mysql数据库容量查询

select
  table_schema as '数据库',
  sum(table_rows) as '记录数',
  sum(truncate(data_length/1024/1024, 2)) as '数据容量(MB)',
  sum(truncate(index_length/1024/1024, 2)) as '索引容量(MB)'
from information_schema.tables
group by table_schema
order by sum(data_length) desc, sum(index_length) desc;