WordPress includes functionality that lets you track changes to posts and restore previous versions (Post Revisions). However, these increase the size of the wp_posts table in the database since each revision is another row.
To disable the revision saving functionality in WordPress, add the following line to your wp-config.php file:
define( 'WP_POST_REVISIONS', false);Alternatively, if you only want to limit the number of revisions saved, add:
define( 'WP_POST_REVISIONS', X);Replace X with the number of revisions you want to keep.