or corrects itself the traffic is automatically sent back to the primary location. Without 2-way replication

Re: Stored procedures

2006-07-30 Thread Jon
Thanks both Devanada and Peter, your replies helped me resolve it. /Jon On 7/30/06, Peter Brawley <[EMAIL PROTECTED]> wrote: *>I'm trying to make stored procedures use parameters for limit and tables, I >guess this is either me using the wrong datatype or it's not pos

Re: Stored procedures

2006-07-25 Thread Jon Molin
On 7/25/06, Chris White <[EMAIL PROTECTED]> wrote: On Tuesday 25 July 2006 02:10 am, Jon wrote: > CREATE PROCEDURE sp_test1 (IN some_limit int) > select * from some_table limit some_limit; > > and > CREATE PROCEDURE sp_test2 (IN some_table table) > select * from some

Re: Stored procedures

2006-07-25 Thread Jon
But the scope of a prepared statement is only the session? I want a stored procedure to avoid some sql in clientside code...Or do you mean a prep in the stored? /Jon On 7/25/06, Burke, Dan <[EMAIL PROTECTED]> wrote: If I understand correctly, what you need is prepared statements.

Re: Stored procedures

2006-07-25 Thread Jon
On 7/25/06, Visolve DB Team <[EMAIL PROTECTED]> wrote: Hello Jon. Hi there Team :) And thanks for the quick reply Could you tell me the version of MySql ?. You can find the version by excuting the command SELECT version() If the version is below 5, the stored procedure feature

Stored procedures

2006-07-25 Thread Jon
s or something completely different? Thanks in advance Jon

Re: I don't understand why SCSI is preferred.

2006-07-14 Thread Jon Frisby
It was my impression, from the information we've collected that our problem is very specific to Opteron. It's possible that your problem is actually unrelated. :( -JF On Jul 14, 2006, at 7:24 AM, living liquid|Christian Meisinger wrote: We're using Opterons, Linux 2.6.x, and a SiL (Silic

Re: I don't understand why SCSI is preferred.

2006-07-13 Thread Jon Frisby
On Jul 13, 2006, at 3:03 PM, mos wrote: At 03:45 PM 7/12/2006, Jon Frisby wrote: This REALLY should be an academic concern. Either you have a system that can tolerate the failure of a drive, or you do not. The frequency of failure rates is pretty much irrelevant: You can train incredibly

Re: I don't understand why SCSI is preferred.

2006-07-13 Thread Jon Frisby
We're using Opterons, Linux 2.6.x, and a SiL (Silicon Image) SATA chipset whose particular model number I don't have in front of me. After MUCH MUCH MUCH trial and error we've discovered that: 1) 2.6.16 substantially alleviates the problem but doesn't eliminate it. 2) There is a 3Ware card that

Re: I don't understand why SCSI is preferred.

2006-07-12 Thread Jon Frisby
On Jul 12, 2006, at 12:58 PM, Chris White wrote: On Tuesday 11 July 2006 04:18 pm, Brian Dunning wrote: My understanding is that SCSI has a faster transfer rate, for transferring large files. A busy database needs really fast access, for making numerous fast calls all over the disk. Two differ

Re: I don't understand why SCSI is preferred.

2006-07-12 Thread Jon Frisby
On Jul 12, 2006, at 12:56 PM, Daniel da Veiga wrote: On 7/12/06, mos <[EMAIL PROTECTED]> wrote: At 12:42 PM 7/12/2006, you wrote: >On Tuesday 11 July 2006 19:26, mos wrote: > > SCSI drives are also designed to run 24/7 whereas IDE drives are more > > likely to fail if used on a busy server.

Re: I don't understand why SCSI is preferred.

2006-07-12 Thread Jon Frisby
On Jul 12, 2006, at 12:45 PM, Scott Tanner wrote: I am hoping the newer SATA II drives will provide SCSI performance at a reasonable price. It would be interesting to see if anyone has polled ISP's to see what they're using. I know they charge more (or at least they used to) for SCSI d

Re: I don't understand why SCSI is preferred.

2006-07-12 Thread Jon Frisby
This REALLY should be an academic concern. Either you have a system that can tolerate the failure of a drive, or you do not. The frequency of failure rates is pretty much irrelevant: You can train incredibly non-technical (inexpensive) people to respond to a pager and hot-swap a bad driv

Re: I don't understand why SCSI is preferred.

