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  • MySQL select using datetime, group by date only

    - by Matt
    Is is possible to select a datetime field from a MySQL table and group by the date only? I'm trying to output a list of events that happen at multiple times, grouped by the date it happened on. My table/data looks like this: (the timestamp is a datetime field) 1. 2010-03-21 18:00:00 Event1 2. 2010-03-21 18:30:00 Event2 3. 2010-03-30 13:00:00 Event3 4. 2010-03-30 14:00:00 Event4 I want to output something like this: March 21st 1800 - Event 1 1830 - Event 2 March 30th 1300 - Event 3 1400 - Event 4 Thanks!

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  • Integer in MySQL procedure, syntax error

    - by confiq
    I made simple procedure just to demonstrate CREATE PROCEDURE `demo`(demo_int int) BEGIN DECLARE minid INT; SELECT min(id) FROM (SELECT id FROM events LIMIT demo_int,9999999999999999) as hoo INTO minid; END$$ The problem is with demo_int, if i change it to LIMIT 1,9999999999999999 it works but LIMIT demo_int,9999999999999999 Does not... It gives error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'demo_int,9999999999999999) as hoo INTO minid; END' at line 4 (errno: 1064) Any clues?

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  • mysql service do not launch

    - by ted
    Sorry for my English; I was trying to create db with rake in RoR application that has been configured for MySQL(gem installed, settings changed). After that attempt mysql-server broke: d@calister:~$ mysql ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) mysqld is not running at all: d@calister:~$ ps aux | grep mysql d 3769 0.0 0.0 4368 832 pts/0 S+ 18:03 0:00 grep --color=auto mysql And also it doesn't seem it would like to run: d@calister:~$ sudo service mysql start start: Job failed to start Any suggestions? Thanks EDIT: d@calister:~$ sudo -u mysql mysqld 120520 18:45:11 [Note] Plugin 'FEDERATED' is disabled. mysqld: Table 'mysql.plugin' doesn't exist 120520 18:45:11 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it. 120520 18:45:11 InnoDB: The InnoDB memory heap is disabled 120520 18:45:11 InnoDB: Mutexes and rw_locks use GCC atomic builtins 120520 18:45:11 InnoDB: Compressed tables use zlib 1.2.3.4 120520 18:45:11 InnoDB: Initializing buffer pool, size = 128.0M 120520 18:45:11 InnoDB: Completed initialization of buffer pool 120520 18:45:11 InnoDB: highest supported file format is Barracuda. 120520 18:45:12 InnoDB: Waiting for the background threads to start 120520 18:45:13 InnoDB: 1.1.8 started; log sequence number 1589459 120520 18:45:13 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist

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  • Attend MySQL Webinars This Week

    - by Bertrand Matthelié
    Interested in learning more about MySQL as embedded database? In building highly available MySQL applications with MySQL and DRBD? Join our webinars this week! All information below. Tuesday next week (November 20) we will provide an update about what's new in MySQL Enterprise Edition. We have live Q&A during the webinars so you'll get the chance to ask all your questions. Top 10 Reasons to Use MySQL as an Embedded Database Tuesday, November 13 9:00 a.m. PT Review the top 10 reasons why MySQL is technically well-suited for embedded use, as well as the related business reasons vendors choose MySQL initially, over time, and across product-lines. Register for the Webcast. MySQL High Availability with Distributed Replicated Block Device Thursday, November 15 9:00 a.m. PT Learn how to build highly available services with MySQL and distributed replicated block device (DRBD). The DRBD high-availability solution comprises a complete stack of open source software that delivers high-availability database clusters on commodity hardware, with the option of 24/7 support from Oracle. Register for the Webcast. Technology Update: What's New in MySQL Enterprise Edition Tuesday, November 20 9:00 a.m. PT Find out what's new in MySQL Enterprise Edition. Register for the Webcast.

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  • ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

    - by Imran
    Can someone please help as i've spent all day trying to fix this. I installed the latest XAMPP and now i can't connect to mysql from terminal.I checked my .profile file and the PATH seems ok. Does anyone know whats happened and what's the solution? PATH=$PATH:/Applications/XAMPP/xamppfiles/bin export PATH THIS IS A PROGRAMMING QUESTION AS I'M A PHP DEVELOPER TRYING TO DO MY JOB! Thankyou soo much in advance;-)

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  • DBA - SQL Server 2005 - Backups

    - by subhash.pant
    I am trying to figure out how SQL Server DBAs are doing their backups and verify in 2005. I use the Idera's free stored procs (which is no longer available to download btw) to backup and verify and have gotten around 65% compression. If there any other free alternative? Thanks in advance, -Subhash

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  • Mysql Cluster not working on Ubuntu

    - by user53864
    I am unable to setup MySQL Cluster on ubuntu servers. As a starting point I started from the link but I am not successful and the tar ball version I download is 6.3.45. As I wanted to test the mysql cluster, the Data node and SQL node are same but sql never appeared as connected in management node console and it looks like below. [ndbd(NDB)] 2 node(s) id=2 @192.168.1.107 (Version: version number, Nodegroup: 0, Master) id=3 @192.168.1.108 (Version: version number, Nodegroup: 0) [ndb_mgmd(MGM)] 1 node(s) id=1 @192.168.1.105 (Version: version number) [mysqld(API)] 2 node(s) id=4 (not connected, accepting connect from 192.168.1.107) id=5 (not connected, accepting connect from 192.168.1.108) On all the 3 machines mysql-server & client(apt-get install mysql-server mysql-client) were already installed and I completely stopped and also removed them at the system start up. Now the mysqld is from extracted cluster tar ball(/usr/local/mysql/support-files/mysql.server). As for testing, I created a test database on both the data nodes but the tables are also not syncing on other node. I checked many links, configurations are remained similar in all the links but somewhere it's going wrong. Anymore extra package is required?, Could anyone help me here..?. I am trying this for past 3 days... Thank you!

