#165 Si hay modificaciones en la estructura de la base de datos:
ALTER TABLE `comments` ADD `comment_votes` SMALLINT( 4 ) NOT NULL DEFAULT '0' AFTER `comment_ip` ;
ALTER TABLE `comments` CHANGE `comment_date` `comment_date` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ;
ALTER TABLE `comments` ADD `comment_order` SMALLINT NOT NULL DEFAULT '0' AFTER `comment_ip` ;
ALTER TABLE `comments` DROP `comment_nick` ;
ALTER TABLE `comments` ADD `comment_votes` SMALLINT( 4 ) NOT NULL DEFAULT '0' AFTER `comment_ip` ;
ALTER TABLE `comments` CHANGE `comment_date` `comment_date` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ;
ALTER TABLE `comments` ADD `comment_order` SMALLINT NOT NULL DEFAULT '0' AFTER `comment_ip` ;
ALTER TABLE `comments` DROP `comment_nick` ;
.. hay cuatro tablas.