CREATE TABLE IF NOT EXISTS `{$prefix}predictions_audit_log` (
  `log_date` DATETIME NOT NULL ,
  `user_id` INT UNSIGNED NOT NULL ,
  `type` TINYINT UNSIGNED NOT NULL ,
  `source_id` INT UNSIGNED NOT NULL ,
  `result_code` TINYINT UNSIGNED NOT NULL ,
  `log_value` VARCHAR(200) NOT NULL ,
  INDEX `ix_log_date` (`log_date`),
  INDEX `ix_user_id` (`user_id`),
  INDEX `ix_source_id` (`source_id`)
) DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

ALTER TABLE `{$prefix}teams` ADD `is_favorite` TINYINT UNSIGNED NOT NULL DEFAULT '0' AFTER `is_active`;