2006-07-11 Thread Jon Frisby
It's my understanding that the biggest remaining difference has to do with SCSI having far superior command queueing capabilities -- although SATA's command queueing may have closed the gap somewhat -- which provides for much better real-world performance when you have multiple database thr

Re: Index and multiple fields

2006-04-03 Thread Jon Drukman
Markus Fischer wrote: Basically, this means if I've a table like this id1 id2 id3 id4 id5 and I've two different select statements: select * from ... where id1 = .. and id2 = .. and the other being select * from ... where id3 = .. and id4 = .. I would create two indexes, one for id1/id2 and

still cannot start MySQL

2006-03-17 Thread Jon Miller
I'm still having a problem starting MySQL. I get the following message: Unable to initialise database connection: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' I've check the /etc/mysql/my.cnf and the sock file is supposed to load in '/var/run/mysqld. Thanks

Replication: slaves don't change to new log file properly

2006-03-16 Thread Jon Drukman
Our mysql master machine crashed (hardware problem) and rebooted. When it came back up, it started a new master log file. The slaves, however, were all stuck on the last log file. They still showed both replication threads running, no errors, but they just did not advance. I had to manually

missing mysqld.sock

2006-03-14 Thread Jon Miller
Is there a way to recreate the mysqld.sock file, it has gone missing from :/var/run/mysqld . Now MySQL will not run. Thanks Jon L. Miller, ASE, CNS, CLS, MCNE, CCNA Director/Sr Systems Consultant MMT Networks Pty Ltd http://www.mmtnetworks.com.au Resellers for: Novell Gold Partner, Cisco

Unable to initialise database

2006-01-22 Thread Jon Miller
->connect ("DBI:mysql:mailscanner"; mailwatch, mailwatch); if ($dbh) {print "Connection successful! \n" } error message: DBI version 192.168.10.4 required--this is only version 1.46 at /usr/share/perl/5.8/Exporter/Heavy.pm line 107. BEGIN failed--compilation aborted at ./dbi.p

upgrade advice

2006-01-21 Thread Jon Miller
tem but I believe this to be Version: 4.0.18 Release: 32.20 (this is with Service Pack 3 from Novell). How do I do a backup of the existing and restore to the current? Are there any changes that may cause my apps to have a fit? Thanks Jon -- MySQL General Mailing List For list arch

table missing

2006-01-12 Thread Jon Miller
I've created a database with a table and etc. I'm now getting a msg stating the table has gone missing. Is their a way to either reindex or import the database so the table can show up. Thanks -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:htt

script error in program.

2006-01-11 Thread Jon Miller
Having an error in a script that I cannot figure out why it's not working. The problem is on line 15 "while ($row = mysql_fetch_object" ($result)). Movie Database Thanks -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.

missing table

2006-01-10 Thread Jon Miller
In a new setup I had the users table in MySQL. A few hours later I went to setup a new account and found out that the user table is missing. Is there a way to get it back? I can still login as root and myself. I wanted to add another user to the database. Thanks -- MySQL General Mailing Lis

error in script

2006-01-08 Thread Jon Miller
ee the databases and create databases, tables and input the data. I'm using Apache2, PHP4 and MySQL Ver 12.22 Distrib 4.0.24, for pc-linux-gnu (i386) Thanks Jon Movie Database Fatal error: Call to undefined function: mysql_connect() in /var/www/test5.php on line 8 /var/www/tes

tutorial sites

2006-01-07 Thread Jon Miller
Does anyone know of some good tutorial sites of using Apache, PHP and MySQL.? Just starting out and want to create a website (mine) where I can change up the data as often as I. Thanks Jon L. Miller, ASE, CNS, CLS, MCNE, CCNA Director/Sr Systems Consultant MMT Networks Pty Ltd http

missing mysqld.sock

2006-01-06 Thread Jon Miller
I've installed mysql 4 and noticed that both mysql 4.0 and 4.1 was on the system. In my attempt to remove the older version I may have done away with my mysqld.sock. When I try to access mysql i'm getting the following message: debOS:~# /etc/init.d/mysql start Starting MySQL database server: my

