2013 Lost connection to MySQL server during query
in:
[select cd.categories_name from categories c, categories_description cd where c.parent_id = 0 and c.categories_id = cd.categories_id and cd.language_id='2' and c.categories_status=1]

2006 MySQL server has gone away
in:
[select count(*) as total from sessions where sesskey = '7h0c22f5qnvgl3jkk2fah7e7t2']