How do I change my table from InnoDB to MyISAM?
The MySQL database can be dumped into a SQL file using mysqldump followed by replacing “ENGINE=INNODB” with “ENGINE=MyISAM“. Then the database can be dropped (deleted), recreated and the SQL dump that is modified can be restored. Then drop the user_db database and recreate it again.
How do I change the engine in MySQL?
Login to phpMyAdmin. Navigate to database table whose storage engine you wish to change. Click on Operations tab, under Table options you would find drop down called Storage Engine. Select storage engine of your choice from the Storage Engine drop down and click on Go button.
How do I change my database engine to InnoDB?
Access phpMyAdmin and select your database. Then click on SQL, place the following query and click on Go: ALTER TABLE my_table ENGINE = InnoDB; If the query is executed properly, the database engine of the table will be changed to InnoDB.
How do I change MyISAM to InnoDB in MySQL?
Running a Query
- Access the SQL command center for the preferred database.
- Run the ALTER TABLE command in the MySQL shell to convert the storage engine. To convert to MyISAM, run: ALTER TABLE table_name ENGINE=MyISAM; To convert to InnoDB, run: ALTER TABLE. table_name ENGINE=InnoDB;
- Click the GO button to run the query.
Is InnoDB faster than MyISAM?
In a simple world, MyISAM is faster for reads, InnoDB is faster for writes. Once you start introducing mixed read/writes, InnoDB will be faster for reads as well, thanks to its Row locking mechanism.
How do I change all tables to InnoDB?
To do this, login to your MySQL/MariaDB from CLI and run below query. AND table_schema = ‘mydb’; Replace mydb with your actual database name. This will give you a list of tables in the database mydb using MyISAM and the queries you need to use for converting them into InnoDB.
How do I change my default engine to InnoDB in MySQL?
Set your default storage engine to InnoDB by adding default_storage_engine=InnoDB to the [mysqld] section of the system config file located at: /etc/my. cnf. Restarting the MySQL service is necessary for the server to detect changes to the file.
Can I convert MyISAM to InnoDB?
Convert MyISAM to InnoDB with phpMyAdmin
You can convert MyISAM to InnoDB fairly easily. This example is below is using the wp_comments table. Simply run the ALTER command to convert it to InnoDB storage engine. … Simply click on the myISAM table, click into the “Operations” tab, and change the storage engine.
What Cannot have a trigger associated with it?
Since triggers execute as part of a transaction, the following statements are not allowed in a trigger: All create commands, including create database, create table, create index, create procedure, create default, create rule, create trigger, and create view. All drop commands. alter table and alter database.
Which is the best engine to alter the table?
It is even faster on some operations because it doesn’t support transactions and foreign keys and this eliminates the overhead associated with them. If the only queries that use a table are SELECT s and INSERT s (no UPDATE s, DELETE s) then MyISAM is the best engine one can get on MySQL .
Which command will return a list of triggers?
SHOW TRIGGERS lists the triggers currently defined for tables in a database (the default database unless a FROM clause is given). This statement returns results only for databases and tables for which you have the TRIGGER privilege.
What Cannot have a trigger associated with it in MySQL?
MySQL triggers cannot: Use SHOW , LOAD DATA , LOAD TABLE , BACKUP DATABASE, RESTORE , FLUSH and RETURN statements. Use statements that commit or rollback implicitly or explicitly such as COMMIT , ROLLBACK , START TRANSACTION , LOCK/UNLOCK TABLES , ALTER , CREATE , DROP , RENAME.
Does MyISAM support foreign keys?
However, the older MyISAM storage engine does not include support for foreign keys. … This means that MyISAM tables that are reverse engineered will not automatically have the relationship lines drawn between tables, making the database harder to understand.
How do I check my storage engine in MySQL?
Issue the SHOW ENGINES statement to view the available MySQL storage engines. Look for DEFAULT in the SUPPORT column. mysql> SHOW ENGINES; Alternatively, query the INFORMATION_SCHEMA.