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• Mysql search design

  - by neil

  I'm designing a mysql database, and i'd like some input on an efficient way to store blog/article data for searching. Right now, I've made a separate column that stores the content to be searched - no duplicate words, no words shorter than four letters, and no words that are too common. So, essentially, it's a list of keywords from the original article. Also searched would be a list of tags, and the title field. I'm not quite sure how mysql indexes fulltext columns, so would storing the data like that be ineffective, or redundant somehow? A lot of the articles are on the same topic, so would the score be hurt by so many of the rows having similar keywords? Also, for this project, solutions like sphinx, lucene or google custom seach can't be used -- only php & mysql. Thanks!

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• How to know my username and password in mysql console

  - by msheshtawy

  i've installed mySQL .. i entered my password , but i can't remember they've asked me for a username .. is it admin or root ? i wanna add the username and password to RubyonRails database.yml i remember i found a command that tells me the username and password in the mysql console .. but can't find it again ! that's the part i wanna add in my database.yml development: adapter: mysql database: myprojectname_development username: unknown password: devrailspassword host: localhost Since i just started development i don't have a database yet, so there is no way of trial and error ( not that i know of )

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• Cannot connect to MySQL 4.1+ using old authentication

  - by B T

  I'm trying to connect to a mySQL database at http://bluesql.net, but when I try to connect, it gives this error: Connect Error (2000) mysqlnd cannot connect to MySQL 4.1+ using old authentication I've looked into this, and it has to do with some old password scheme used before MySQL 4.1. Newer versions have the option to use old passwords, which I've read may cause this problem. I'm running php 5.3, and connecting with mySQLi (new mysqli(...)). I'm hoping I can do something in the code to connect to the DB at bluesql.net - clearly I don't control how their database is set up. Downgrading php versions isn't an option. Anyone have any ideas?

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• MySQL Returns wrong values on SELECT statement

  - by Andrew K

  All, I'm wondering if this is a MySQL bug, but since I've seen others playing with larger numbers than this, I'm thinking I'm doing something wrong here. Here is my table structure for the table I'm querying: mysql describe ipspace6\G ************* 1. row ************* Field: id Type: decimal(39,0) unsigned Null: NO Key: Default: NULL Extra: ************* 2. row ************* Field: addr Type: decimal(39,0) unsigned Null: NO Key: PRI Default: 0 Extra: ************* 3. row ************* Field: netmask Type: decimal(39,0) unsigned Null: NO Key: Default: 0 Extra: ************* 4. row ************* Field: subnet Type: int(4) Null: NO Key: Default: NULL Extra: Now, I run a simple SELECT statement against the "id" column: mysql SELECT id FROM ipspace6 WHERE id='50552019118453823914642686339427860480'; +----------------------------------------+ | id | +----------------------------------------+ | 50552019118453823730175245602332344320 | | 50552019118453823730175245602332344320 | | 50552019118453823914642686339427860480 | | 50552019118453823914642686339427860480 | +----------------------------------------+ ...What the heck is going on here? Two of these results are valid, and two definitely are not. It's not like I'm doing some super-complex nested query or anything, this is simple stuff, and it's driving me insane. Help, anyone?

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• What would be my best MySQL Synchronization method?

  - by Kerry

  We're moving a social media service to be on separate data centers with global load balancing, as our other hosting provider's entire data center went down. Twice. This means that both websites need to be synchronized in some sense -- I'm less worried about the code of the pages, that's easy enough to sync, but they need to have the same database data. From my research on SO, it seems MySQL Replication is a good option, but the MySQL manual, for scaling out, says that its best when there are far more reads then there are writes/updates: http://dev.mysql.com/doc/refman/5.0/en/replication-solutions-scaleout.html In our case, it's about equal. We're getting around 200-300 thousand requests a day right now, and we can grow rapidly. Every request is both a read and write request. What would be the best method or tool to handle this?

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• MySQL does not work on localhost without Local Area Connection

  - by user985171

  I use WampServer(Apache, PHP, MySQL) and have no problems when some kind of network adapter(wireless or lan) is connected(i-e Local Area Connection has status connected) 'even if i am not connected to the internet'(for example when i am connected to the router but that is not connected to the internet). When there is no network connection, i get a php error like MySQL could not connect to 127.0.0.1 on port 3306. Interestingly, 'telnet 127.0.0.1 3306' says that it could not connect to the port, even when the server and MySQL are running fine(i-e when some kind of local area connection is connected). So i turned off all kinds of firewall(antivirus and windows) but still no difference in anything. And that is why this issue is quite puzzling. Things i have already tried(will update this list along the way):- -The skip-networking directive in my.ini.

