`grade_id` BIGINT(20) UNSIGNED NOT NULL DEFAULT 0,
`grade_cash_id` BIGINT(20) UNSIGNED NOT NULL DEFAULT 0,
PRIMARY KEY (`id`),
-UNIQUE KEY `grade_cash` (`grade_id`,`grade_cash_id`),
+UNIQUE KEY `grade_cash` (`grade_id`, `grade_cash_id`),
INDEX (`grade_cash_id`)",
'Grade<->cash data connection');
`grade_id` BIGINT(20) UNSIGNED NOT NULL DEFAULT 0,
`grade_expired` TIMESTAMP NOT NULL DEFAULT '0000-00-00 00:00:00',
PRIMARY KEY (`id`),
-UNIQUE KEY (`userid`,`grade_id`),
+UNIQUE KEY (`userid`, `grade_id`),
INDEX (`grade_id`)",
'Grade<->user connection');