Mysql 统计库里所有表行数mysql统计一个数据库里所有表的数据量，单个表可以通过select count(*) 来统计，如果统计真个库的这种方法肯定不行。
select table_schema as '数据库', table_name as '表名', table_comment as '表注释', 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='test' order by table_rows desc, index_length desc;