WordPress database error: [Lost connection to MySQL server during query]
SELECT post_date_gmt FROM wp_posts WHERE post_status = 'publish' AND post_type = 'post' ORDER BY post_date_gmt DESC LIMIT 1

WordPress database error: [MySQL server has gone away]
SELECT SQL_CALC_FOUND_ROWS wp_posts.* FROM wp_posts WHERE 1=1 AND wp_posts.post_type = 'post' AND (wp_posts.post_status = 'publish') ORDER BY wp_posts.post_date DESC LIMIT 0, 100

WordPress database error: [MySQL server has gone away]
SELECT FOUND_ROWS()