If you have website created in or around the year 2009-2010 then your website still be using MyISAM based tables even if you have already upgraded your mysql server version to the superior or latest, like i had one.
Here are the steps to convert all MyISAM tables into InnoDB.
login into SSH terminal and run the commands and queries.
step 1:
mysql -u root -p database_name
you will be asked to enter password, then you will see mysql console where you can execute queries.
step 2:
SELECT CONCAT('ALTER TABLE ',TABLE_NAME,' ENGINE=InnoDB;')
FROM INFORMATION_SCHEMA.TABLES
WHERE ENGINE='MyISAM'
AND table_schema = 'database_name';
now you will all table names that has MyISAM as storage engine with query format to convert into InnoDB.
example
ALTER TABLE table_name ENGINE=InnoDB;
step 3: now copy all the alter queries and paste in the mysql console. you can copy paste one by one or all at once.
be aware of | and +------------------------------------------------------+ around the list. you can use text/code editor like notepad, notepad++ , vs code to remove those characters.
Thanks & Credits to https://computingforgeeks.com/how-to-convert-all-mysql-tables-from-myisam-into-innodb-storage-engine/
