Show the top 10 entries in autoload, and how many entries
SELECT 'autoloaded data in KiB' as name, ROUND(SUM(LENGTH(option_value))/ 1024) as value FROM wp_options WHERE autoload='yes'
UNION SELECT 'autoloaded data count', count(*) FROM wp_options WHERE autoload='yes'
UNION (SELECT option_name, length(option_value) FROM wp_options WHERE autoload='yes' ORDER BY length(option_value) DESC LIMIT 10)