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• Beginner's Question about accessing mysql using OOP

  - by user345690

  I am reading the PHP and mySQL web development book and so far been doing all the PHP and mysql using procedural. But then it talks about accessing mysql with objects. This works for me: //I define $db so can connect $query="select * FROM testing"; $result=mysqli_query($db,$query); while($row=mysqli_fetch_array($result)){ //echo the data } But when I try to do it with classes, it doesn't $query="select * FROM testing"; $result=$db->query($query); $row=$result->fetch_assoc(); Do I have to write my own class so it defines what query and fetch_assoc does? Or what?

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• Format MySQL code inside PHP string

  - by JohnA

  Is there any program IDE or not that can format MySQL code inside PHP string e.g. I use PHPStorm IDE and it cannot do it. It does that for PHP and MYSQL but not for MYSQL inside php string. I am ready to use new IDE because now i have to manually format hundreds of database requests that are one line and not readable. Only criteria for my choice is that ide can do that automatically. <?php ... $request1 = "select * from tbl_admin where admin_id= {$_SESSION['admin_id']} and active= 1 order By admin_id Asc"; ... ?> should become <?php ... $request1 = "SELECT * FROM tbl_admin WHERE admin_id = {$_SESSION['admin_id']} AND active = 1 ORDER BY admin_id ASC"; ... ?>

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• MySQL transaction conundrum

  - by David Faitelson

  I need to perform several inserts in a single atomic transaction. For example: start transaction; insert ... insert ... commit; However when MySQL encounters an error it aborts only the particular statement that caused the error. For example, if there is an error in the second insert statement the commit will still take place and the first insert statement will be recorded. Thus, when errors occur a MySQL transaction is not really a transaction. To overcome this problem I have used an error exit handler where I rollback the transaction. Now the transaction is silently aborted but I don't know what was the problem. So here is the conundrum for you: How can I both make MySQL abort a transaction when it encounters an error, and pass the error code on to the caller?

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• Read a large result set in chunks from mysql

  - by ripper234

  I am trying to read a huge result set from mysql. Reading them in a straight-forward manner didn't work, as mysql tries to return all results together, which times out. I found the following piece of code which tells mysql to read the results back one at a time: stmt = conn.createStatement(java.sql.ResultSet.TYPE_FORWARD_ONLY, java.sql.ResultSet.CONCUR_READ_ONLY); stmt.setFetchSize(Integer.MIN_VALUE); Can I read a chunk at a time instead of one by one? I've tried setting fetch size to a different value, but it doesn't work.

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• Encrypting MySQL Traffic In Scripts

  - by threepoints

  Hello, I need to be able to encrypt the MySQL traffic from a web server to a database server. I know how to set MySQL to use SSL based on the server and client settings in my.cnf however, this needs to be done using mysql_connect() in PHP. This may be a 2 part question. 1) Does mysql_connect() use the MySQL client settings that are set in my.cnf? If not... I have read that you can use MYSQL_CLIENT_SSL however, where is the SSL data obtained from? Does using MYSQL_CLIENT_SSL in the mysql_connect function automagically encrypt the traffic? Simply put, what is the best way to do this? Thanks!

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• Can I connect to a 64 bit mysql server from a 32 bit machine with 32 bit mysql client lib?

  - by chenqingzhi

  Can I connect to a 64 bit mysql server from a 32 bit machine with 32 bit mysql client lib? I mean the server is 64 bit version and running on an 64 bit machine and the client app is running on an 32 bit machine with the 32 bit mysql client lib. Is that OK? Or it will cause some problems? I don't have two machine so I can't do the test, can some tell me the answer? Thank you!

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• The case of the mysterious MySQL caching across restarts

  - by shanusmagnus

  I found a very slow MySQL query in my web app. The weird thing is that the query is only slow the first time it's executed, despite the fact that the query_cache is set to its default (query_cache_size 0) like so: mysql> show variables like 'query%'; +------------------------------+---------+ | Variable_name | Value | +------------------------------+---------+ | query_alloc_block_size | 8192 | | query_cache_limit | 1048576 | | query_cache_min_res_unit | 4096 | | query_cache_size | 0 | | query_cache_type | ON | | query_cache_wlock_invalidate | OFF | | query_prealloc_size | 8192 | +------------------------------+---------+ The even weirder thing is that this speedup persists even after the MySQL server has been stopped and restarted (I'm using OSX, and perform this restart using the system preferences pane.) The only way I can re-create the poor performance of the initial query is by rebooting the system. So my question is: how is this happening? Obviously some sort of caching at work, but where? And how does it persist across database restarts? This query is mediated through our web app, which comes via PHP/Apache, but there are no extra bells and whistles, and the curious caching also persists across Apache restarts. Help?