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  • MySQL Cluster 7.3: On-Demand Webinar and Q&A Available

    - by Mat Keep
    The on-demand webinar for the MySQL Cluster 7.3 Development Release is now available. You can learn more about the design, implementation and getting started with all of the new MySQL Cluster 7.3 features from the comfort and convenience of your own device, including: - Foreign Key constraints in MySQL Cluster - Node.js NoSQL API  - Auto-installation of higher performance distributed, clusters We received some great questions over the course of the webinar, and I wanted to share those for the benefit of a broader audience. Q. What Foreign Key actions are supported: A. The core referential actions defined in the SQL:2003 standard are implemented: CASCADE RESTRICT NO ACTION SET NULL Q. Where are Foreign Keys implemented, ie data nodes or SQL nodes? A. They are implemented in the data nodes, therefore can be enforced for both the SQL and NoSQL APIs Q. Are they compatible with the InnoDB Foreign Key implementation? A. Yes, with the following exceptions: - InnoDB doesn’t support “No Action” constraints, MySQL Cluster does - You can choose to suspend FK constraint enforcement with InnoDB using the FOREIGN_KEY_CHECKS parameter; at the moment, MySQL Cluster ignores that parameter. - You cannot set up FKs between 2 tables where one is stored using MySQL Cluster and the other InnoDB. - You cannot change primary keys through the NDB API which means that the MySQL Server actually has to simulate such operations by deleting and re-adding the row. If the PK in the parent table has a FK constraint on it then this causes non-ideal behaviour. With Restrict or No Action constraints, the change will result in an error. With Cascaded constraints, you’d want the rows in the child table to be updated with the new FK value but, the implicit delete of the row from the parent table would remove the associated rows from the child table and the subsequent implicit insert into the parent wouldn’t reinstate the child rows. For this reason, an attempt to add an ON UPDATE CASCADE where the parent column is a primary key will be rejected. Q. Does adding or dropping Foreign Keys cause downtime due to a schema change? A. Nope, this is an online operation. MySQL Cluster supports a number of on-line schema changes, ie adding and dropping indexes, adding columns, etc. Q. Where can I see an example of node.js with MySQL Cluster? A. Check out the tutorial and download the code from GitHub Q. Can I use the auto-installer to support remote deployments? How about setting up MySQL Cluster 7.2? A. Yes to both! Q. Can I get a demo Check out the tutorial. You can download the code from http://labs.mysql.com/ Go to Select Build drop-down box Q. What is be minimum internet speen required for Geo distributed cluster with synchronous replication? A. if you're splitting you cluster between sites then we recommend a network latency of 20ms or less. Alternatively, use MySQL asynchronous replication where the latency of your WAN doesn't impact the latency of your reads/writes. Q. Where you can one learn more about the PayPal project with MySQL Cluster? A. Take a look at the following - you'll find press coverage, a video and slides from their keynote presentation  So, if you want to learn more, listen to the new MySQL Cluster 7.3 on-demand webinar  MySQL Cluster 7.3 is still in the development phase, so it would be great to get your feedback on these new features, and things you want to see!

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  • MySQL Connector/Net 6.4.6 Maintenance Release has been released

