MySQL查看数据库、表的占用空间大小

SELECT SUM(DATA_LENGTH)+SUM(INDEX_LENGTH) FROM information_schema.tables WHERE TABLE_SCHEMA='database_name';

SELECT TABLE_NAME,DATA_LENGTH+INDEX_LENGTH,TABLE_ROWS FROM information_schema.tables WHERE TABLE_SCHEMA='database_name' AND TABLE_NAME='table_name';

sELECT TABLE_NAME,UPDATE_TIME FROM information_schema.tables where TABLE_SCHEMA='database_name';
LOG

//先进去MySQL自带管理库：information_schema
//自己的数据库：dbwww58com_kuchecarlib
//自己的表：t_carmodelparamvalue

mysql> use information_schema;
Database changed
mysql> select data_length,index_length
-> from tables where
-> table_schema='dbwww58com_kuchecarlib'
-> and table_name = 't_carmodelparamvalue';
+-------------+--------------+
| data_length | index_length |
+-------------+--------------+
| 166379520 | 235782144 |
+-------------+--------------+
1 row in set (0.02 sec)

mysql> select concat(round(sum(data_length/1024/1024),2),'MB') as data_length_MB,
-> concat(round(sum(index_length/1024/1024),2),'MB') as index_length_MB
-> from tables where
-> table_schema='dbwww58com_kuchecarlib'
-> and table_name = 't_carmodelparamvalue';
+----------------+-----------------+
| data_length_MB | index_length_MB |
+----------------+-----------------+
| 158.67MB | 224.86MB |
+----------------+-----------------+
1 row in set (0.03 sec)