MySQL怎么查询数据库信息

这篇文章主要讲解了“怎么查询数据库信息”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“MySQL怎么查询数据库信息”吧！

查询数据库信息mysqlshow、show databases

[root@vm1 ~]# mysqlshow -uroot -p

Enter password:

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

|     Databases      |

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

| information_schema |

| mysql              |

| performance_schema |

| sys                |

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

mysql> show databases;

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

| Database           |

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

| information_schema |

| mysql              |

| performance_schema |

| sys                |

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

4 rows in set (0.00 sec)

mysql> select db ,user,host from db;

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

| db  | user      | host      |

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

| sys | mysql.sys | localhost |

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

1 row in set (0.00 sec)

显示当前所在数据库：

mysql> select database();

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

| database() |

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

| mysql      |

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

1 row in set (0.00 sec)