MariaDB 库的基本操作

创建数据库

1.创建一个lyshark数据库.

MariaDB [(none)]> create database lyshark charset utf8;
Query OK, 1 row affected (0.00 sec)

2.查看创建好的数据库lyshark的定义

MariaDB [(none)]> show create database lyshark\G
*************************** 1. row ***************************
Database: lyshark
Create Database: CREATE DATABASE `lyshark` /*!40100 DEFAULT CHARACTER SET gbk */
1 row in set (0.00 sec)

查询数据库

1.显示所有数据库

MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| lyshark |
| mysql |
| performance_schema |
+--------------------+
4 rows in set (0.00 sec)

MariaDB [(none)]>

2.匹配以lys开头的数据库

MariaDB [(none)]> show databases like 'lys%';
+-----------------+
| Database (lys%) |
+-----------------+
| lyshark |
+-----------------+
1 row in set (0.00 sec)

MariaDB [(none)]>

更新数据库

1.修改指定数据库的字符集为gbk

MariaDB [(none)]> alter database lyshark charset gbk;
Query OK, 1 row affected (0.00 sec)

删除数据库

MariaDB [(none)]> drop database lyshark;
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
+--------------------+
3 rows in set (0.00 sec)

MariaDB [(none)]>