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WP-Database-Optimizer helps you to optimize your database by performing some actions for example optimizing tables, deleting revisions and data that can slow that your database. Also 
you can perform backups.
WP Database Optimizer Tools es un plugin el cual ayuda a mejorar el rendimiento de nuestra base de datos, esto es de mucha ayuda cuando sabemos que tenemos muchas visitas y necesitamos aligerar el sitio para un mejor funcionamiento.
Con WP Database Optimizer Tools se puede hacer
<pre><code>Limpiar las revisiones de post
Limpiar los autodraft
Limpiar spam
Limpiar comentarios no aprovados
Limpiar la trash de wordpress
Optimizar las tablas en la base de datos
Reparar las tablas en la base de datos
Se puede hacer un backup de la base de datos ( mas adelante pondra opcion para enviar por email el backup)
</code></pre>
<h3>Usage</h3>
<ol>
<li>Click the DB optmizer menu in your WordPress admin area.</li>
<li>Select any option to perform to your database</li>
<li>
To backup your database select DB Backup, select the tables you want to backup and download the SQL file.
*** SECURITY WARNING *** 
Your database backup contains sensitive information, 
and should not be left on the server for any extended 
period of time. The “Save to server” delivery method is provided 
as a convenience only. I will not accept any responsibility 
if other people obtain your backup file. 
*** SECURITY WARNING ***
</li>
</ol>
<h3>Past Contributors</h3>
None

WP-Database-Optimizer-Tools

WP-Database-Optimizer helps you to optimize your database by performing some actions for example optimizing tables, deleting revisions and data that c …

Olar Marius

Justin Watt

Instead of needing a tool like <a href="http://www.phpmyadmin.net/home_page/index.php" rel="nofollow ugc">phpMyAdmin</a> 
or the mysql command line client to view and modify your WordPress database, 
the SQL Executioner allows you to run arbitrary SQL queries against your 
WordPress database from within the Admin. In many cases this allows you to bypass 
the inherent limitations of the WordPress Admin interface, and use the full expressive 
power of SQL to analyze and update your blog’s database.
To use simply install and visit the Tools > SQL Executioner page.
If you’re interested in contributing to the code behind this plugin, it’s also hosted on GitHub: 
https://github.com/justincwatt/wp-sql-executioner

SQL Executioner

This plugin seems to me simple but very useful.

Simple and efficient

I use this plugin on a daily basis to run quick queries in the database while developing. Very very helpful!!!

Amazing Tool

Execute arbitrary SQL queries against your WordPress database from the Admin.

WP-Database-Optimizer-Tools vs SQL Executioner