MySQL查看空间使用率

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

注意： table_schema表示的是库的名称，自行替换