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Put this into your ~/.bashrc to create a database for mysql with a user and password.
Usage: createdb `database` `datbase-user` `database-password`.
Backs up all databases, excluding test, mysql, performance_schema, information_schema.
Requires parallel to work, install parallel on Ubuntu by running: sudo aptitude install parallel
There must be no space between -p and the password
Given a dump.sql file, extract table1 creation and data commands. table2 is the one following table1 in the dump file. You can also use the same idea to extract several consecutive tables.
You can put this into your shell sourced file like .bashrc or .zshrc to have a different mysql prompt.
See http://dev.mysql.com/doc/refman/5.1/de/mysql-commands.html for more informations.
Beware that currently with mysql 5.5 the seconds are buggy and won't be displayed if you put this into a .cnf file. With the enironment variable this will work.
A basic usage
Kills all the threads from the user provided in the WHERE request.
Can be refined through the SQL request, of course, see http://dev.mysql.com/doc/refman/5.1/en/processlist-table.html for the available columns.
This shows the number of threads allocated per user.
Count the number of active connections to a MySQL database.
The MySQL command "show processlist" gives a list of all the active clients.
However, by using the processlist table, in the information_schema database, we can sort and count the results within MySQL.
This command will help you to find how many number of connection are made to given mysql and what are the different hosts connected to it with number of connection they are making.
Convert all Tables from MyISAM to InnoDB
Listens on local port 5500 and connects to remotehost with username user to tunnel the given socket file. Will work with anything, but can be useful if there's a need for a local application to connect with a remote server which was started without networking.
Create a secure tunnelled connection for access to a remote MySQL database.
For example, connect with MySQL Workbench to firstname.lastname@example.org:13306.
Finds all tables that need optimising and loops through them, running optimise against them. This works server-wide, on all databases and tables.
Exports the result of query in a csv file
mtop allows you to monitor the operation of a MySQL application in real time. See, among the high, the number of queries performed per second, slower queries, the number of active processes.
To install on Ubuntu
sudo apt-get-y install mtop
Mysql command to list the disk usage of the database
This should probably only be used for testing in a dev environment as it's not terribly efficient, but if you're doing something that might trash a DB and you still want the old data available, this works like a charm.