MySQL查看表和清空表的常用命令总结_MySQL

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

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

desc 表名;
show columns from 表名;

describe 表名;
show create table 表名;

use information_schema
select * from columns where table_name='表名';

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