查看数据库、数据表大小

查看每个数据库大小

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)',
sum(truncate(DATA_FREE/1024/1024, 2)) as '碎片占用(MB)'
from information_schema.tables
group by table_schema
order by sum(data_length) desc, sum(index_length) desc;

查看每个数据库中数据表大小

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  order by data_length desc, index_length desc;