mysql查看表大小

mysql查看表大小

一：命令 show table status like 'table_name'\G;

mysql> show table status like 'x'\G;
*************************** 1. row ***************************
           Name: x
         Engine: InnoDB
        Version: 10
     Row_format: Compact
           Rows: 97909
 Avg_row_length: 37
    Data_length: 3686400
Max_data_length: 0
   Index_length: 0
      Data_free: 4194304
 Auto_increment: NULL
    Create_time: 2015-05-16 10:41:50
    Update_time: NULL
     Check_time: NULL
      Collation: latin1_swedish_ci
       Checksum: NULL
 Create_options:
        Comment: 

其中的data_length 为数据大小；

二：命令：1> use information_schema; 2>select data_length,index_length  from tables where  table_schema='xxxx'  and table_name = 'xxx';

mysql> use information_schema;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> select data_length,index_length from tables where table_schema ='test' \
    -> and table_name = 'x'\G;
*************************** 1. row ***************************
 data_length: 3686400
index_length: 0
1 row in set (0.00 sec)

MB显示：

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 = 'test' and table_name ='x'\G;
*************************** 1. row ***************************
 data_length_MB: 3.52MB
index_length_MB: 0.00MB
1 row in set (0.04 sec)

TABLE_SCHEMA : 数据库名
TABLE_NAME：表名
ENGINE：所使用的存储引擎
TABLES_ROWS：记录数
DATA_LENGTH：数据大小
INDEX_LENGTH：索引大小