-- Read-only audit: repeated active member grants per user/product/quota type.
-- This query does not change quota balances or historical accounting records.
SELECT g.user_id, o.goods_id, g.quota_type,
       COUNT(*) AS grant_count,
       SUM(g.amount) AS granted_amount,
       SUM(g.used) AS used_amount,
       SUM(g.amount - g.used) AS recorded_remaining,
       MIN(g.id) AS first_grant_id,
       GROUP_CONCAT(g.ref_id ORDER BY g.id) AS order_numbers
FROM quota_grants AS g
JOIN orders AS o ON o.order_no = g.ref_id AND o.user_id = g.user_id
WHERE g.source = 1 AND g.deleted_at = 0
GROUP BY g.user_id, o.goods_id, g.quota_type
HAVING COUNT(*) > 1
ORDER BY grant_count DESC, g.user_id, o.goods_id, g.quota_type;
-- recorded_remaining is not necessarily effective remaining: VIP may be expired,
-- and daily quota types use separate daily usage counters. Do not deduct it blindly.