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• Mysql query for within a specific date

  - by Ajith

  I need to retrieve data from within a specific date range.Anybody can help me to create a query to getting the information within date range 12-12-2009 to 12-15-2009 from a mysql table.(including 12 and 15)

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• Primary key in MySQL: INT(n) or UUID as varchar(36)

  - by SODA

  Does it make sense to use UUID as primary key in MySQL? What would be pros and cons of using UUID instead of regular INT, beside trouble of hand querying?

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• MySQL Order by ASC almost 20 times slower than DESC [closed]

  - by Salman Akram

  Possible Duplicate: MySQL ORDER BY DESC is fast but ASC is very slow Order by DESC is super fast and Order by ASC takes almost 20 times more time. How could it be caused and how could it be solved?

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• How to simulate "MYSQL has gone away" error?

  - by Lost_in_code

  I'm running lots of cron job and once in a while there is a MYSQL has gone away error. I've now written some code to handle the error, but how do I simulate the error on my localhost so that the code can be tested thoroughly?

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• What Mysql query will return this result?

  - by Lost_in_code

  I have two tables A,B which are related to each other (simplified): A: +-------+---------+ | id | type | +-------+---------+ | 1 | apple | | 2 | orange | | 3 | banana | +-------+---------+ B: +-------+---------+-----------+ | id | a_id | rank | +-------+---------+-----------+ | 1 | 1 | 0.0 | | 2 | 1 | 7.7 | | 3 | 2 | 3.3 | | 4 | 2 | 8.8 | | 5 | 2 | 1.1 | | 6 | 3 | 3.3 | | 7 | 3 | 5.5 | | 8 | 1 | 9.5 | +-------+---------+-----------+ What mysql query will return the following result? Result +-------+---------+-----------+ | id | type | rank | +-------+---------+-----------+ | 1 | apple | 9.5 | | 2 | orange | 1.1 | | 3 | banana | 5.5 | +-------+---------+-----------+

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• PHP & MySQL question user submitted data?

  - by comma

  I was wondering how can I allow users to enter HTML and CSS to the there profiles safely using PHP and MySQL like they do on MySpace.

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• store Current Date & time in MySql Using ASP.net

  - by Khilen

  I want to store the current date & time which can be get by System.DateTime.Now in asp.net but while storing in Mysql it gives Error of Invalid Time.

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• How do I prevent sql injection with php and mysql

  - by herrturtur

  I have a form into which the visitor can enter data, and I want to store this data in a mysql database via the $_POST variable. What do I need to prevent sql injection?

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• migrate a portion of a mysql table to SQLite

  - by daniel

  I have a mysql table set up like so: user_id | document 44 [blob] 44 [blob] 44 [blob] 46 [blob] I'd like to export all of user_id 44's data to an SQLite3 file. Best way to go about this without writing a script that reads the data and dumps it into a SQLite file?

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• Best way to fetch last 4 rows from a result set using mysql

  - by PHP-Prabhu

  Can any one please let me know, that, i need to fetch last 4 rows from a result-set using mysql. The result-set returns totally 6 records. but, i need the records to be fetch from last4...i.e, Record-3 Record-4 Record-5 Record-6

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• Accessing Mysql with JQuery without using php

  - by user326175

  Hi, I'm very new to JQuery, but I was told the one of the cool things about it is you can query a mysql database right from an html page(or in my case a smarty template)with out needing php. I have not found any examples of this so I am asking if someone has one? Thanks

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• MySQL: Digits (1.75) to Friendly Time (1 hour and 45 minutes)

  - by Nick

  In my MySQL database, I have a float field named "HoursSpent" with values like "0.25", "1.75", "2.5", etc. Is there a way that I can have my SELECT statement format those values in a friendly format like this?: 0.25 = 15 minutes 1.75 = 1 hour and 45 minutes 2.5 = 2 hours and 30 minutes The "HoursSpent" field is supposed to only have values in 0.25 increments, but if somebody were to put something random like 0.16, it would be nice if the SELECT statement handled that by rounding it up to the nearest 0.25 (so in this case 0.16 would become 0.25, or 15 minutes).

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• MySQL skip first 10 results

  - by Brian

  Is there a way in MySQL to have the first 10 result from a SELECT query skipped? I'd like it to work something like LIMIT.

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• mysql procedure call in codeigniter

  - by ASD

  Any simple example of mysql stored procedure and example to show how to call that procedure from codeigniter php. Any help?

