SELECT entry,pid,rank,used,free, real_used,total_size,total_frags,fecha,hora,
SUBSTRING((real_used/total_size)*100, 1, 5) por_real_used,
SUBSTRING((free/total_size)*100, 1, 5) por_free,
((free/total_size)*100 +(real_used/total_size)* 100) total
FROM pkg_stats
ORDER BY fecha DESC, hora DESC limit 32;