WordPress database error: [Table 'blog.wp_categories' doesn't exist]
SELECT cat_ID FROM wp_categories

WordPress database error: [Table 'blog.wp_post2cat' doesn't exist]
SELECT DISTINCT * FROM wp_posts LEFT JOIN wp_post2cat ON (wp_posts.ID = wp_post2cat.post_id) LEFT JOIN wp_categories ON (wp_post2cat.category_id = wp_categories.cat_ID) WHERE 1=1 AND (category_id = '0') AND post_date_gmt <= '2012-02-04 15:41:59' AND (post_status = "publish") AND post_status != "attachment" GROUP BY wp_posts.ID ORDER BY post_date DESC LIMIT 0, 10

kwikperf.com Blog <div id='error'> <p class='wpdberror'><strong>WordPress database error:</strong> [Table 'blog.wp_categories' doesn't exist]<br /> <code>SELECT cat_name FROM wp_categories WHERE category_nicename = 'displacement-on-demand-problems'</code></p> </div>

Error 404 - Not Found