ALTER TABLE `offers` ADD `payment_due_days` INT UNSIGNED NOT NULL DEFAULT 15, ADD `currency` VARCHAR(3) NOT NULL DEFAULT 'EUR', ADD `language` VARCHAR(5) NOT NULL DEFAULT 'hr', ADD `internal_notes` TEXT NULL;
ALTER TABLE `offer_items` ADD `estimated_duration_seconds` INT UNSIGNED NULL, ADD `starts_on` DATE NULL, ADD `ends_on` DATE NULL, ADD `unit` VARCHAR(20) NOT NULL DEFAULT 'emitiranje';