If you own or administers a blog, most likely you uses WordPress.
One of the enemies of blogging softwares are spams - people and bots who puts a lot of trashy comments in your posts.
In such a case you forgot to install an anti-spam plugin, chances are you already got hundreds of thousands of comments pouring into your WordPress admin waiting for you to delete.
Thats was not a very and nice task to do - delete or mark each of those comments
The best and fastest solution to this is by deleting the unapproved comments directly via your database
You need to have an access to your database in order to do this (phpmyadmin or ssh)
then execute this: DELETE from wp_comments WHERE comment_approved = '0';
then there you go, problem solved!
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