在前后端开发联调前 的提交20260223
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# 设计文档
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## 概述
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本设计覆盖 v8 联调中 4 个"临时止血"修复的深度方案,按优先级排列:
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1. **需求 D(P0)**:`DwdLoadTask.load()` 返回值格式规范化
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2. **需求 C1(P1)**:会员生日字段 ETL 链路补齐
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3. **需求 B(P1)**:多门店会员查询支持
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4. **需求 A(P2)**:助教月度聚合按档位分段统计
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5. **需求 C2(P2)**:助教手动补录会员生日
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设计原则:
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- 每个需求独立可部署,按优先级逐步实施
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- DDL 变更通过迁移脚本执行,支持回滚
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- 保持现有 ETL 架构(BaseTask E/T/L 模板)不变
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## 架构
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整体架构不变,变更集中在以下层面:
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```mermaid
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graph TD
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subgraph "需求 D: 返回值规范化"
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D1[DwdLoadTask.load] -->|errors: int| D2[BaseTask._accumulate_counts]
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D2 -->|sum| D3[FlowRunner._safe_int]
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end
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subgraph "需求 A: 档位分段统计"
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A1[dws_assistant_daily_detail] -->|GROUP BY level_code| A2[AssistantMonthlyTask]
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A2 -->|多行/档位| A3[dws_assistant_monthly_summary]
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A3 --> A4[AssistantSalaryTask 分段计算]
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end
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subgraph "需求 B: 多门店会员查询"
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B1[dwd.事实表] -->|member_id IN| B2[dim_member]
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B2 --> B3[DWS 任务]
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end
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subgraph "需求 C: 生日字段"
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C1[ODS payload] -->|birthday 提取| C2[dim_member.birthday]
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C3[后端 API] -->|UPSERT| C4[zqyy_app.member_birthday_manual]
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C2 --> C5[DWS 任务: COALESCE]
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C4 -->|FDW 只读| C5
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end
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```
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## 组件与接口
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### 需求 D:返回值格式规范化
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**变更文件:**
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- `apps/etl/connectors/feiqiu/tasks/dwd/dwd_load_task.py`
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- `apps/etl/connectors/feiqiu/tasks/base_task.py`
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**DwdLoadTask.load() 返回值变更:**
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```python
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# 变更前
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return {"tables": summary, "errors": errors}
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# errors: list[dict],如 [{"table": "dim_assistant_ex", "error": "..."}]
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# 变更后
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return {
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"tables": summary,
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"errors": len(errors), # int — 与其他任务一致
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"error_details": errors, # list[dict] — 保留详情供日志使用
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}
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```
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**BaseTask._accumulate_counts() 防御层增强:**
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```python
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@staticmethod
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def _accumulate_counts(total: dict, current: dict) -> dict:
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for key, value in (current or {}).items():
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if isinstance(value, (int, float)):
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total[key] = (total.get(key) or 0) + value
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elif isinstance(value, list):
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# 防御层:list 类型转为 len() 累加
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total[key] = (total.get(key) or 0) + len(value)
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else:
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total.setdefault(key, value)
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return total
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```
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**FlowRunner._safe_int() 保留不变**,作为最终防御层。
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### 需求 A:助教月度聚合按档位分段统计
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**DDL 变更:**
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```sql
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-- 迁移脚本:删除旧唯一约束,创建新约束
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ALTER TABLE dws.dws_assistant_monthly_summary
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DROP CONSTRAINT IF EXISTS uk_dws_assistant_monthly;
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ALTER TABLE dws.dws_assistant_monthly_summary
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ADD CONSTRAINT uk_dws_assistant_monthly
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UNIQUE (site_id, assistant_id, stat_month, assistant_level_code);
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```
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**AssistantMonthlyTask._extract_daily_aggregates() 变更:**
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```sql
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-- 变更前:GROUP BY assistant_id, DATE_TRUNC('month', stat_date)