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• Mysql Trigger to select and delete

  - by Karthick

  Hi, Is this possible, can a trigger in mysql can do a select first and then based on its result do a delete?, both on the same table. Am struggling to get it right. There are duplicate entries in a table, i need to have a trigger which selects and then deletes. Any ideas or thoughts will be really helpful.

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• MySQL: SUM in WHERE clause

  - by checcco

  Hi guys, I've got this table CREATE TABLE `subevents` ( `id` int(11) NOT NULL AUTO_INCREMENT, `title` varchar(150) DEFAULT NULL, `content` text, `class` tinyint(4) NOT NULL DEFAULT '1', PRIMARY KEY (`id`) ) ENGINE=MyISAM Each row can have a different value in the 'class' field. I'd like to select any number of rows, ordered randomly, as long as the sum of the values in the 'class' field is equal to 100. How could I accomplish it directly in the MySQL query without doing it later in PHP? Thanks everybody!

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• MySQL - What is the correct primary key method

  - by Hammerstein

  I'm starting to develop an application using MySQL and although I've developed apps before using databases, I've normally gone to the incrementing id method. The other day I was reading a posting somewhere and saw someone being picked apart for this, for not properly "normalising the database". I'm not a big database person, but I wanted to make sure I'm doing this right. Any ideas, help / guidance?

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• Getting rows which include a value with MySQL

  - by sundowatch

  I have a MySQL query which gets including some vars like that: messages TABLE receiver cols user1 rows : 1,3,5 user2 rows : 2,3 user3 rows : 1,4 I want to get rows which includes '3' value. So I will get 'user1' and 'user2'. I tried that but naturally it doesn't work. mysql_query("SELECT * FROM messages WHERE receiver='3'"); How can I do this?

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• MySQL One to Many order by number found in joined table

  - by Finbarr

  Two tables: table_a ------- table_a_id: (primary, int) table_b ------- table_a_id: (index, int, from table_a) table_b_value: (varchar) A one to many relationship between table_a_id and table_b_value. Given a query like this: SELECT DISTINCT(table_a_id) FROM table_a JOIN table_b ON table_a.table_a_id=table_b.table_a_id I want to order by the number of occurrences of table_a_id in table_b. I'm not really sure how to write this in MySQL.

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• Mysql Windows "mysqldump -t" restore

  - by Glide

  Yes it's Windows sorry. I'm using mysqldump with the option -T which creates a sql and a txt file per table. mysqldump -u user -ppass db -T path I use that option to be able to restore easily one table. Now I'd like to restore all the tables. mysql -u user -ppass db < path/*.sql Obvously doesn't work Also, I don't know where do my funcs/procs go. Thx

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• How to sort MySQL query by two columns

  - by user334269

  The following is my DB data, how can I sorting it by sid and prev_sid with php/mysql!? sid prev_sid type 000 197 app_home 197 198 page_teach 198 218 page_teach 199 211 page_step 211 207 link 218 559 page_step 559 199 page_step Result: sid prev_sid type 000 197 app_home 197 198 page_teach 198 218 page_teach 218 559 page_step 559 199 page_step 199 211 page_step 211 207 link 000 197 198 218 559 199 199 211 207

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• query mysql table and fetch rows posted in 3 days

  - by Mac Taylor

  Hey guys how can i query my mysql database and fetch rows which are posted in earlier 3 days i know how to fetch todays's rows but not 3 days ago time will save in my table like this : 2010-01-20 19:17:49 and this is what i know : SELECT id FROM pages WHERE date=now() but i need to show posts in 3days and im looking for a simple and straight solution ,because i know how to do so in long php codes

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• How to display categories correctly using php & mySQL?

  - by SAD

  Lets say I'm starting a site that users can enter content but all my categories are empty except one or two, how should the empty categories be displayed to my users if at all using MySQL & PHP?

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• summing two colums total in mysql

  - by JPro

  I want a resultset for this table : ID Number_of_posts Number_of_user 1 100 21 2 23 34 as ID Number_of_posts Number_of_user Number_of_posts_AND_Number_of_user 1 100 21 178 2 23 34 178 ----------------------------------------------- 123 55 Is it possible to get the sum of two colums as another column/ as output in mysql?

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• What happens if MySQL database wasn't closed?

  - by mathew

  What happens if MySQL database is not closed? How do we know if it is closed properly?

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