ALTER TABLE Improvements in MariaDB Server 10.4

MariaDB Server 10.4 includes new ALTER TABLE improvements. A year earlier, the first GA release of MariaDB Server 10.3 introduced support for ADD COLUMN with ALGORITHM=INSTANT. Now, MariaDB Server 10.4 introduces more classes of ALGORITHM=INSTANT operations, among them instant DROP COLUMN and changing the order of columns. This further extends the InnoDB data file format that was extended in…

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