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• MySQL Access in Php to a database created in C-Panel

  - by Rhys Drury

  Basically, i'm having trouble connecting to a mysql database using a php web page. I created the database in C-panel using the wizard i'm connecting like this $db_host = "localhost"; //your host Database address $db_username = "xxxx"; //your account username $db_pass = "xxxxx"; //your account password $db_name = "xxxxx"; //your database name @mysql_connect("$db_host","$db_username","$db_pass") or die ("could not connect to mysql"); @mysql_select_db("$db_name") or die ("no database"); But all my page seems to do is trigger the " could not connect to mysql" my page does have wordpress installed at the minute but I'm planning to get rid of it as I'm creating my site myself. I'm just baffled why it can't connect, because in Phpmyadmin ( a feature on C-panel) it says the database is in localhost.

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• How To Securly Store Data In MySQL Using AES_ENCRYPT

  - by Justin

  We are storing sensitive data in MySQL, and I want to use AES_ENCRYPT(data, 'my-secret-key-here') which works great. My biggest question is how do I secure the key? Previously I just wast storing the key in a web PHP file, so something like: define("ENCRYPTION_KEY", 'my-secret-key-here'); This really doesn't work though, as our MySQL server and web server are the same physical machine, so if somebody gains access to the server, they can get both the encrypted data stored in MySQL and the key. Any ideas? I am thinking I need to move the key to a separate server, and read it in remotely. Or, what about generating the encryption key dynamically for each piece of data. For example taking the customer_id and running md5 on it, and then using that as the key.

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• MySQL Database || Tables Issue

  - by user1780103

  I'm trying to write up a script where the user is able to purchase an amount of points for dollars. I want the transaction to be inserted into MySQL. I keep facing a: "Column count doesn't match value count at row 1" error. And I have no idea what I'm doing wrong. I have written up this: mysql_query("INSERT INTO paypal_donations VALUES (NULL, ".$account_id.", ".$char_id.", ".$price.", ".$dp.", NOW(), NOW(), 'Started', 0, 0, '', '');") or die(mysql_error()); But I don't know what to execute in MySQL, since I've never worked with it before. Could anyone write up a quick script that I can insert into MySQL for it to work.

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• PHP MYSQL Insert Data in Arabic Language

  - by h_a86

  I am trying to insert some Arabic Language data into MySQL using PHP and an HTML form. When I insert the data in to MYSQL table, the table field represents data as مرحبا العالم. But when I access the same data with PHP and show it in my webpage, it shows the correct data. I am using: http-equiv="Content-Type" content="text/html; charset=utf-8" meta tag in my web page to show Arabic data. My question is why my data looks like this: مرحبا العالم in MySQL table, and how should I correct it.

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• Inserting empty string into auto_increment column in MySQL 5

  - by QmunkE

  Hi, I've inherited a project which we are trying to migrate to MySQL 5 from MySQL 4.0(!) and from myISAM to InnoDB. Queries are now falling down because they are being constructed using an ADODB connection's -qstr() on all parameters, including ints. Where no value is provided I end up with: INSERT INTO tablename VALUES ('', 'stuff'...) where the first column is an auto_increment. This causes an error (fair enough since '' isn't an int). Is there a switch in MySQL to make it behave as it used to (I assume it just silently converted to 0?) Thanks.

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• Timezone settings in MySQL - Using NOW()?

  - by matt74tm

  SOmewhat related to Doing calculations in MySQL vs PHP Right now, our database assumes that the system time is in UTC and uses that to calculate NOW(). PHP explicitly sets the timezone as UTC (so its impervious to server time zone shifts). An accidental shift of timezones on the server messed this relationship up at the database level and i'm now trying to figure out the ideal congiguration: configure Mysql to be in UTC, but also from the perspective that: our application may be on someone else's server where they might have a different TZ (so i cant set the timezone at the mysql/server level). How do i configure it at the specific database level?

