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• Arq - Backup Raw MySQL Database Files

  - by swt83

  I started using Arq to create backups of my files and upload them to S3. I'm wondering if it's possible to copy raw MySQL database files and upload them as well. If so, where would I find those files?

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• mysql custom sorting first alpha then numeric using case when

  - by Nizzy

  How can you sort a query using ORDER BY CASE WHEN REGEXP? or other alternatives? I don't want to use UNION. Thank you mysql> SELECT `floor_id`, `floor_number` FROM `floors`; +----------+--------------+ | floor_id | floor_number | +----------+--------------+ | 1 | 4 | | 2 | 7 | | 3 | G | | 4 | 19 | | 5 | B | | 6 | 3 | | 7 | A | +----------+--------------+ Expected result: +----------+--------------+ | floor_id | floor_number | +----------+--------------+ | 7 | A | | 5 | B | | 3 | G | | 6 | 3 | | 1 | 4 | | 2 | 7 | | 4 | 19 | +----------+--------------+

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• please help me construct this MYSQL Query (date / time)

  - by sebb

  Hi there i would like to construct a query that fetches results that occurred between NOW and 15 minutes ago, im getting a mysql error when I try the following , can you help me? thanks SELECT * WHERE user_id = '000' AND date_time < now( ) AND date_time > DATE_SUB( now( ) , INTERVAL 15 MINUTE)

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• synchronization of postgres and mysql database server?

  - by shahjapan

  whats the best way to synchronize few tables of mysql server with postgreSQL server, currently people are executing scripts, which takes much time, is there any fast solution available from which we can map the tables and columns to synchronize the db server.

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• How to search multiple columns in MySQL?

  - by George

  I'm trying to make a search feature that will search multiple columns to find a keyword based match. This query: SELECT title FROM pages LIKE %$query%; works only for searching one column, I noticed separating column names with commas results in an error. So is it possible to search multiple columns in mysql?

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• MySQL commercial license cost India [closed]

  - by Vish

  Gurus, Wanted to find out the MySQL commercial license cost in India. What does it cost to get a license for upto 10 users. In US, I guess its 499$. Please let me know as this is urgently required. Thanks Jad.

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• Stop mysql query if it too long

  - by shurik2533

  How do I automatically interrupting long queries in the mysql, if it possible? I'm understand, that I need optimize queries instead of. But now I have access on database server only.

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• mysql error #1452 appearing when trying to add a constraint

  - by user1701484

  I am trying to alter a table so That I can add a foreign key constraint in mysql database: ALTER TABLE `Question` ADD CONSTRAINT `FK_question` FOREIGN KEY (`QuestionId`) REFERENCES `Image_Question` (`QuestionId`) ON DELETE CASCADE ; Problem is that it is giving me this error: 1452 - Cannot add or update a child row: a foreign key constraint fails (mobile_app. '#sql-4517_15241', CONSTRAINT FK_question FOREIGN KEY (QuestionId) REFERENCES Image_Question (QuestionId) ON DELETE CASCADE) What does this error actually mean and what are the possible solutions I might have to undertake in order to fix this?

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• Difference of two series in MySQL

  - by Brian

  I have a table with the following fields in MySQL: date, Value, Type. Type can be either exports or imports. I want a query that returns the trade deficit (exports-imports) for each month. Is this possible with a single query?

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• MySQL create view from concat value

  - by cnotethegr8

  Lets say I have a table as follows, +----+-------------+ | id | value | +----+-------------+ | 1 | aa,bb,cc,dd | | 2 | ee,ff,gg,hh | +----+-------------+ I want to be able to search this table to see if id = 1 AND value = 'cc'. Im assuming a good way of doing this is to grab the id = 1 row and split its values into separate rows in a new view. Something like, +-----+ | val | +-----+ | aa | | bb | | cc | | dd | +-----+ I would like to do all of this in MySQL. How can i do this, and is there possibly a better way to do it?

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• MYSQL: Pull Only Words with Minimum Character length

  - by elmaso

  Hi, how can I pull only words with maximum 50 Characters from MYSQL? $query = "SELECT * FROM example ORDER BY ID DESC LIMIT 200";

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• python popen and mysql import

  - by khelll

  I'm doing the following: from subprocess import PIPE from subprocess import Popen file = 'dump.sql.gz' p1 = Popen(["gzip", "-cd" ,file], stdout=PIPE) print "Importing temporary file %s" % file p2 = Popen(["mysql","--default-character-set=utf8", "--user=root" , "--password=something", "--host=localhost", "--port=3306" , 'my_db'],stdin=p1.stdout, stdout=PIPE,stderr=PIPE) err = p1.communicate()[1] if err: print err err = p2.communicate()[1] if err: print err But the db is not being populated. No errors are shown, also I have checked p1.stdout and it has the file contents. Any ideas?

