mysql查看库里的表存储占用情况

SELECT TABLE_NAME,DATA_LENGTH,INDEX_LENGTH,(DATA_LENGTH+INDEX_LENGTH) 
as length,TABLE_ROWS,concat(round((DATA_LENGTH+INDEX_LENGTH)/1024/1024,3), 
'MB') as total_size FROM
 information_schema.TABLES WHERE TABLE_SCHEMA='库名'
 order by length desc;