logging issue

2006-01-03 Thread Jon Miller
System: Red hat 7.2 My SQL modules: MySQL-devel-4.0.13-0 php-mysql-4.1.2-7.2.6 MySQL-shared-3.23.55-1 MySQL-server-4.0.13-0 MySQL-client-4.0.13-0 CAMysql-9.0-220 Msql-Mysql-DBI-perl-bin-1.1823-1 I would like to log or turn on the facility to do a verbose logging to troubleshoot an issue I'm havi

need to upgrade

2006-01-01 Thread Jon Miller
I need to upgrade MySQL from a RH7.2 server to either a Suse Enterprise 9.2 or Debian 3.1 server. I understand that the only way to get the data from the RH7.2 server is via mysqldump. Are there any gotchas or issues doing this? Thanks -- MySQL General Mailing List For list archives: http://

testing for connectivity to database

2005-12-31 Thread Jon Miller
I'm trying to initialize to a database on another server from a mail server. I can telnet to it but cannot initialize the database. The account and user exists in the database and the paasword as I've tried it from the mysql server. Is there another test I can do to find out exactly what is caus

cannot connect to database

2005-12-31 Thread Jon Miller
I'm trying to initialize to a database on another server from a mail server. I can telnet to it but cannot initialize the database. The account and user exists in the database and the paasword as I've tried it from the mysql server. Is there another test I can do to find out exactly what is caus

rentering a sql script

2005-12-30 Thread Jon Miller
I have a sql script that needs to be re entered using the following command mysql < create.sql but the database already exists. IS there a way to overwrite or update the database using the script, or do I have to delete the existing database? I have a sql script that needs to be re entered

installed modules

2005-12-30 Thread Jon Miller
Like to know how to query MySQL for loaded or installed modules. Is this done through using the code: I'm looking on my system for loaded modules such as DBD-MySQL, zlib-devel and perl-DBI. Thanks Like to know how to query MySQL for loaded or installed modules.  Is this done through u

MySQL Control Center

2005-11-22 Thread Jon Drukman
What happened to MySQL Control Center (aka mycc or mysqlcc)? The dev.mysql.com site redirects to the Query Browser page. QB is a poor substitute for mycc. It looks like neither of them has had active development much lately but at least mycc, even in its beta stage, is fairly useful. -jsd-

Re: Replication fails with "file not found" error - but file is there

2005-11-01 Thread Jon Drukman
Gleb Paharenko wrote: Hello. Have a look here: http://dev.mysql.com/doc/refman/5.0/en/not-enough-file-handles.html thanks, i've upped the open-files-limit variable. we'll see how it goes. -jsd- -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscri

Replication fails with "file not found" error - but file is there

2005-10-31 Thread Jon Drukman
Master and slaves are both Mysql 4.1.14 standard. There are six slaves, and this error kept happening on #2 and #4, but then it stopped. I thought it was all gone for good but today it happened on #3. The symptom is: Replication stops with the following error: Error 'Can't find file: './gspo

RE: Input on Materialized Views

2005-10-21 Thread Jon Frisby
> Better, mark this view (or particular rows if it's not too > expensive) as "dirty" and recompute it only on access, you > may spare few cycles... That sort of depends on what you're going for. Typically materialized views are used for summarizations of hypercubes for OLAP systems (data marts

RE: Turning tables on their side

2005-10-19 Thread Jon Frisby
Create an Excel spreadsheet. Import the raw data, structured as-is, into a worksheet. Select all the relevant columns. Go to Data -> "Pivot Table and Pivot Chart Report". Click "Finish". From the "PivotTable Field List", drag the respondant ID into the box labeled "Drop Row Fields Here", then

RE: Turning tables on their side

2005-10-19 Thread Jon Frisby
You want a Pivot Table. Excel will do this nicely (assuming you have 65536 rows or less), but SQL does not provide a mechanism to do this. If you want a web based interface you can look at Jtable. (I *think* that's what it's called -- it's a Java web app that provides an HTML pivot table interfac

RE: Non-linear degradation in bulk loads?

2005-10-17 Thread Jon Frisby
the sole application on the machine? -JF > -Original Message- > From: Heikki Tuuri [mailto:[EMAIL PROTECTED] > Sent: Monday, October 17, 2005 10:55 AM > To: mysql@lists.mysql.com > Subject: Re: Non-linear degradation in bulk loads? > > Jon, > > I am not 100 % s

RE: Non-linear degradation in bulk loads?

