How to Check Database in MySQL - (MySQL Practicles)

When working with MySQL, one of the most basic operations is checking which databases exist on your system. In this tutorial, we'll go over how to check the databases in MySQL.

Syntax

To check which databases exist in MySQL, you can use the following command:

SHOW DATABASES;

This will return a list of all the databases on your MySQL server.

Example

Let's say we want to check which databases exist on our MySQL server. Here's the SQL command we can run:

SHOW DATABASES;

When we run this command in MySQL, we get a list of all the databases on our server:

+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| testdb             |
+--------------------+
4 rows in set (0.00 sec)

In this example, we can see the four databases that exist on our MySQL server: "information_schema", "mysql", "performance_schema", and "testdb".

Output

When we run the example code above, we get a list of all the databases on our MySQL server:

+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| testdb             |
+--------------------+
4 rows in set (0.00 sec)

Explanation

In this example, we used the "SHOW DATABASES" command to list all the databases on our MySQL server. MySQL returned a table with one column, "Database", which contains the names of the databases on the server.

Use

Checking the databases on your MySQL server is a useful way to see which databases exist and make sure that your applications and users have access to the data they need.

Important Points

• The "SHOW DATABASES" command lists all the databases on your MySQL server.
• You must have the necessary permissions to access and view the databases.
• The number of databases on your server may vary depending on your setup.

Summary

In this tutorial, we went over how to check the databases in MySQL using the "SHOW DATABASES" command. We covered the syntax, example, output, explanation, use, and important points of checking the databases in MySQL. With this knowledge, you can now check which databases exist on your MySQL server and ensure that your applications and users have access to the data they need.