    - by fernando
    MySQL Connector/Net 6.4.6, a new version of the all-managed .NET driver for MySQL has been released.  This is a maintenance release and is recommended for use in production environments. It is appropriate for use with MySQL server versions 5.0-5.6. This is intended to be the final release for Connector/NET 6.4. It is now available in source and binary form from http://dev.mysql.com/downloads/connector/net/#downloads and mirror sites (note that not all mirror sites may be up to date at this point-if you can't find this version on some mirror, please try again later or choose another download site.) The 6.4.6 version of MySQL Connector/Net brings the following fixes: - Fix for List.Contains generates a bunch of ORs instead of more efficient IN clause in   LINQ to Entities (Oracle bug #14016344, MySql bug #64934). - Fix for error when trying to change the name of an Index on the Indexes/Keys editor; along with this fix now users can change the Index type of a new Index which could not be done   in previous versions, and when changing the Index name the change is reflected on the list view at the left side of the Index/Keys editor (Oracle bug #13613801). - Fix for stored procedure call using only its name with EF code first (MySql bug #64999, Oracle bug #14008699). - Fix for performance issue in generated EF query: .NET StartsWith/Contains/EndsWith produces MySql's locate instead of Like (MySql bug #64935, Oracle bug #14009363). - Fix for script generated for code first contains wrong alter table and wrong declaration for byte[] (MySql bug #64216, Oracle bug #13900091). - Fix for Exception thrown when using cascade delete in an EDM Model-First in Entity Framework (Oracle bug #14008752, MySql bug #64779). - Fix for Session locking issue with MySqlSessionStateStore (MySql bug #63997, Oracble bug #13733054). - Fixed deleting a user profile using Profile provider (MySQL bug #64409, Oracle bug #13790123). - Fix for bug Cannot Create an Entity with a Key of Type String (MySQL bug #65289, Oracle bug #14540202). This fix checks if the type has a FixedLength facet set in order to create a char otherwise should create varchar, mediumtext or longtext types when using a String CLR type in Code First or Model First also tested in Database First. Unit tests added for Code First and ProviderManifest. - Fix for bug "CacheServerProperties can cause 'Packet too large' error" (MySQL Bug #66578 Orabug #14593547). - Fix for handling unnamed parameter in MySQLCommand. This fix allows the mysqlcommand to handle parameters without requiring naming (e.g. INSERT INTO Test (id,name) VALUES (?, ?) ) (MySQL Bug #66060, Oracle bug #14499549). - Fixed inheritance on Entity Framework Code First scenarios. Discriminator column is created using its correct type as varchar(128) (MySql bug #63920 and Oracle bug #13582335). - Fixed "Trying to customize column precision in Code First does not work" (MySql bug #65001, Oracle bug #14469048). - Fixed bug ASP.NET Membership database fails on MySql database UTF32 (MySQL bug #65144, Oracle bug #14495292). - Fix for MySqlCommand.LastInsertedId holding only 32 bit values (MySql bug #65452, Oracle bug #14171960) by changing   several internal declaration of lastinsertid from int to long. - Fixed "Decimal type should have digits at right of decimal point", now default is 2, but user's changes in   EDM designer are recognized (MySql bug #65127, Oracle bug #14474342). - Fix for NullReferenceException when saving an uninitialized row in Entity Framework (MySql bug #66066, Oracle bug #14479715). - Fix for error when calling RoleProvider.RemoveUserFromRole(): causes an exception due to a wrong table being used (MySql bug #65805, Oracle bug #14405338). - Fix for "Memory Leak on MySql.Data.MySqlClient.MySqlCommand", too many MemoryStream's instances created (MySql bug #65696, Oracle bug #14468204). - Small improvement on MySqlPoolManager CleanIdleConnections for better mysqlpoolmanager idlecleanuptimer at startup (MySql bug #66472 and Oracle bug #14652624). - Fix for bug TIMESTAMP values are mistakenly represented as DateTime with Kind = Local (Mysql bug #66964, Oracle bug #14740705). - Fix for bug Keyword not supported. Parameter name: AttachDbFilename (Mysql bug #66880, Oracle bug #14733472). - Added support to MySql script file to retrieve data when using "SHOW" statements. - Fix for Package Load Failure in Visual Studio 2005 (MySql bug #63073, Oracle bug #13491674). - Fix for bug "Unable to connect using IPv6 connections" (MySQL bug #67253, Oracle bug #14835718). - Added auto-generated values for Guid identity columns (MySql bug #67450, Oracle bug #15834176). - Fix for method FirstOrDefault not supported in some LINQ to Entities queries (MySql bug #67377, Oracle bug #15856964). The release is available to download at http://dev.mysql.com/downloads/connector/net/6.4.html Documentation ------------------------------------- You can view current Connector/Net documentation at http://dev.mysql.com/doc/refman/5.5/en/connector-net.html You can find our team blog at http://blogs.oracle.com/MySQLOnWindows. You can also post questions on our forums at http://forums.mysql.com/. Enjoy and thanks for the support!

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  • Uninstalling MySQL for MariaDB Replacement on cPanel

    - by ImmortalFirefly
    Well the first part of my day was spent researching how to remove MySQL to install MariaDB and the second part of my day was spent trying to reinstall MySQL cause something was messed up. So now I come to the masses for some help. I have a box with cPanel/WHM on it. CentOS 5.6 64 bit. I have upgraded (through WHM) MySQL to 5.5.24 and that was successful. After some research, the options I found were an intimidating Linux command with pipes greps and dashes, and another command yum remove mysql I tried that out and it appeared to remove mysql.....ish. I tried installing MariaDB from this instructions page and it started to do it's thing and then came the zillions of errors (here's a small sample): Transaction Check Error: file /etc/init.d/mysql from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/bin/mysql_convert_table_format from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/bin/mysql_install_db from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/bin/mysql_secure_installation from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/bin/mysqlbug from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/bin/mysqld_multi from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/bin/mysqld_safe from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/bin/mysqldumpslow from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/bin/mysqlhotcopy from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/share/man/man1/innochecksum.1.gz from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/share/man/man1/my_print_defaults.1.gz from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/share/man/man1/myisam_ftdump.1.gz from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/share/man/man1/myisamchk.1.gz from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 file /usr/share/man/man1/myisamlog.1.gz from install of MariaDB-server-5.5.25-1.i386 conflicts with file from package MySQL-server-5.5.24-1.cp.1132.x86_64 So it appeared that MySQL wasn't removed correctly. I've read from different tutorials given on different sites that to install MariaDB, you had to uninstall/remove MySQL and there weren't any commands given on how to do this. Does anyone know how to "safely" remove MySQL on a WHM/cPanel server so that I can install MariaDB? Here's my repo file in case anyone needs to know... # MariaDB repository list - created 2012-07-10 17:09 UTC # http://downloads.mariadb.org/mariadb/repositories/ [mariadb] name = MariaDB baseurl = http://yum.mariadb.org/5.5/centos5-x86 gpgcheck=1