2005-10-17 Thread Jon Frisby
-Original Message- > From: Heikki Tuuri [mailto:[EMAIL PROTECTED] > Sent: Monday, October 17, 2005 10:52 AM > To: mysql@lists.mysql.com > Subject: Re: Non-linear degradation in bulk loads? > > Jon, > > I do not know. Why not install a 64-bit Linux in your compute

RE: Non-linear degradation in bulk loads?

2005-10-17 Thread Jon Frisby
com > Subject: Re: Non-linear degradation in bulk loads? > > Jon, > > your hardware/OS combination is quite new and unusual. It > might indeed be an OS problem. We observed from a 64-bit RHEL > 4 that when the file cache of the OS grew bigger than 4 GB, > then the file I/

RE: Non-linear degradation in bulk loads?

2005-10-17 Thread Jon Frisby
n-linear degradation in bulk loads? > > Jon, > > your hardware/OS combination is quite new and unusual. It > might indeed be an OS problem. We observed from a 64-bit RHEL > 4 that when the file cache of the OS grew bigger than 4 GB, > then the file I/O performance dropped

RE: Non-linear degradation in bulk loads?

2005-10-17 Thread Jon Frisby
About 6GB... Is there any way to forcibly limit this? -JF > -Original Message- > From: Heikki Tuuri [mailto:[EMAIL PROTECTED] > Sent: Sunday, October 16, 2005 2:23 AM > To: mysql@lists.mysql.com > Subject: Re: Non-linear degradation in bulk loads? > > Jon,

RE: Non-linear degradation in bulk loads?

2005-10-14 Thread Jon Frisby
L PROTECTED] > Sent: Wednesday, October 12, 2005 8:15 AM > To: mysql@lists.mysql.com > Subject: Re: Non-linear degradation in bulk loads? > > Jon, > > hmm... maybe one of the indexes inevitably is in a random order. > > Please post a typical > > SHOW INNODB

RE: Non-linear degradation in bulk loads?

2005-10-11 Thread Jon Frisby
> Two solutions: 1) sort the rows to be inserted on the key > 'email' before inserting. > > 2) Or: > > http://dev.mysql.com/doc/mysql/en/innodb-tuning.html > " > If you have UNIQUE constraints on secondary keys, starting from MySQL > 3.23.52 and 4.0.3, you can speed up table imports by > tempor

RE: Non-linear degradation in bulk loads?

2005-10-10 Thread Jon Frisby
ginal Message- > From: Manoj [mailto:[EMAIL PROTECTED] > Sent: Monday, October 10, 2005 8:51 PM > To: Jon Frisby > Cc: mysql@lists.mysql.com > Subject: Re: Non-linear degradation in bulk loads? > > Not sure but given that you suffer from non-linear > degradation in performan

Non-linear degradation in bulk loads?

2005-10-10 Thread Jon Frisby
Everyone, We're trying to do some bulk data loads on several different tables (on several different machines, using several different techniques) and seeing dramatically worse-than-linear performance. We've tried the bulk-INSERT syntax, and the LOAD DATA INFILE syntax. We've done ALTER TABLE ...

Recommendations for memory use with 16GB

2005-09-27 Thread Jon Drukman
I'm moving from 32-bit intel to the brave new world of AMD64. Our new servers are dual Opterons with 16GB of RAM. We will be running mysql 4.1.14-standard on redhat enterprise linux 4 x86_64. Since I'm new to this, what's my best bang-for-buck in setting up mysql's memory usage? -jsd- --

Re: Finding the "most recent" related record?

2005-08-17 Thread Jon Drukman
Brian Dunning wrote: I have a table of questions, and a table of answers. Each question has a related answer record for each person who has answered that question, and each answer is timestamped. How do I find a list of questions where the MOST RECENT answer is less than 30 days ago? (Basic

Re: convert varchar to char

2005-08-16 Thread Jon Drukman
Pooly wrote: Damnit ! Thanks for pointing it, I forgot these things. But it's a bit more subtle : If any column in a table has a variable length, the entire row becomes variable-length as a result. Therefore, if a table contains any variable-length columns (VARCHAR, TEXT, or BLOB), all CHAR colu

Re: slow count(1) behavior with large tables

2005-07-15 Thread Jon Drukman
Andrew Braithwaite wrote: Sorry, I meant to say is the 'BoardID' field indexed on the MBOARD table too? yes, BoardID is the primary key. BaseType is also indexed. from the EXPLAIN output i can see that mysql is choosing to use BaseType as the index for MBOARD (as we know, mysql can only use

