Files
bl/help/约束类.sql
昔念 3e4b091724
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```
fix(item): 修复物品数量判断逻辑

- 将物品数量判断从 `!= 0` 改为 `> 0`,确保只有正数才添加到列表中
- 将物品检查逻辑从 `< 1` 改为 `<= 0`,确保正确处理边界情况
- 在物品更新方法中增加ID为0的防护,避免无效操作
```
2026-02-22 19:33:17 +08:00

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-- 玩家+物品+VIP状态 联合唯一
ALTER TABLE player_item
ADD CONSTRAINT uk_player_item_player_item_vip
UNIQUE (player_id, item_id, is_vip);