Fabricio Carella

This plugin will allow you to execute any type of SQL query into the WordPress’s DB connecting through the driver provided by the MySQLi extension without the need to use another tool like phpMyAdmin.
It also gives you the ability to export the results in a CSV format file.
In order to access this plugin’s admin page (Tools -> Run SQL Query), your account needs to have the <code>install_plugins</code> capability, that means a Super Admin in the multi-site installation or an Admin in a single site.
Feel free to contribute: 
https://github.com/Sefirost/run-sql-query
Use on you own risk. Under no circumstances will the Author of this plugin assume responsibility or liability for any damages or destructive effects on the database resulting from the queries executed using this tool.

Run SQL Query

Run SQL Query is a simple plugin to quickly execute any type of SQL query into the WordPress's DB and export the results in a CSV format file.

Anthony

Alex and Anthony

WP Backup is a plugin that allows you to easily preform an sql backup and and create a tar and gzipped backup of your /wp-content/ directory from within your dashboard. The plugin is very secure and only allows administrators to preform a backup. 
 This plugin allows you to create a backup and download it or upload it to your Dropbox account or email it to the administrator as an attatchment. This plugin also works great and has been tested on blogs with thousands of posts.
The best way to get fast support is by posting your question in a comment at http://anthony.strangebutfunny.net/my-plugins/alex-wp-backup/

WordPress SQL Backup

WP Backup is a plugin that allows you to easily preform an sql backup and and create a tar and gzipped backup of your /wp-content/ directory from with …

Run SQL Query vs WordPress SQL Backup