Re: slow count(1) behavior with large tables

2005-07-15 Thread Jon Drukman
Andrew Braithwaite wrote: Hi, You're doing a join on 'BoardID' on the tables MSGS and MBOARD. Is the BoardID field indexed on the MSGS table too? If not then that may be your problem. MSGS.BoardID is indexed, and the EXPLAIN output I included in the original message shows that it is indeed

slow count(1) behavior with large tables

2005-07-15 Thread Jon Drukman
i'm trying to run this query: SELECT COUNT(1) FROM MSGS m, MBOARD b WHERE b.BaseType = 0 AND m.BoardID = b.BoardID; MSGS has 9.5 million rows, and is indexed on BoardID MBOARD has 69K rows and is indexed on BaseType EXPLAIN shows: mysql> explain SELECT COUNT(1) FROM MSGS m, MBOARD b WHERE b.

Problem with query

2005-05-24 Thread Jon Miller
Quite new to MySQl and queries in general and would like some help in the following query: select prDate, prName, prLEmployee, prDescription, prTotalHours, prLStatus, prCompletionDate, prActive from tProject where prDate >=2005-05-09 It generates a listing that has years from 2001 to present. A

MySQL on AIX 5.1

2005-05-09 Thread Jon Earle
led 4.1.10a for AIX 4.3.3 and resolveip seems to work. Would still like to get a current version (4.1.11 for AIX5.1), or get it to compile. Cheers! Jon -- Jon Earle Software Developer / Network Manager Specialising in Open Source Software Solutions http://kronos.honk.org/~earlej/ "Rocket s

Re: Problem compiling mysql 4.1.11 on AIX 5.1

2005-05-09 Thread Jon Earle
ib, /usr/lib or some other standard place. If this is the problem, install the static libraries and try again. If this isn't the problem, examine config.log for possible errors. If you want to report this, use 'scripts/mysqlbug' and include at least the last 20 rows from config

Problem compiling mysql 4.1.11 on AIX 5.1

2005-05-06 Thread Jon Earle
ey're 64-bit, so I'm currently a) rebuilding openssl to include shared libs and b) adding the right option to build mysql in 64-bit mode. I will see if I get further. As of now, I believe my Qs are: 1. What is the correct usage of curses, term and termcap? Which do I need? And

index slowing things down?

2005-05-06 Thread Jon Beyer
ND `f09` =1 AND `f10` =1 runs in 0.07 seconds with 200,000 records. When I add indeces to fields f01 and f02, the query now takes 0.23 seconds. Is this expected? Is this simply the time required to load the index? Are indeces simply not designed to work with something of such low cardi

RE: Out of memory, but plenty of swap space left

2005-04-08 Thread Jon Wagoner
m/order.php ----- Original Message - From: ""Jon Wagoner"" <[EMAIL PROTECTED]> Newsgroups: mailing.database.myodbc Sent: Thursday, April 07, 2005 7:31 PM Subject: Out of memory, but plenty of swap space left > Recently I've been getting error 1041 at times,

Re: recovery of a very large table?

2005-04-07 Thread jon
for index: 1 MyISAM-table 'theTable' is corrupted Fix it using switch "-r" or "-o" Renato Golin wrote: On Wednesday 06 April 2005 20:05, jon wrote: Normal recovery seems to grab 490 rows... but, originally there were some 22 million rows in there. Seems your data fi

RE: Query question

2005-04-07 Thread Jon Wagoner
SELECT product_lines.* FROM product_lines LEFT JOIN manufacturer_product_line_index ON manufacturer_product_line_index.product_line_id = product_lines.id WHERE product_lines.id IS NULL -Original Message- From: Ed Lazor [mailto:[EMAIL PROTECTED] Sent: Thursday, April 07, 2005 11:39 AM To:

Out of memory, but plenty of swap space left

2005-04-07 Thread Jon Wagoner
Recently I've been getting error 1041 at times, which gives the message to update the ulimit or add swap space. This is a dedicated MySQL server, so I have no ulimit set for MySQL. According to /proc/meminfo I have over 1GB of swap free. Mem: 2118533120 2067628032 509050880 19677184 165

recovery of a very large table?

2005-04-06 Thread jon
int, but I'm not sure. So... what are my options here? Machine is linux - using ubuntu on the recovery box. -- jon -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]

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