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How To Turn Off Post Revision In WordPress 2.6

18/01/2016 Categories: Logiciel Tags:

One of the irritating feature for me in WordPress 2.6 is the post revision. I am the only author of my blog and hence this feature is useless to me.

Just in case you are wondering how post revision works, whenever a post is edited, a new row will be created in wp_posts table. Hence if your posts or pages got edited 10 times, you will have 10 new rows in wp_posts table.

In no time your wp_posts table will be filled up and the post ID will be huge.

To turn off this feature, add this following code to wp-config.php:

define('WP_POST_REVISIONS', false);

You can also delete all post revisions by running this query in phpMyAdmin:

DELETE a,b,c  
FROM wp_posts a  
LEFT JOIN wp_term_relationships b ON (a.ID = b.object_id)  
LEFT JOIN wp_postmeta c ON (a.ID = c.post_id)  
WHERE a.post_type = 'revision'  

Be sure to backup your database first before performing any queries in phpMyAdmin.

*UPDATE* Auto Saves does not create a revision of the post.

*UPDATE 2* Updated SQL query from Andrei Neculau as the previous query does not delete from wp_postmeta and wp_term_relationships tables.

*UPDATE 3* There is a proper way of cleaning up Post Revisions as mentioned by kitchin in Deleting Post Revisions: do NOT use the a,b,c JOIN code you see everywhere. I like his method more than the SQL query above.

Source: Lester Chan’s WordPress Plugins

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