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MySQL view and modify the default storage engine

MySQL supports multiple storage engines, each with its own advantages and disadvantages. The most commonly used storage engine in MySQL is InnoDB, as it supports transactions, row-level locking, and foreign keys.

You can check the default storage engine of your MySQL server by running the following SQL command:

SHOW VARIABLES LIKE 'default_storage_engine';

This will return the current default storage engine.

If you want to change the default storage engine, you can do so by modifying the MySQL configuration file. The steps vary slightly depending on your operating system.

For Unix and Linux Systems:

Open your MySQL configuration file. The exact location of this file can vary, but common locations include /etc/my.cnf or /etc/mysql/my.cnf.
Look for a section labeled [mysqld]. Under this section, you can specify the default storage engine by adding or modifying the following line:
```
default-storage-engine = ENGINE_NAME
```
Replace ENGINE_NAME with the name of the storage engine you want to use (for example, innodb).
Save the changes and close the file.
Restart your MySQL server for the changes to take effect. You can typically do this with a command like service mysql restart or systemctl restart mysql, depending on your specific system.

For Windows Systems:

Open your MySQL configuration file, usually named my.ini, which is typically located in the MySQL installation directory.
Look for a section labeled [mysqld]. Under this section, you can specify the default storage engine by adding or modifying the following line:
```
default-storage-engine=ENGINE_NAME
```
Replace ENGINE_NAME with the name of the storage engine you want to use (for example, innodb).
Save the changes and close the file.
Restart your MySQL service for the changes to take effect. You can do this through the services management console (services.msc), or by using the net stop and net start commands from the command prompt.

Remember, changing the default storage engine will only affect new tables that are created. Existing tables will continue to use the storage engine they were created with.

View default storage engine in MySQL:
- To view the default storage engine in MySQL, you can check the global variable storage_engine.
```
SHOW VARIABLES LIKE 'storage_engine';
```
Check default storage engine for MySQL databases:
- Check the default storage engine for MySQL databases by querying the information_schema.
```
SELECT SCHEMA_NAME, DEFAULT_STORAGE_ENGINE
FROM information_schema.SCHEMATA
WHERE SCHEMA_NAME = 'your_database_name';
```
How to find MySQL default storage engine:
- Find the default storage engine for MySQL by querying the information_schema.
```
SELECT @@default_storage_engine AS default_storage_engine;
```
Modify default storage engine in MySQL:
- Modify the default storage engine in MySQL by updating the my.cnf configuration file. Add or modify the default_storage_engine parameter.
```
-- Add to my.cnf
[mysqld]
default_storage_engine=InnoDB
```
Change default storage engine for MySQL tables:
- Change the default storage engine for MySQL tables by specifying the desired storage engine during table creation.
```
CREATE TABLE my_table (
    id INT PRIMARY KEY,
    name VARCHAR(255)
) ENGINE=MyISAM;
```
MySQL set default storage engine command:
- Set the default storage engine in MySQL using the SET command.
```
SET default_storage_engine=InnoDB;
```
View and update default storage engine in MySQL:
- View and update the default storage engine in MySQL by querying and modifying the default_storage_engine variable.
```
-- View default storage engine
SHOW VARIABLES LIKE 'default_storage_engine';

-- Update default storage engine
SET GLOBAL default_storage_engine=InnoDB;
```
Configure default storage engine for MySQL:
- Configure the default storage engine for MySQL by modifying the my.cnf configuration file.
```
-- Add to my.cnf
[mysqld]
default_storage_engine=MyISAM
```
MySQL show default storage engine:
- Use the SHOW command to display the current default storage engine.
```
SHOW VARIABLES LIKE 'default_storage_engine';
```
Setting default storage engine globally in MySQL:
- Set the default storage engine globally in MySQL by modifying the my.cnf configuration file.
```
-- Add to my.cnf
[mysqld]
default_storage_engine=MEMORY
```