SELECT
  tab.TABLE_SCHEMA as 'database',
  ROUND(sum(data_length) / 1024 / 1024, 2) as 'Tamanho em MB',
  ROUND(sum(index_length) / 1024 / 1024, 2) as 'Tamanho do indice em MB',
  ROUND(sum(DATA_LENGTH + INDEX_LENGTH) / 1024 / 1024, 2) as 'Tamanho toal em MB'
 FROM information_schema.TABLES as tab
 where TABLE_SCHEMA not in ('sys', 'information_schema')
 group by TABLE_SCHEMA
 order by sum(DATA_LENGTH + INDEX_LENGTH) desc;