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• How to quickly re-sort a MySQL table by one of the columns?

  - by Vacilando

  What are the most efficient SQL queries that would take an existing MySQL table and re-sort it by one of the columns? Not a selection, but the whole table should be sorted by one column. Somehow using a temporary table, I guess, but what's the best way?

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• Which is faster for small web projects - MySQL or Oracle?

  - by Dreshna

  Hi Which is generally faster for small web projects - MySQL or Oracle? Please provide some proof (benchmarks or any other) of your opinion.

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• How do I escape reserved words used as column names? MySQL/Create Table

  - by acidzombie24

  I am generating tables from classes in .NET and one problem is a class may have a field name key which is a reserved MySQL keyword. How do I escape it in a create table statement? (Note: The other problem below is text must be a fixed size to be indexed/unique) create table if not exists misc_info ( id INTEGER PRIMARY KEY AUTO_INCREMENT NOT NULL, key TEXT UNIQUE NOT NULL, value TEXT NOT NULL)ENGINE=INNODB;

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• The least amount of code possible for this MySQL query?

  - by ddan

  I have a MySQL query that: gets data from three tables linked by unique id's. counts the number of games played in each category, from each user and counts the number of games each user has played that fall under the "fps" category It seems to me that this code could be a lot smaller. How would I go about making this query smaller. http://sqlfiddle.com/#!2/6d211/1 Any help is appreciated even if you just give me links to check out.

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• mysql: how do i get a list of databases available?

  - by every_answer_gets_a_point

  i am using wampserver i opened the mysql prompt i would like to know which databases i am able to connect to/view. how do i do this?

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• Can i insert an image in a MYSQL DB table?

  - by Shinigami

  is there a way to insert pics(not url,the pic)into a MYSQL table made with phpmyadmin? and if there is when i want to get that picture and insert it in the page , what should i do? :)

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• mySQL: How many rows in a table before performance is affected?

  - by Industrial

  Hi everybody, Is there a "known limit" for columns & rows in a mySQL table that when passed, it can be safe to say that performance is severely affected? I've think that I had heard that there is a "golden number" that you really dont want to exceed in either columns or rows in a table. - Or is it all about the size of the index and available RAM + CPU on the server? Thanks!

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• How can i found out if there is transaction open in MySQL?

  - by praksant

  How can i find out if there is transaction open in mySQL? I need to start new one if there is no transaction open, but i don't want to start new one if there is one running, because that would commit that running transaction.

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• How do i escape reserve names in a column? MySQL/Create Table

  - by acidzombie24

  I am generating tables from classes in .NET and one problem is a class may have a field name key which is a reserved mysql keyword. How do i escape it in a create table statement? (Note: The other problem below is text must be a fixed size to be indexed/unique) create table if not exists misc_info ( id INTEGER PRIMARY KEY AUTO_INCREMENT NOT NULL, key TEXT UNIQUE NOT NULL, value TEXT NOT NULL)ENGINE=INNODB;

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• ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using Password:YES) [duplicate]

  - by sivashanmugam

  This question already has an answer here: MySQL command appends '@localhost' to username 1 answer Mysql - Access denied for user 'root'@'x.x.x.x' [duplicate] 7 answers root@test-2:/usr/local# mysql -u root -H 192.168.x.xxx -p Enter password: ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

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• Possible to View Value of Script Variable in MySQL Query Browser's Script Window?

  - by Eric J.

  When stepping through a script in MySQL Query Browser's script window, is there any way to view the value of a variable I have just assigned? Specifically I do an update on one line, and then: SET @Num=row_count(); While debugging the script, I would like to be able to know the value of @Num

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• How to upload 10 Gb of data to MySQL programmatically without crashing like on PHPMyAdmin?

  - by asksuperuser

  I'm very surprised that it seems impossible to upload more than a few megabytes of data to mysql database through PHPMyAdmin whereas I can upload a msaccess table easily up to 2 Gigabytes. So is there any script in php or anything that can allow to do so unlike phpmyadmin ?

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• Administrators: People interaction and Working hours?

