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• How to restrict user from modifying data in mysql data base?

  - by Paul

  We need to deploy application(developed by Java) WAR file in client place which make use of MySql 5.0. But we would like to restrict the user from modifying any data in the database. Is there any way to protect data. The client can make use of the application but they should not be able to change any value in database. How to do that?

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• How can we re-use the deleted id from any MySQL-DB table?

  - by Parth

  How can we re-use the deleted id from any MySQL-DB table? If I want to rollback the deleted ID , can we do it anyhow?

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• PHP - get MySQL query results as their native data type?

  - by redidas

  I've tried fetching MySQL query results using mysql_fetch_row() mysql_result() and numeric values are being returned as strings. Is there any way to fetch the data as its datatype stored in the table? The application will be querying many different queries so I will be unable to cast the values as the intended datatype on a 1 by 1 basis.

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• Which is more efficient in mysql, a big join or multiple queries of single table?

  - by Tom Greenpoint

  I have a mysql database like this Post – 500,000 rows (Postid,Userid) Photo – 200,000 rows (Photoid,Postid) About 50,000 posts have photos, average 4 each, most posts do not have photos. I need to get a feed of all posts with photos for a userid, average 50 posts each. Which approach would be more efficient? 1: Big Join select * from post left join photo on post.postid=photo.postid where post.userid=123 2: Multiple queries select * from post where userid=123 while (loop through rows) { select * from photo where postid=row[postid] }

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• Can I use ALTER DATABASE to rename a mysql database?

  - by thearchitect

  I am using PDO with PHP to create a new database and then a new user with privileges on that database. In case one of them fails, I want to rename the database and user so that they can be deleted later and the names are available. Is it possible to rename a mysql database using the ALTER DATABASE?

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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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• How should i store availability calendar information in mysql? for [id] [date] [available/unavailab

  - by Haroldo

  I'm building a simple calendar for holiday cottages to show when they are booked or available. What would be the fastest mysql table design for this, bearing in mind when users mark dates as available/booked they will do so via a start date and an end date. i can see 2 obvious options Store 'booked' data for every day [more rows] or, store 'booked' data with 2 columns a start_date and end_date [more processing?] Which is best or is there another method i'm missing?

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• Can I restore a single table from a full mysql mysqldump file?

  - by Mobius

  I have a mysqldump backup of my mysql database consisting of all of our tables which is about 440 megs. I want to restore the contents of just one of the tables form the mysqldump. Is this possible? Theoretically, I could just cut out the section that rebuilds the table I want but I don't even know how to effectively edit a text document that size.

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• How do I restore from a drop database command using a mysql binary log?

  - by azl

  How can I restore a mysql database that was dropped using a "drop database" command? I have access to binary logs which should make this type of rollback possible.

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• Retrive all data from mysql table using fluent nhibernate step by step process..

  - by chandru_cp

  As i am a newbie to fluent nhibernate i would like to get step by step tutorial that explains configuring mysql with fluent nhibernate and retriving a table data from it... Any suggestion....

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• How to display mysql rows that contain certain data?

  - by user272899

  I have a table in mysql with a row called 'newrelease'. If the item is a new release my form posts it as 'yes' if no 'no'. How would i display all items that contain the data 'yes'? $query = "SELECT * FROM movielist ORDER BY newrelease DESC LIMIT 4";

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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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• single page javascript send data AND pull data from mysql via php?

  - by David19801

  Hi, I am trying to make a dynamic form which retrives data. How can I use javascript to load a value from a mysql database? I understand that it must use php in some way, and I know how to query the database and assign the value to a php variable, but I have no idea what to do after that...any advice? the goal is to have someone enter their orderid say, then the datbase auto pulls down and enters their last invoice in the field below it after they click GO...

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• How do I change mysql settings so that it is default UTF-8 for everything?

  - by alex

  I am getting "ASCII encoding" errors when I insert into my database because I did a fresh install of the MYSQL. I'd like to change the default to UTF-8 again.

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• COCOA Objective-c : How can connect to mysql database?

  - by kalps1982

  I am creating application for MAC using cocoa framework, I would like to know how and what are the ways i can connect to MySql database using cocoa framework.

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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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• Will MySQL full-text-search return the results I need?

  - by mike

  I have a keyword field with a list of 5 keywords for each item. example below: 2008, Honda, Accord, Used, Car Will MySQL full text return the item above for the following search requests? 2008 Honda Accord Honda Accord Used Car If so, how well will this hold up when searching through fifty thousand plus records?

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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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• 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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• 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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• 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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• Wait 30 seconds in order to allow a new action on PHP and MySQL ???

  - by DomingoSL

  Hello, in my web page a user fill a form who send information to a MySql database. One of the data inputs sent is a date/time, in the format date('l jS \of F Y h:i:s A'); (I can change the format as needed) So when the user submits the form i wanna check if the actual time/date is 30 seconds more than the sent time/date in order to allow or not the submission of the form. Thanks!

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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 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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