ALTER TABLE `#__sr_commission_rates` CHANGE `created_by` `created_by` INT UNSIGNED NOT NULL DEFAULT 0;
ALTER TABLE `#__sr_commissions` CHANGE `created_by` `created_by` INT UNSIGNED NOT NULL DEFAULT 0;
ALTER TABLE `#__sr_subscription_coupons` CHANGE `created_by` `created_by` INT UNSIGNED NOT NULL DEFAULT 0;