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  • Double MySQL Running on Mountain Lion

    - by Norris
    After I've done a full restart, my Apache PHP server doesn't connect to Local MySQL ( connecting via 127.0.0.1 because localhost for some reason fails always ). So I did this today: ? ~ mysqladmin shutdown -u root -p Enter password: ? ~ mysqladmin shutdown -u root -p Enter password: mysqladmin: connect to server at 'localhost' failed error: 'Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)' Check that mysqld is running and that the socket: '/tmp/mysql.sock' exists! Which basically means that I succeeded in shutting down mysql. But as soon as I did - Apache PHP successfully connect to MySQL and my local sites work without a hiccup until the next restart. Here are a few other details: (as you can tell - I've installed MySQL via brew) ? ~ sudo ps aux | grep mysql N 4774 0.0 0.0 2432768 620 s000 S+ 9:53AM 0:00.00 grep mysql N 4772 0.0 2.6 3030168 440688 ?? S 9:51AM 0:00.29 /usr/local/Cellar/mysql/5.6.13/bin/mysqld --basedir=/usr/local/Cellar/mysql/5.6.13 --datadir=/usr/local/var/mysql --plugin-dir=/usr/local/Cellar/mysql/5.6.13/lib/plugin --bind-address=127.0.0.1 --log-error=/usr/local/var/mysql/N.local.err --pid-file=/usr/local/var/mysql/N.local.pid N 4686 0.0 0.0 2433432 1000 ?? S 9:51AM 0:00.01 /bin/sh /usr/local/opt/mysql/bin/mysqld_safe --bind-address=127.0.0.1 N 4362 0.0 2.7 3120276 458728 ?? S 9:47AM 0:00.45 mysqld ? ~ lsof -i | grep mysql mysqld 4362 N 16u IPv6 0x76959e40691f9f93 0t0 TCP *:mysql (LISTEN) This is the weird thing: ? ~ killall -9 mysqld MySQL Is dead! Apache doesn't connect. Then, when I run: ? ~ sudo mysqladmin shutdown -u root -p Enter password: Apache is (again) able to successfully connect to MySQL. As far as I understand this means that I have two mysql servers setup and both of them are trying to start up at the same time, but I don't have the slightest idea on how to fix it. I've tried brew reinstalling but that didn't help. ? ~ which mysqladmin /usr/local/bin/mysqladmin ? ~ whence -p mysql /usr/local/bin/mysql

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  • How to tell if any MySQL connections has been dropped or timed out?

    - by Continuation
    A client is using PHP to connect to MySQL. The PHP scripts and the MySQL database are located on 2 different Linux servers. He complained that database connections were being dropped or timed out and asked me to take a look. Is there any place in MySQL that can show me what and how many connections have been dropped or timed out? I looked into slow query log and didn't see anything. Any suggestions on how to diagnose this dropped/timed out database connection problem? Thanks EDIT: Slow query log is enabled in my.cnf: log-slow-queries=/var/log/mysql-slow-queries.log And when I do a mysql> show global status; I got: | Slow_queries | 11402347 | So there are a lot of slow queries. But the file /var/log/mysql-slow-queries.log doesn't exist. Why is that?

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  • Why are symbolic links not working in MySQL?

    - by Eno
    I'm having an issue, I searched a lot but I'm not sure if it's related to a previous security patch. On the last version of MySQL on Debian Lenny ( 5.0.51a-24 ) I need to share one table between two db, those two db are in the same path ( /var/lib/mysql/db1 & db2 ). I created symbolic links for db2 pointing to the table in db1. When I query the same table from db2 I get this : 'ERROR 1030 (HY000): Got error 140 from storage engine' This is how it looks : test-lan:/var/lib/mysql/test3# ls -alh drwx------ 2 mysql mysql 4.0K 2010-08-30 13:28 . drwxr-xr-x 6 mysql mysql 4.0K 2010-08-30 13:29 .. lrwxrwxrwx 1 mysql mysql 28 2010-08-30 13:28 blbl.frm -> /var/lib/mysql/test/blbl.frm lrwxrwxrwx 1 mysql mysql 28 2010-08-30 13:28 blbl.MYD -> /var/lib/mysql/test/blbl.MYD lrwxrwxrwx 1 mysql mysql 28 2010-08-30 13:28 blbl.MYI -> /var/lib/mysql/test/blbl.MYI -rw-rw---- 1 mysql mysql 65 2010-08-30 13:24 db.opt I really need those symlinks, is there a way to make them working like before ? ( old MySQL-server is fine ) Thanks,

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  • MySQL taking a long time to start

