MySQL 8.0 INSTANT ADD and DROP Column(s)
- https://blogs.oracle.com/mysql/post/mysql-80-instant-add-drop-columns
- https://blogs.oracle.com/mysql/post/mysql-80-instant-add-and-drop-columns-2
MySQL 8.0: Instant ADD COLUMN for InnoDB
- http://mysql.wisborg.dk/2018/07/29/mysql-8-0-12-instant-alter-table/
- https://mysqlserverteam.com/mysql-8-0-innodb-now-supports-instant-add-column/
- https://blogs.oracle.com/mysql/post/mysql-80-instant-add-drop-columns
- https://blogs.oracle.com/mysql/post/mysql-80-instant-add-and-drop-columns-2
MySQL 8.0: Instant ADD COLUMN for InnoDB
- http://mysql.wisborg.dk/2018/07/29/mysql-8-0-12-instant-alter-table/
- https://mysqlserverteam.com/mysql-8-0-innodb-now-supports-instant-add-column/