That's only for versions prior 1.0.0 (should be non-existing nowadays). The sql executed on install is:
administrator/components/com_matukio/sql/install.mysql.sql
CREATE TABLE IF NOT EXISTS `#__matukio_booking_coupons` (
`id` INT( 11 ) NOT NULL AUTO_INCREMENT PRIMARY KEY ,
`code` VARCHAR( 255 ) NOT NULL ,
`value` FLOAT( 11,2 ) NOT NULL DEFAULT '0.00',
`procent` TINYINT( 1 ) NOT NULL DEFAULT '1',
`max_hits` INT ( 11 ) NOT NULL DEFAULT '0',
`hits` INT ( 11 ) NOT NULL DEFAULT '0',
`event_id` INT ( 11 ) NOT NULL DEFAULT '0',
`published_up` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
`published_down` DATETIME NOT NULL DEFAULT '0000-00-00 00:00:00',
`published` TINYINT( 1 ) NOT NULL DEFAULT '0'
) DEFAULT CHARSET=utf8mb4 COMMENT='Coupons';
Best,
Yves