    - by Dscoduc
    I'm running Windows Server 2008 with MySQL installed and every time I reboot the server the MySQL Service doesn't start right away. A look into the Windows Eventlog shows that the MySQL Service was hung at startup. Looking at the Services.msc console shows the service state at Starting... Eventually, like 10 minutes, the MySQL Service actually finishes the startup process and the database becomes available for my Wordpress server... I looked at the MySQL .err files and didn't find anything that would indicate a delay in the statup process... Can anyone suggest a way to determine what is causing the delay, and more importantly, how to prevent the delay in the MySQL Startup? UPDATE: Here is the .err log contents from the shutdown to the startup complete. Notice the startup begins at 10:30:00 and the MySQL isn't ready for connections until 10:47:14, a full 17 minutes later: 100322 10:27:06 [Note] C:\Program Files\MySQL\MySQL Server 5.1\bin\mysqld: Normal shutdown 100322 10:27:06 [Note] Event Scheduler: Purging the queue. 0 events 100322 10:27:06 InnoDB: Starting shutdown... 100322 10:27:08 InnoDB: Shutdown completed; log sequence number 4 3854351346 100322 10:27:08 [Warning] Forcing shutdown of 1 plugins 100322 10:27:08 [Note] C:\Program Files\MySQL\MySQL Server 5.1\bin\mysqld: Shutdown complete 100322 10:30:00 [Note] Plugin 'FEDERATED' is disabled. 100322 10:30:01 InnoDB: Started; log sequence number 4 3854351346 100322 10:47:14 [Note] Event Scheduler: Loaded 0 events 100322 10:47:14 [Note] C:\Program Files\MySQL\MySQL Server 5.1\bin\mysqld: ready for connections. UPDATE 2: MySQL is configured as a service (part of the install process, nothing I did) and executes the following syntax (as it appears in the registry): "C:\Program Files\MySQL\MySQL Server 5.1\bin\mysqld" --defaults-file="C:\Program Files\MySQL\MySQL Server 5.1\my.ini" MySQL

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  • Symbolic links not working in MySQL

    - by Eno
    I'm having an issue, I searched a lot but I'm not sure if it's related to a previous security patch. On the last version of MySQL on Debian Lenny ( 5.0.51a-24 ) I need to share one table between two db, those two db are in the same path ( /var/lib/mysql/db1 & db2 ). I created symbolic links for db2 pointing to the table in db1. When I query the same table from db2 I get this : 'ERROR 1030 (HY000): Got error 140 from storage engine' This is how it looks : test-lan:/var/lib/mysql/test3# ls -alh drwx------ 2 mysql mysql 4.0K 2010-08-30 13:28 . drwxr-xr-x 6 mysql mysql 4.0K 2010-08-30 13:29 .. lrwxrwxrwx 1 mysql mysql 28 2010-08-30 13:28 blbl.frm -> /var/lib/mysql/test/blbl.frm lrwxrwxrwx 1 mysql mysql 28 2010-08-30 13:28 blbl.MYD -> /var/lib/mysql/test/blbl.MYD lrwxrwxrwx 1 mysql mysql 28 2010-08-30 13:28 blbl.MYI -> /var/lib/mysql/test/blbl.MYI -rw-rw---- 1 mysql mysql 65 2010-08-30 13:24 db.opt I really need those symlinks, is there a way to make them working like before ? ( old MySQL-server is fine ) Thanks,

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  • MySQL Cluster 7.3 Labs Release – Foreign Keys Are In!