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• MySQL for Excel new features (1.2.0): Save and restore Edit sessions

  - by Javier Rivera

  Today we are going to talk about another new feature included in the latest MySQL for Excel release to date (1.2.0) which can be Installed directly from our MySQL Installer downloads page.Since the first release you were allowed to open a session to directly edit data from a MySQL table at Excel on a worksheet and see those changes reflected immediately on the database. You were also capable of opening multiple sessions to work with different tables at the same time (when they belong to the same schema). The problem was that if for any reason you were forced to close Excel or the Workbook you were working on, you had no way to save the state of those open sessions and to continue where you left off you needed to reopen them one by one. Well, that's no longer a problem since we are now introducing a new feature to save and restore active Edit sessions. All you need to do is in click the options button from the main MySQL for Excel panel:  And make sure the Edit Session Options (highlighted in yellow) are set correctly, specially that Restore saved Edit sessions is checked: Then just begin an Edit session like you would normally do, select the connection and schema on the main panel and then select table you want to edit data from and click over Edit MySQL Data. and just import the MySQL data into Excel:You can edit data like you always did with the previous version. To test the save and restore saved sessions functionality, first we need to save the workbook while at least one Edit session is opened and close the file.Then reopen the workbook. Depending on your version of Excel is where the next steps are going to differ:Excel 2013 extra step (first): In Excel 2013 you first need to open the workbook with saved edit sessions, then click the MySQL for Excel Icon on the the Data menu (notice how in this version, every time you open or create a new file the MySQL for Excel panel is closed in the new window). Please note that if you work on Excel 2013 with several workbooks with open edit sessions each at the same time, you'll need to repeat this step each time you open one of them: Following steps:  In Excel 2010 or previous, you just need to make sure the MySQL for Excel panel is already open at this point, if its not, please do the previous step specified above (Excel 2013 extra step). For Excel 2010 or older versions you will only need to do this previous step once.  When saved sessions are detected, you will be prompted what to do with those sessions, you can click Restore to continue working where you left off, click Discard to delete the saved sessions (All edit session information for this file will be deleted from your computer, so you will no longer be prompted the next time you open this same file) or click Nothing to continue without opening saved sessions (This will keep the saved edit sessions intact, to be prompted again about them the next time you open this workbook): And there you have it, now you will be able to save your Edit sessions, close your workbook or turn off your computer and you will still be able to reopen them in the future, to continue working right where you were. Today we talked about how you can save your active Edit sessions and restore them later, this is another feature included in the latest MySQL for Excel release (1.2.0). Please remember you can try this product and many others for free downloading the installer directly from our MySQL Installer downloads page.Happy editing !

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• Setting up a LAMP VM server for Development and Testing?

  - by TdotThomas

  Info: I would like to set up a VM server on my local computer which will serve pages in the exact same way as my current hosting (but only to me on my local computer). I currently pay a big web hosting company to host my website & web store and they are doing a great job, but I would like to be able to work on my Web site and its corresponding MySQL DB, HTML, and PHP code without being at risk of messing something completely up on the live servers. My current plan of action: Set up a VM webserver with Debian, MySQL, PHP, Apache. Copy web store (PHP/HTML) code to VM server. Copy my current MySQL databases from my hosting provider and install on VM server. Modify and test new features on VM server. Upload MySQL DB and HTML/PHP code back to web host's server where it should work as before but with new modifications. Questions: Now I'm pretty sure I have steps one and two down correctly but I can't for the life of me figure out how to proceed next, so here are my questions. I have my /etc/host file set up so www.MySite.test redirects to the IP address of the local VM webserver. Once I import my PHP/HTML files and MySQL file whats the best way to navigate around the fact that all of my files and DBs will reference www.MySite.com. I can export my MySQL dbs but do I also have to export my MySQL users and passwords to access those db or are those coded into my html/php code?

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• Can I replicate data between mySQL and SQL Server/SQL Azure?

  - by Ernest Mueller

  I have a replicated mySQL setup running happily on Amazon AWS, making user data available locally in various regions. Now I'm faced with an app that needs to go up on Microsoft Azure and I need to replicate the data over to there as well. So that's annoying. I am faced with several options: Replicate from mySQL to SQL Azure/SQL Server seems like it would be lovely - is this possible? I'd consider using a third party tool and paying $$ if I had to. We're not using anything complicated in the db feature set, it's just data in tables. Get mySQL working on Microsoft Azure - which seems really dicey at best. All the HOWTOs I can find say "this is possible but you really shouldn't try this for production apps." Go non-realtime and do syncs from mySQL to SQL Azure, which may be somewhat expensive and slower. Rip out all my mySQL on Amazon and use SQL Server there, which would make Baby Jesus cry. Has anyone gotten mySQL to SQL Azure/SQL Server replication or syncing working? Or have any other approaches (a NoSQL solution that replicates and might meet our but-we-need-to-join-some-tables needs that can easily be run on Amazon and Azure)?