  - by sanksjaya

  Do admins get to meet a lot of new people on a daily basis at work? And what kind of people domain do they interact with? Secondly, I've had this myth for a long time that unlike programmers, Network/System/Security Admins get locked-up in a den and juiced up late nights and early mornings. Most of the time they had to slip out of work without being noticed. How true and often does this happen for you? I understand there is no specific answer to this question as it depends on the type of working organization. But just looking out for answers from your experience. Thanks :) Clarification: I've had the question posted on to stackoverflow and they closed it. So I posted it here.

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• Given a Date "03/13/2010", using that in a MYSQL Where Clause?

  - by nobosh

  I would like to pass a MYSQL query via Coldfusion the following date: 03/13/2010 So the query filters against it like so: SELECT * FROM myTable WHERE dateAdded before or on 03/13/2010 I'd also like to be able to take 2 dates as ranges, from: 01/11/2000, to: 03/13/2010 SELECT * FROMT myTable WHERE dateAdded is ON or Between 01/11/2000 through 03/13/2010 thanks

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• Java / MySQL - How to access connection from another class?

  - by Alex

  I'm just getting my head around java (and OOP for that matter), the only thing I am familiar with is MySQL. I need to keep the DB connection open throughout the duration of the application, as well as a server socket. I'm not even sure if they both need separate classes, but here's what I have so far: http://pastebin.com/qzMFFTrY (it wouldn't all go in a code tag) The variable I need is con for line 86.

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• Decrypting an AES encryted column in mysql and adobe flex/flash builder?

  - by user345593

  How do i decrypt an aes encryted column when using flash/flex to display the table data? adobe flex connected using php connection class to mysql for php, we would use aes_decrypt() however i am not sure how i can get flex to do this.

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• can we build ASP.NET MVC based on MYSQL database?

  - by sam

  Hi Guys, Can we build ASP.NET MVC based on MYSQL database? if yes, is there any article availabe? thanks

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• How do I do this query in MysQL? (datetime)

  - by alex

  Suppose I have a datetime column in MySQL. How do I select all that have a datetime within 2500 seconds of the current datetime? SELECT ALL where current_datetime - that_datetime < 2500 ...

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• MySql: make this query faster… is there a way ? PART TWO

  - by robert

  This is part two of the question: http://stackoverflow.com/questions/2913639/mysql-make-this-query-faster-theres-a-way this query still run slowly: SELECT b.id, b.name, c.name FROM bookcorr as a JOIN books as b on b.id = a.books_id = JOIN Library as c on c.id = a.library_id WHERE a.category_id = '2521' AND a.library_id = '4983' ORDER BY b.name ASC LIMIT 0,15 Any suggest ?

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• How should I structure my settings table with mysql?

  - by incrediman

  I want to use MySQL to store a bunch of admin settings - what's the best way to structure the table? Like this? Setting _|_ Value setting1 | a setting2 | b setting3 | c setting4 | d setting5 | e Or like this? |--------|_setting1_|_setting2_|_setting3_|_setting4_|_setting5_| Settings | a | b | c | d | e | Or maybe some other way?

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• Find the table(column) that a FK links to? MySql

  - by acidzombie24

  I am ok with mysql. when i use desc tablename i can see columns with MUL meaning it is a foreign key. Now my question is, how do i find out exactly what table and column that column is pointing to.

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• What data type to use in MySQL to store images?

  - by rajson

  Hi friends, I need to store image and resume of user in the data base. I am using mysql data base and php5. I need to know which data types I should use. And also how do I set a limit (maximum size) for uploaded data.

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• How do you query a MySQL table columns highest entry and store it in a variable.

  - by user315819

  How do you query a MySQL table columns highest entry and store it in a variable. Here is what I have but it is not working. $query = "SELECT MAX(date) FROM Records WHERE ips='$currentip'"; $result = mysql_query($query) or die(mysql_error()); echo $result;

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• What's the best way to store sensative data in MySQL?

  - by embedded

  I'm managing the MySQL database from PHP scripts. the communication between server and client is secured via SSL. I store user account data which is sensitive. Is there a way to encrypt this data when entered into the DB? What is the best way to protect this sensitive data? Thanks

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• Upgrading from MySQL 4.1 to 5.0 - What kind of performance changes (good or bad) can we expect?

  - by user367579

  Currently have approximately 2000 simultaneouse connections. We average approximately 425 reads and writes per second. We have a read to write ration of 3:1. All of our tables are myisam. Can we expect better or worse performance when we go from mysql 4.1.22 to 5.0?

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