語法;
drop database ‘DBname‘;

說明：普通mysql用戶需要root用戶賦特定刪除或者創建的權限

溫馨提醒：刪除數據庫請多次確認是否要刪除，刪除數據庫是不可逆的操作。

一、MySQL內置刪庫

[root@mysql-linuxview ~]# mysql -uroot -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MySQL connection id is 29
Server version: 5.7.18-log Source distribution

Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.

MySQL [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| linuxtest          |
| linuxview          |
| ltest              |
| lvtest             |
| mysql              |
| performance_schema |
| sys                |
| viewtest           |
+--------------------+
9 rows in set (0.00 sec)

MySQL [(none)]> drop database lvtest;
Query OK, 0 rows affected (0.38 sec)

MySQL [(none)]>
 

二、MySQLadmin刪庫

[root@mysql-linuxview ~]# mysqladmin -uroot -p  drop linuxtest                #drop後面填寫要刪除的數據庫
Enter password:
Dropping the database is potentially a very bad thing to do.
Any data stored in the database will be destroyed.

Do you really want to drop the ‘linuxtest‘ database [y/N] y          #提示是否刪除該數據庫（不可逆）
Database "linuxtest" dropped
[root@mysql-linuxview ~]#
 

三、PHP刪庫

語法
mysqli_query(connection,query,resultmode);

參數說明：

實例操作

[root@mysql-linuxview web]# cat  index.php
<?
$dbhost = ‘localhost:3306‘;   //MySQL的服務器地址和端口
$dbuser = ‘root‘;             //登錄MySQL數據庫用戶名
$dbpass = ‘000000‘;           //登錄MySQL數據庫用戶密碼
$conn = mysqli_connect($dbhost,$dbuser,$dbpass);
if ( ! $conn)
{
        die(‘Could not connect:‘ .  mysqli_error());
}
echo ‘connect success!!!<br />‘;
$vsql1 = ‘drop database linuxview‘;
$retval = mysqli_query($conn,$vsql1);
if ( ! $retval)
{
    die(‘刪除數據庫失敗:‘ .  mysqli_query($conn));
}
echo "刪除數據庫linuxview成功\n";
mysqli_close($conn);
?>
[root@mysql-linuxview web]#
 

查看效果;

查看數據庫：
MySQL [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
| viewtest           |
+--------------------+
5 rows in set (0.00 sec)

MySQL [(none)]>

DBA：多方式刪庫不跑路