如果需要查看MySQL数据库中都有哪些MySQL数据库表，应该如何实现呢？下面就为您介绍查看MySQL数据库表的命令，供您参考。

进入MySQL Command line client下

查看当前使用的数据库:

mysql>select database();

mysql>status;

mysql>show tables;

mysql>show databases;//可以查看有哪些数据库,返回数据库名(databaseName)

mysql>use databaseName; //更换当前使用的数据库

mysql>show tables; //返回当前数据库下的所有表的名称

或者也可以直接用以下命令

mysql>show tables from databaseName;//databaseName可以用show databases得来

mysql查看表结构命令，如下:

desc 表名;

show columns from 表名;

或者

describe 表名;

show create table 表名;

或者

use information_schema

select * from columns where table_name='表名';

查看警告：

Rows matched: 1 Changed: 0 Warnings: 1

mysql> show warnings;

+---------+------+-------------------------------------------+

| Level | Code | Message |

+---------+------+-------------------------------------------+

| Warning | 1265 | Data truncated for column 'name' at row 3 |

+---------+------+-------------------------------------------+

1 row in set

以上就是查看MySQL数据库表的命令介绍。返回比特网首页>>

mysql 查看表的大小方法：1、查看所有数据库各表容量大小，代码为【truncate(data_length/1024/1024, 2) as '数据容量(MB)'】；2、查看指定数据库各表容量大小。

mysql 查看表的大小方法：

1.查看所有数据库容量大小select

table_schema as '数据库',

sum(table_rows) as '记录数',

sum(truncate(data_length/1024/1024, 2)) as '数据容量(MB)',

sum(truncate(index_length/1024/1024, 2)) as '索引容量(MB)'

from information_schema.tables

group by table_schema

order by sum(data_length) desc, sum(index_length) desc;

2.查看所有数据库各表容量大小select

table_schema as '数据库',

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;

3.查看指定数据库容量大小

例：查看mysql库容量大小select

table_schema as '数据库',

sum(table_rows) as '记录数',

sum(truncate(data_length/1024/1024, 2)) as '数据容量(MB)',

sum(truncate(index_length/1024/1024, 2)) as '索引容量(MB)'

from information_schema.tables

where table_schema='mysql';

4.查看指定数据库各表容量大小

例：查看mysql库各表容量大小select

table_schema as '数据库',

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

where table_schema='mysql'

order by data_length desc, index_length desc;相关学习推荐：mysql教程