Wordpress Delete All Spam Comments

gistfile1.sql

/* This SQL statement will remove all the unapproved comments at once: */

DELETE FROM wp_comments WHERE comment_approved = '0';

/* This SQL statement will remove all the spam comments at once: */

DELETE FROM wp_comments WHERE comment_approved = 'spam';

/* This SQL statement will remove all pingbacks and trackbacks: */

DELETE FROM wp_comments WHERE comment_type = 'trackback';