Versions:

phinx: 0.11
mysql: 8+
pho: 7.2

Refering to: dbeaver/dbeaver#10797

when creating a colum which has CURRENT_TIMESTAMP as the default value, mysql adds 'DEFAULT_GENERATED' into the extra column.

This then gets added to any alter statements and causes a syntax issue.

REPRODUCTION:

####Create a table with a datetime field with CURRENT_TIMESTAMP as the default value.

CREATE TABLE `test_table` (
	`id`  INT NOT NULL AUTO_INCREMENT,
	`name` VARCHAR(80) NOT NULL,
	`last_changed` DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
	PRIMARY KEY (`id`) USING BTREE
)

####using phinx to rename the column

public function change(){
    $this->table('test_table')
            ->renameColumn('last_changed', 'updated_at')
            ->update();
}