    - by Mat Keep
    0 0 1 1097 6254 Homework 52 14 7337 14.0 Normal 0 false false false EN-US JA X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; font-family:Cambria; mso-ascii-font-family:Cambria; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Cambria; mso-hansi-theme-font:minor-latin; mso-ansi-language:EN-US;} Summary (aka TL/DR): Support for Foreign Key constraints has been one of the most requested feature enhancements for MySQL Cluster. We are therefore extremely excited to announce that Foreign Keys are part of the first Labs Release of MySQL Cluster 7.3 – available for download, evaluation and feedback now! (Select the mysql-cluster-7.3-labs-June-2012 build) In this blog, I will attempt to discuss the design rationale, implementation, configuration and steps to get started in evaluating the first MySQL Cluster 7.3 Labs Release. Pace of Innovation It was only a couple of months ago that we announced the General Availability (GA) of MySQL Cluster 7.2, delivering 1 billion Queries per Minute, with 70x higher cross-shard JOIN performance, Memcached NoSQL key-value API and cross-data center replication.  This release has been a huge hit, with downloads and deployments quickly reaching record levels. The announcement of the first MySQL Cluster 7.3 Early Access lab release at today's MySQL Innovation Day event demonstrates the continued pace in Cluster development, and provides an opportunity for the community to evaluate and feedback on new features they want to see. What’s the Plan for MySQL Cluster 7.3? Well, Foreign Keys, as you may have gathered by now (!), and this is the focus of this first Labs Release. As with MySQL Cluster 7.2, we plan to publish a series of preview releases for 7.3 that will incrementally add new candidate features for a final GA release (subject to usual safe harbor statement below*), including: - New NoSQL APIs; - Features to automate the configuration and provisioning of multi-node clusters, on premise or in the cloud; - Performance and scalability enhancements; - Taking advantage of features in the latest MySQL 5.x Server GA. Design Rationale MySQL Cluster is designed as a “Not-Only-SQL” database. It combines attributes that enable users to blend the best of both relational and NoSQL technologies into solutions that deliver web scalability with 99.999% availability and real-time performance, including: Concurrent NoSQL and SQL access to the database; Auto-sharding with simple scale-out across commodity hardware; Multi-master replication with failover and recovery both within and across data centers; Shared-nothing architecture with no single point of failure; Online scaling and schema changes; ACID compliance and support for complex queries, across shards. Native support for Foreign Key constraints enables users to extend the benefits of MySQL Cluster into a broader range of use-cases, including: - Packaged applications in areas such as eCommerce and Web Content Management that prescribe databases with Foreign Key support. - In-house developments benefiting from Foreign Key constraints to simplify data models and eliminate the additional application logic needed to maintain data consistency and integrity between tables. Implementation The Foreign Key functionality is implemented directly within MySQL Cluster’s data nodes, allowing any client API accessing the cluster to benefit from them – whether using SQL or one of the NoSQL interfaces (Memcached, C++, Java, JPA or HTTP/REST.) The core referential actions defined in the SQL:2003 standard are implemented: CASCADE RESTRICT NO ACTION SET NULL In addition, the MySQL Cluster implementation supports the online adding and dropping of Foreign Keys, ensuring the Cluster continues to serve both read and write requests during the operation. An important difference to note with the Foreign Key implementation in InnoDB is that MySQL Cluster does not support the updating of Primary Keys from within the Data Nodes themselves - instead the UPDATE is emulated with a DELETE followed by an INSERT operation. Therefore an UPDATE operation will return an error if the parent reference is using a Primary Key, unless using CASCADE action, in which case the delete operation will result in the corresponding rows in the child table being deleted. The Engineering team plans to change this behavior in a subsequent preview release. Also note that when using InnoDB "NO ACTION" is identical to "RESTRICT". In the case of MySQL Cluster “NO ACTION” means “deferred check”, i.e. the constraint is checked before commit, allowing user-defined triggers to automatically make changes in order to satisfy the Foreign Key constraints. Configuration There is nothing special you have to do here – Foreign Key constraint checking is enabled by default. If you intend to migrate existing tables from another database or storage engine, for example from InnoDB, there are a couple of best practices to observe: 1. Analyze the structure of the Foreign Key graph and run the ALTER TABLE ENGINE=NDB in the correct sequence to ensure constraints are enforced 2. Alternatively drop the Foreign Key constraints prior to the import process and then recreate when complete. Getting Started Read this blog for a demonstration of using Foreign Keys with MySQL Cluster.  You can download MySQL Cluster 7.3 Labs Release with Foreign Keys today - (select the mysql-cluster-7.3-labs-June-2012 build) If you are new to MySQL Cluster, the Getting Started guide will walk you through installing an evaluation cluster on a singe host (these guides reflect MySQL Cluster 7.2, but apply equally well to 7.3) Post any questions to the MySQL Cluster forum where our Engineering team will attempt to assist you. Post any bugs you find to the MySQL bug tracking system (select MySQL Cluster from the Category drop-down menu) And if you have any feedback, please post them to the Comments section of this blog. Summary MySQL Cluster 7.2 is the GA, production-ready release of MySQL Cluster. This first Labs Release of MySQL Cluster 7.3 gives you the opportunity to preview and evaluate future developments in the MySQL Cluster database, and we are very excited to be able to share that with you. Let us know how you get along with MySQL Cluster 7.3, and other features that you want to see in future releases. * Safe Harbor Statement This information is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products remains at the sole discretion of Oracle.

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  • How to log error queries in mysql?

    - by user271768
    I know that there is general_log that logs all queries, but I want to find out which query has an error, and get the error message. I have tried running an error query on purpose, but it logs as a normal query and doesn't report it with error. Any ideas?

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  • mySQL: Select WHERE causes error - why?

    - by Industrial
    Hi everybody, I have this query: SELECT `manufacturers`.*, `languages`.*, COUNT(`products`.`id`) AS productcount FROM (`manufacturers`) WHERE manufacturers.flushed = 0 JOIN `languages` ON `manufacturers`.`lang` = `languages`.`id` LEFT OUTER JOIN `products` ON `products`.`manuf` = `manufacturers`.`mid` GROUP BY manufacturers.id ORDER BY `languages`.`id` asc, `manufacturers`.`mid` asc; Without the WHERE row, everything works great, but with it, I get a Error 1064 (Syntax error) thrown in my face. I guess that it has something to do with the actual placement of the WHERE row in the query, so I tried to move it around, but without any luck. What can I do?

