May 16, 2021 MariaDB
Creating or deleting a database in MariaDB requires privileges and is usually granted only to root users or administrators. U nder these accounts, you have two options for deleting the database: mysqladmin binary files and PHP scripts.
Note that the deleted database is not recoverable, so do this with caution. A dditionally, the PHP script used to delete does not prompt you for confirmation before deleting.
The following example shows how to use the mysqladmin script to delete an existing database -
[root@host]# mysqladmin -u root -p drop PRODUCTS Enter password:****** mysql> DROP PRODUCTS ERROR 1008 (HY000): Can't drop database 'PRODUCTS'; database doesn't exist
PHP uses the same function when deleting the MariaDB mysql_query database. T he function uses two arguments, one optional, and returns the value "true" if successful, otherwise "false".
Check out the following delete database script syntax -
bool mysql_query( sql, connection );
The description of the parameters is given below -
| S.No | Parameters and descriptions |
|---|---|
| 1 |
Sql This required parameter consists of the SQL query required to perform the operation. |
| 2 |
connection
When not specified, this optional parameter uses the most recently used connection. |
Try the following sample code to delete the database -
<html>
<head>
<title>Delete a MariaDB Database</title>
</head>
<body>
<?php
$dbhost = 'localhost:3036';
$dbuser = 'root';
$dbpass = 'rootpassword';
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
if(! $conn ) {
die('Could not connect: ' . mysql_error());
}
echo 'Connected successfully<br />';
$sql = 'DROP DATABASE PRODUCTS';
$retval = mysql_query( $sql, $conn );
if(! $retval ){
die('Could not delete database: ' . mysql_error());
}
echo "Database PRODUCTS deleted successfully
";
mysql_close($conn);
?>
</body>
</html>
After successful deletion, you will see the following output -
mysql> Database PRODUCTS deleted successfully