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@@ -25,25 +25,54 @@
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| created_at | TIMESTAMP | 创建时间 | |
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| updated_at | TIMESTAMP | 更新时间 | |
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-### 1.3 user_items 用户物品表
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+### 1.3 item_instances 物品实例表
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+| 字段 | 类型 | 说明 | 索引 |
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+|------|------|------|------|
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+| id | BIGINT | 实例ID，主键 | PK |
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+| item_id | BIGINT | 物品ID | IDX_item |
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+| attributes | JSON | 实例属性数据 | |
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+| created_at | TIMESTAMP | 创建时间 | |
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+| updated_at | TIMESTAMP | 更新时间 | |
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+
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+### 1.4 user_items 用户物品表
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| 字段 | 类型 | 说明 | 索引 |
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|------|------|------|------|
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| id | BIGINT | 记录ID，主键 | PK |
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| user_id | BIGINT | 用户ID | IDX_user |
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| item_id | BIGINT | 物品ID | IDX_item |
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+| instance_id | BIGINT | 物品实例ID | IDX_instance |
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| warehouse_id | BIGINT | 仓库ID | IDX_warehouse |
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| quantity | INT | 数量（仅堆叠物品） | |
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-| instance_data | JSON | 单独属性数据 | |
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| expire_at | TIMESTAMP | 用户物品过期时间 | IDX_expire |
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| created_at | TIMESTAMP | 创建时间 | |
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| updated_at | TIMESTAMP | 更新时间 | |
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-### 1.4 transaction_logs 物品变更日志表
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+### 1.5 item_groups 物品组表
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+| 字段 | 类型 | 说明 | 索引 |
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+|------|------|------|------|
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+| id | BIGINT | 物品组ID，主键 | PK |
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+| name | VARCHAR(100) | 物品组名称 | |
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+| type | ENUM('daily','weekly','event') | 物品组类型 | |
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+| created_at | TIMESTAMP | 创建时间 | |
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+| updated_at | TIMESTAMP | 更新时间 | |
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+
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+### 1.6 item_group_items 物品组内容表
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+| 字段 | 类型 | 说明 | 索引 |
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+|------|------|------|------|
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+| id | BIGINT | 记录ID，主键 | PK |
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+| group_id | BIGINT | 物品组ID | IDX_group |
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+| item_id | BIGINT | 物品ID | IDX_item |
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+| weight | SMALLINT | 权重 | |
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+| created_at | TIMESTAMP | 创建时间 | |
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+| updated_at | TIMESTAMP | 更新时间 | |
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+
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+### 1.7 transaction_logs 物品变更日志表
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| 字段 | 类型 | 说明 | 索引 |
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|------|------|------|------|
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| id | BIGINT | 日志ID，主键 | PK |
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| user_id | BIGINT | 用户ID | IDX_user |
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| item_id | BIGINT | 物品ID | IDX_item |
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+| instance_id | BIGINT | 物品实例ID | IDX_instance |
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| warehouse_id | BIGINT | 仓库ID | IDX_warehouse |
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| quantity | INT | 变动数量 | |
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| operation | ENUM('add','remove','transfer') | 操作类型 | |
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@@ -57,7 +86,11 @@
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erDiagram
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users ||--o{ warehouses : "1:N"
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warehouses ||--o{ user_items : "1:N"
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+ items ||--o{ item_instances : "1:N"
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items ||--o{ user_items : "1:N"
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+ items ||--o{ item_group_items : "1:N"
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+ item_groups ||--o{ item_group_items : "1:N"
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+ item_instances ||--o{ user_items : "1:1"
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user_items ||--o{ transaction_logs : "1:N"
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users {
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@@ -70,16 +103,30 @@ erDiagram
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items {
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BIGINT id PK
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}
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+ item_instances {
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+ BIGINT id PK
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+ BIGINT item_id FK
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+ }
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+ item_groups {
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+ BIGINT id PK
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+ }
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+ item_group_items {
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+ BIGINT id PK
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+ BIGINT group_id FK
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+ BIGINT item_id FK
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+ }
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user_items {
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BIGINT id PK
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BIGINT user_id FK
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BIGINT item_id FK
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+ BIGINT instance_id FK
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BIGINT warehouse_id FK
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}
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transaction_logs {
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BIGINT id PK
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BIGINT user_id FK
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BIGINT item_id FK
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+ BIGINT instance_id FK
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BIGINT warehouse_id FK
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}
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```
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@@ -104,7 +151,13 @@ CREATE INDEX idx_item_expire ON items(global_expire_at);
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CREATE INDEX idx_item_type ON items(type);
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```
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-### 3.3 用户物品表索引
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+### 3.3 物品实例表索引
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+```sql
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+-- 物品实例查询
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+CREATE INDEX idx_instance_item ON item_instances(item_id);
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+```
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+
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+### 3.4 用户物品表索引
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```sql
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-- 用户物品查询
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CREATE INDEX idx_user_item_user ON user_items(user_id);
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@@ -112,11 +165,24 @@ CREATE INDEX idx_user_item_user ON user_items(user_id);
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-- 仓库物品查询
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CREATE INDEX idx_user_item_warehouse ON user_items(warehouse_id);
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+-- 物品实例查询
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+CREATE INDEX idx_user_item_instance ON user_items(instance_id);
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+
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-- 过期物品管理
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CREATE INDEX idx_user_item_expire ON user_items(expire_at);
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```
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-### 3.4 事务日志表索引
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+### 3.5 物品组表索引
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+```sql
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+-- 物品组查询
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+CREATE INDEX idx_group_type ON item_groups(type);
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+
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+-- 物品组内容查询
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+CREATE INDEX idx_group_item_group ON item_group_items(group_id);
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+CREATE INDEX idx_group_item_item ON item_group_items(item_id);
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+```
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+
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+### 3.6 事务日志表索引
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```sql
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-- 用户操作历史
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CREATE INDEX idx_log_user_operation ON transaction_logs(user_id, operation);
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@@ -124,6 +190,9 @@ CREATE INDEX idx_log_user_operation ON transaction_logs(user_id, operation);
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-- 物品操作记录
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CREATE INDEX idx_log_item ON transaction_logs(item_id);
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+-- 物品实例操作记录
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+CREATE INDEX idx_log_instance ON transaction_logs(instance_id);
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+
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-- 时间范围查询
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CREATE INDEX idx_log_created ON transaction_logs(created_at);
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```
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@@ -166,13 +235,15 @@ GROUP BY w.id;
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### 4.4 查询物品变更历史
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```sql
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-SELECT
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+SELECT
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tl.operation,
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tl.quantity,
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tl.created_at,
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- i.name AS item_name
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+ i.name AS item_name,
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+ ii.attributes->>'$.quality' AS quality
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FROM transaction_logs tl
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JOIN items i ON tl.item_id = i.id
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+LEFT JOIN item_instances ii ON tl.instance_id = ii.id
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WHERE tl.user_id = 123
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AND tl.created_at BETWEEN '2023-01-01' AND '2023-12-31'
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ORDER BY tl.created_at DESC;
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