Optimize WP StatPress plugin database performance

The WordPress plugin StatPress (no longer available in the Plugin Directory) is still widely used and still is very slow. Here are some MySQL statements you can use to optimize its performance, as a WordPress optimization tip...

All kudos go to Felipe Ferreira for this one. Read his post Statpress is slow to understand why I posted these MySQL statements here, and what they do. Where necessary, replace wp_ with your own MySQL database table prefix.

ALTER TABLE wp_statpress MODIFY DATE INT(8) UNSIGNED NOT NULL;
ALTER TABLE wp_statpress ADD KEY (date);
ALTER TABLE wp_statpress MODIFY ip CHAR(15) NOT NULL;
ALTER TABLE wp_statpress ADD KEY (ip);
ALTER TABLE wp_statpress MODIFY spider VARCHAR(16);
ALTER TABLE wp_statpress MODIFY feed VARCHAR(16);

Optional:

ALTER TABLE wp_statpress ADD KEY (spider);
ALTER TABLE wp_statpress ADD KEY (feed);