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• Can't install mysql 5.1 on a windows machine because the last install left artifacts.

  - by Zombies

  After uninstalling mysql 5.1 (64 bit version) I cannot install the win32 version! Apparently the devs felt it neccasery to leave helpful artifacts behind? I have rebooted my machine but no effect.. Running this: C:\Users\User1>net start mysql The MySQL service is starting. The MySQL service could not be started. A system error has occurred. System error 1067 has occurred. The process terminated unexpectedly. And ran this: C:\Program Files (x86)\MySQL\MySQL Server 5.1\bin>mysqld --console 100213 10:52:58 [Note] Plugin 'FEDERATED' is disabled. InnoDB: Error: log file .\ib_logfile0 is of different size 0 10485760 bytes InnoDB: than specified in the .cnf file 0 25165824 bytes! 100213 10:52:59 [ERROR] Plugin 'InnoDB' init function returned error. 100213 10:52:59 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 100213 10:52:59 [ERROR] Unknown/unsupported table type: INNODB 100213 10:52:59 [ERROR] Aborting 100213 10:52:59 [Note] mysqld: Shutdown complete Update: For some reason it looks like it is installing the 32bit DB into the old 64bit directoy.... will look into this... (the bin directory is going into the 32 bit program files directory).

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• Which AMI to to use for Java/Tomcat/MySQL in Amazon EC2?

  - by Justin

  I originally posted this on stackoverflow.com and it was suggested serverfault.com might be a better place to ask this question. So here goes: I'm trying to determine which Amazon Machine Image (AMI) to use as my Virtual Server in Amazon's EC2. For now, I'll need to choose an AMI that complies with the AWS Free Usage Tier. I want to deploy a Java app that I've been developing using Eclipse on Windows XP, Tomcat 7 and MySQL 5.5. I'm aware that I can choose the Basic 32-bit Amazon Linux AMI. Then I'd manually install Tomcat and MySQL (does MySQL get installed on the image or separately on an Elastic Block Store (EBS)?). Here's the rub, I'm a bit of a Linux noob. I can start Tomcat and tail the logs and such on Linux but I'm not familiar with the install process for Tomcat and MySQL on Linux and commands like sudo and chmod. I'm happy to get more hands on with Linux but I'm short on time right now. Are there AMI's that already have Tomcat and MySQL bundled? The Request Instance Wizard shows 805 Community AMI's that are Free Tier Eligible. 51 of the Free Tier Eligible AMI's have "Tomcat" in their name. I'm willing to consider using Elastic Beanstalk but my research thus far hasn't found any discussion of using MySQL with Beanstalk. The discussions all seem to use Amazon's SimpleDB. Any advice is greatly appreciated.

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• What's the mysql-5.5 compilation configuration arguments on Ubuntu 10.04?

  - by photon

  I want to install mysql 5.5 on my Ubuntu10.04 desktop system. But I'm not sure what arguments I should use after the cmake command. Though I've seen these articles: https://wikis.oracle.com/display/mysql/Cmake Building mysql-5.5.19 from source on ubuntu 11.10 with the static flag Compile MySQL 5.5.15 from source using autorun.sh and cmake, unable to start MySQL after Would anyone like to share the mysql-5.5 configuration arguments of compilation on Ubuntu 10.04? $cmake # what arguments to enter for this command update: cmake . -DBUILD_CONFIG=mysql_release -DCMAKE_INSTALL_PREFIX=/path/to/mysql_installation_dir -DWITH_SSL=no the official web site says it need to use cmake to compile the source package, but according to a teck blog, it doesn't need to compile the source, so which one is correct? When I use Cmake, I also had following error message: $ sudo cmake . -DBUILD_CONFIG=mysql_release -DCMAKE_INSTALL_PREFIX=/usr/local/mysql_community_5.5 -- The CXX compiler identification is unknown CMake Error: your CXX compiler: "CMAKE_CXX_COMPILER-NOTFOUND" was not found. Please set CMAKE_CXX_COMPILER to a valid compiler path or name. CMake Error at cmake/build_configurations/mysql_release.cmake:126 (MESSAGE): Clarification: I'm not clever and I'm a slow-thinking guy. And I cannot find a clever guy around me to give me some useful help. So I come here and hope someone is kind and generous enough to take the time to post the details.

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