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  • MySQL Access denied error

    - by dancingbush
    I am trying to install mySQL on a Mac OS 10.8 and set up a user account. NOTE I am a abs beginner when it comes to using the command line in Terminal window. I used these instructions to install: http://www.macminivault.com/mysql-mountain-lion/ I set my own password for all users here: GRANT ALL ON *.* TO 'root'@'localhost' IDENTIFIED BY 'mypass' WITH GRANT OPTION; quit Every time i try to execute mySQL as a root user on the command line i get this: Ciarans-MacBook-Pro:~ callanmooneys$ mysql -u root ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) I read around on the net and tried various things including tried this to change password: mysqladmin -u root -pyourcurrentmysqlrootpassword password yournewmysqlrootpassword, it returns -> -> USE mysql -> If i simply type 'mysql' and launch the mySQL monitor then try to crete a user account: mysql> USE mysql ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'mysql' mysql> Also tried answers on forum: access is denied for user 'root'@localhost mysql error 1045 returned '[email protected] command not found And MySQL - ERROR 1045 - Access denied: Ciarans-MacBook-Pro:~ callanmooneys$ mysqld_safe --skip-grant-tables 131105 21:44:41 mysqld_safe Logging to '/usr/local/mysql/data/Ciarans-MacBook-Pro.local.err'. 131105 21:44:41 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data /usr/local/mysql/bin/mysqld_safe: line 129: /usr/local/mysql/data/Ciarans-MacBook-Pro.local.err: Permission denied /usr/local/mysql/bin/mysqld_safe: line 166: /usr/local/mysql/data/Ciarans-MacBook-Pro.local.err: Permission denied 131105 21:44:41 mysqld_safe mysqld from pid file /usr/local/mysql/data/Ciarans-MacBook-Pro.local.pid ended /usr/local/mysql/bin/mysqld_safe: line 129: /usr/local/mysql/data/Ciarans-MacBook-Pro.local.err: Permission denied Ciarans-MacBook-Pro:~ callanmooneys$ mysql -u root ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) Ciarans-MacBook-Pro:~ callanmooneys$ Feedback appreciated.

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  • How to add 1 to the value of a column of an existing row in mysql

    - by mithun1538
    Hello everyone, I have a table called pollData. It will always contain only 1 row. It has columns option1, option2, option3, option4, option5 each of type int. In the beginning, these columns have 0 as their value. How do I add 1 to any column, say option2? I mean do i retrieve the value of that column first, perform addition, and store back, or is there any auto increment function?

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  • MySQL & PHP Parameter 1 as Resource

    - by Nik
    Alright, PHP is throwing this error at me (in the log) when I run the code mentioned below: Error mysql_num_rows() expects parameter 1 to be resource, string given in (place) on line 10 Line 9-11 $queryFP = ("SELECT * FROM db"); $countFP = mysql_num_rows($queryFP); $aID = rand(1, $countFP); I think it has something to do with the $queryFP's syntax, but I'm not completely sure how to fix it since $queryFP's syntax is the simplest query I've ever seen.

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  • MySQL INSERT with table alias

    - by Max Kielland
    Hello, I happen to have two columns having the same name as two SQL reserved words, Key and Value. When using the SELECT statement I can create a table alias and solve it that way. Now I'm trying to INSERT data and it seems like you can't create table alias in the INSERT statement. INSERT INTO attributeStrings ats (ats.ItemID,ats.Key,ats.Value) VALUES (3,'Categories','TechGUI') I get error at 'ats (ats.ItemID,ats.Key,ats.Value) VALUES (3,'Categories','TechGUI')' indicating that alias can't be created. Are there any ways to solve this without renaming the columns Key and Value?

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  • MySQL Replication Over SSH - Last_IO_Errno: 2003 - error connecting to master

    - by Dom
    I have MySQL MASTER/SLAVE replication working on two test boxes (Centos 6.4 / MySQL 5.5.32) over LAN. Securing the connection over ssh causes connection problems from the SLAVE machine: (Sample of show slave status \G Output) Last_IO_Errno: 2003 Last_IO_Error: error connecting to master '[email protected]:3305' - retry-time: 60 I have granted the replication user the relevant privileges on the master server with both 127.0.0.1 and the network IP. I have forwarded the port from slave to master over SSH ssh -f 192.168.0.128 -L 3305:192.168.0.128:3306 -N I can connect to master MySQL from slave with mysql -urep -ppassword -h127.0.0.1 -P3305 The master server setup would seem fine, as it works without a tunnel, and the tunnel seems fine, as I can connect to MySQL between the two. Change Master Statement: CHANGE MASTER TO MASTER_HOST='127.0.0.1', MASTER_PORT=3305, MASTER_USER='rep', MASTER_PASSWORD='password'; Note: I know there are reasons to use SSL, instead of SSH, but I have reasons why SSH is a better choice for my setup.

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  • restoring myisam mysql db on a different machine

    - by RainDoctor
    I have copied the web db directory(/var/lib/mysql/data/web/), when mysql is not running. I transferred this directory to another machine, where mysql is running. web db's stuff is myisam based. I am thinking about how to restore this on a different server. The strategy I have on my mind is the following. copy the data directory of web db to the new server. on new server, 'create database web', which creates a directory in /var/lib/mysql/data copy all files from the step to the new directory created in 2. bounce mysql My question: how to deal with information_schema for this new db?

