查询数据库里面 行数多的表

select * from (
select
table_schema as dbname,
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) a where a.dbname="Whztc2YSDB"