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• Get Template::Plugin::Date to accept MySQL dates as well as datetimes

  - by aidan

  I'm using the date plugin for Template::Toolkit (Template::Plugin::Date), it works well with datetimes (yyyy-mm-dd hh:mm:ss) pulled straight out of MySQL, but it will not work with dates (yyyy-mm-dd). What's the simplest way to get date.format to accept dates (without modifying the sql query)? Thanks.

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• How to display MySQL Select statement results in PHP

  - by Vafello

  I have the following code and it should return just one value (id) from mysql table. The following code doesnt work. How can I output it without creating arrays and all this stuff, just a simple output of one value. $query = "SELECT id FROM users_entity WHERE username = 'Admin' "; $result = map_query($query); echo $result;

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• MySql Join using 4 tables

  - by Ionut Flavius Pogacian

  I have 4 tables and i want to join them and extarct 4 values. I wrote the followig MySql Query, but it does not work. select `a`.`id`,`a`.`page` xpage,`a`.`action`, `b`.`header` xheader, `b`.`page_id`, `c`.`content` xcontent,`b`.`page_id`, `d`.`footer` xfooter,`d`.`page_id` join `header` b on `a`.`id`=`b`.`page_id` join `content` c on `a`.`id`=`c`.`page_id` and `a`.`id`=`d`.`page_id` join `footer` d on `a`.`id`=`d`.`page_id` where `a`.`page`='main'

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• year as a Column Name in a MySQL Table

  - by Laxmidi

  Hi, I've got an easy question. Is it okay to name a column in a mysql table 'year'? Any reason not to? Thanks, -Laxmidi

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• How do I properly use LINQ with MySQL?

  - by Arda Xi

  I've been looking this up on Google for hours, but I haven't found anything conclusive. So far, I've seen a few paid options, an option with NHibernate, but most are marked as unstable or in production. Is there a stable implementation of LINQ for MySQL?

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• Beginner MYSQL Error - Access Denied

  - by WANNABE

  ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: N O) I've tried EVERYTHING, I've read through pages of answers and no-one seems to know the right one. When i try to log into my DB i just get the above error, I havent set a password or anything. Can't log into MySQL at all now, don't understand. Thanks for your help in advance

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• MySQL More Tables or More Rows

  - by Pez Cuckow

  I am working on a game that I am going to open to the public to have on their game. The game stores lots of information (about 300 rows) per website and spends a lot of time updating values within this MySQL database. Is it better (faster/efficient) to add a new table for every website or to just have 1000's of rows in one table and add a column "website_id" or similar?

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• mysql reader not worked when i worked with huge amount of data

  - by Steven Spielberg

  my Select query not worked when i worked with mysql and database have a huge amount of information. i got error System.NullReferenceException: Object reference not set to an instance of an object. for MySqlDataReader reader = cmd.ExecuteReader(CommandBehavior.CloseConnection);

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• Big, Thick Reference Books (PHP / MySQL / Unix) [closed]

  - by Josh K

  I'm looking for in-depth reference books / guides in PHP, MySQL, and Unix. I'm aware there other other questions pertaining to good books for short references of function names, or detailed beginner guides to these systems. I'm looking for something different. I want a book that I can either use as a quick but in-depth (decent write up, not a pocket reference guide) reference to common functions (JOINS, string manipulation, Regular Expressions, etc) while also providing a detailed inner workings explanation on the system itself.

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• select attribute mysql

  - by Viet Tran

  I have there mysql table: **product (id,name)** 1 Samsung 2 Toshiba 3 Sony **attribute (id,name,parentid)** 1 Size 0 2 19" 1 3 17" 1 4 15" 1 5 Color 0 6 White 1 7 Black 2 **attribute2product (id,productid,attributeid)** 1 1 2 2 1 6 3 2 2 4 2 7 5 3 3 6 3 7 And listed them like: Size -- 19" (2 product(s)) -- 17" (1 product) -- 15" (0 product) Color -- White (1 product) -- Black (2 product(s)) Please help me to filter product, eg: when I choose the Size 19" (that product id 1 and 2 have), this will display: Size -- 19" Color -- White (1 product) -- Black (1 product) Thanks,

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• MySQL Group By and bracketing according to age.

  - by text

  Is that possible that MySQL can handle grouping of data according to age bracket? In my users table, age value is their actual age. I want to group them according to age bracket. For example: ages below 1 year old as age1, 1-4 yrs as age2, 5-9 yrs. old as age3 and so on.

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• spatial indexing mysql

  - by shaiju

  i have to integrate spatial indexing in mysql .i got an example i almost done it.in that example INSERT INTO address VALUES('Foobar street 12', GeomFromText('POINT(2671 2500)')); inplace of 2671 and 2500 i have to insert latitude and longitude in below format 35.177 ,-77.11. How is it possibe .Please help me

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• Memcache vs MySQL in memory

  - by TimK

  I have a database that won't grow much in size. It's current size is about 1 GB. Achieving the fastest performance is desired. Question: When should I use Memcache vs simply using MySQL Innodb ability to store all my content within RAM (innodb_buffer_pool_size)?

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