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  • MySQL 5.1.49 freezing every two days

    - by maximus
    Hi all, our mysql system is "freezing" every two days. By "freezing" i mean the following: it doesn't respond to ping we can't login with SSH we don't get any answer from MySQL there is no entry in the error logs! neither from linux neither from MySQL. we have already changed to a completely new hardware, we have the same problem, so it's definitely not a hardware problem. we do not have any other software installed except a firewall (iptables rule) we can restart the server from another server using rsyslog (www.rsyslog.com)(software reset) Could someone help me, by giving me some pointers what could i do to figure out the problem? I have included every detail about our settings. Thank you in advance for your help. Max. Our system parameters and settings: System-Memory: 12GB Processor: Intel 7-920 Quadcore Operating system: Debian 5 (lenny) 64bit MySQL 5.1.49 Databases: (a) a small phpbb forum (b) a 6GB database 3 tables with about 15 million rows my.cnf # # The MySQL database server configuration file. # # You can copy this to one of: # - "/etc/mysql/my.cnf" to set global options, # - "~/.my.cnf" to set user-specific options. # # One can use all long options that the program supports. # Run program with --help to get a list of available options and with # --print-defaults to see which it would actually understand and use. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html # This will be passed to all mysql clients # It has been reported that passwords should be enclosed with ticks/quotes # escpecially if they contain "#" chars... # Remember to edit /etc/mysql/debian.cnf when changing the socket location. [client] port = 3306 socket = /var/run/mysqld/mysqld.sock # Here is entries for some specific programs # The following values assume you have at least 32M ram # This was formally known as [safe_mysqld]. Both versions are currently parsed. [mysqld_safe] socket = /var/run/mysqld/mysqld.sock nice = 0 [mysqld] # # * Basic Settings # user = mysql pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock port = 3306 basedir = /usr datadir = /var/lib/mysql tmpdir = /tmp language = /usr/share/mysql/english skip-external-locking # # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = our-ip-address # # * Fine Tuning # key_buffer = 16M max_allowed_packet = 16M thread_stack = 256K thread_cache_size = 32 max_connections = 300 table_cache = 2048 #thread_concurrency = 4 # Used for InnoDB tables recommended to 50%-80% available memory innodb_buffer_pool_size = 6G # 20MB sometimes larger innodb_additional_mem_pool_size = 20M # 8M-16M is good for most situations innodb_log_buffer_size = 8M # Disable XA support because we do not use it innodb-support-xa = 0 # 1 is default wich is 100% secure but 2 offers better performance innodb_flush_log_at_trx_commit = 1 innodb_flush_method = O_DIRECT #innodb_thread_concurency = 8 # Recommended 64M - 512M depending on server size innodb_log_file_size = 512M # One file per table innodb_file_per_table # # * Query Cache Configuration # query_cache_limit = 1M query_cache_size = 16M #query_cache_type = 1 #query_cache_min_res_unit= 2K #join_buffer_size = 1M # # * Logging and Replication # # Both location gets rotated by the cronjob. # Be aware that this log type is a performance killer. # As of 5.1 you can enable the log at runtime! #general_log_file = /var/log/mysql/mysql.log #general_log = 1 # # Error logging goes to syslog. This is a Debian improvement :) # # Here you can see queries with especially long duration log_slow_queries = /var/log/mysql/mysql-slow.log long_query_time = 2 log-queries-not-using-indexes # # The following can be used as easy to replay backup logs or for replication. #server-id = 1 log_bin = /var/log/mysql/mysql-bin.log # WARNING: Using expire_logs_days without bin_log crashes the server! See README.Debian! expire_logs_days = 10 max_binlog_size = 100M #binlog_do_db = include_database_name #binlog_ignore_db = include_database_name # # InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/. # Read the manual for more InnoDB related options. There are many! # * InnoDB plugin # As of MySQL 5.1.38, the InnoDB plugin from Oracle is included in the MySQL source code. # It has many improvements and better performances than the built-in InnoDB storage engine. # Please read http://www.innodb.com/products/innodb_plugin/ for more information. # Uncommenting the two following lines to use the InnoDB plugin. ignore_builtin_innodb plugin-load=innodb=ha_innodb_plugin.so # # * Security Features # # Read the manual, too, if you want chroot! # chroot = /var/lib/mysql/ # # For generating SSL certificates I recommend the OpenSSL GUI "tinyca". # # ssl-ca=/etc/mysql/cacert.pem # ssl-cert=/etc/mysql/server-cert.pem # ssl-key=/etc/mysql/server-key.pem [mysqldump] quick quote-names max_allowed_packet = 16M [mysql] #no-auto-rehash # faster start of mysql but no tab completition [isamchk] key_buffer = 16M # # * NDB Cluster # # See /usr/share/doc/mysql-server-*/README.Debian for more information. # # The following configuration is read by the NDB Data Nodes (ndbd processes) # not from the NDB Management Nodes (ndb_mgmd processes). # # [MYSQL_CLUSTER] # ndb-connectstring=127.0.0.1 # # * IMPORTANT: Additional settings that can override those from this file! # !includedir /etc/mysql/conf.d/ UPDATE After installing sysstat and configuring it to collect data after every minute i have the following datas. I used sar to generate the following output: The log-file is too big so coudn't enter it here but uploaded to box.net. The link is http://www.box.net/shared/xc6rh7qqob SECOND UPDATE We started a ping command in the background, and that solved the problem. Now the server does work since more then a week. We still don't know what's the problem.

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