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-- 变更后:加入 assistant_level_code 分组
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SELECT
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assistant_id,
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assistant_level_code,
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assistant_level_name,
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-- nickname 取时间最后一条
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(ARRAY_AGG(assistant_nickname ORDER BY stat_date DESC))[1] AS assistant_nickname,
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DATE_TRUNC('month', stat_date)::DATE AS stat_month,
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COUNT(DISTINCT stat_date) AS work_days,
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SUM(total_service_count) AS total_service_count,
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-- ... 其余聚合字段不变
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FROM dws.dws_assistant_daily_detail
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WHERE site_id = %s AND ({month_where})
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GROUP BY assistant_id, assistant_level_code, assistant_level_name,
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DATE_TRUNC('month', stat_date)
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```
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**AssistantSalaryTask 适配:**
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- `_extract_monthly_summary()` 返回多行(同一助教不同档位)
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- `transform()` 遍历每行分别计算工资,按档位使用对应的 `level_price` 和 `tier`
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- 最终每个 `(assistant_id, stat_month, assistant_level_code)` 生成一条工资记录
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**AssistantFinanceTask._extract_daily_revenue() nickname 修复:**
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```sql
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-- 变更前:MAX(s.nickname) AS assistant_nickname
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-- 变更后:
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(ARRAY_AGG(s.nickname ORDER BY s.start_use_time DESC))[1] AS assistant_nickname
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```
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**AssistantCustomerTask._extract_service_pairs() nickname 修复:**
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```sql
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-- 变更前:MAX(assistant_nickname) AS assistant_nickname
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-- 变更后:
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(ARRAY_AGG(assistant_nickname ORDER BY service_date DESC))[1] AS assistant_nickname
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```
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### 需求 B:多门店会员查询支持
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**变更模式:** 所有 `_extract_member_info(site_id)` 方法的 SQL 从:
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```sql
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WHERE register_site_id = %s AND scd2_is_current = 1
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```
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改为通过事实表反查:
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```sql
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WHERE member_id IN (
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SELECT DISTINCT tenant_member_id
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FROM dwd.{事实表}
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WHERE site_id = %s AND tenant_member_id IS NOT NULL AND tenant_member_id != 0
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) AND scd2_is_current = 1
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```
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**受影响的任务和对应事实表:**
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| 任务 | 方法 | 事实表 |
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|------|------|--------|
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| `member_visit_task.py` | `_extract_member_info` | `dwd_settlement_head` |
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| `member_consumption_task.py` | `_extract_member_info` | `dwd_settlement_head` |
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| `assistant_customer_task.py` | `_extract_member_info` | `dwd_assistant_service_log` |
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**`dim_member_card_account` 的处理:**
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- `member_consumption_task.py` 和 `finance_recharge_task.py` 中对 `dim_member_card_account` 的查询也使用 `register_site_id`
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- 同样改为通过事实表的 `tenant_member_id` 反查:
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```sql
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WHERE tenant_member_id IN (
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SELECT DISTINCT tenant_member_id
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FROM dwd.{事实表}
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WHERE site_id = %s AND tenant_member_id IS NOT NULL AND tenant_member_id != 0
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) AND scd2_is_current = 1
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```
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### 需求 C1:会员生日字段 ETL 链路补齐
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**DDL 变更:**
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```sql
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-- dim_member 加列
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ALTER TABLE dwd.dim_member ADD COLUMN IF NOT EXISTS birthday DATE;
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COMMENT ON COLUMN dwd.dim_member.birthday IS '会员生日,来源:ODS member_profiles payload 中的 birthday 字段';
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```
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**ODS → DWD 装载:**
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- `DwdLoadTask` 的列映射是自动的(通过 `_get_columns()` 读取 DWD 表列名,与 ODS 列名匹配)
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- ODS `member_profiles` 表没有 `birthday` 列,但 `payload` JSONB 中可能包含
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- 需要在 `_build_column_mapping()` 或 `_fetch_source_rows()` 中增加从 `payload` 提取 `birthday` 的逻辑
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- 方案:在 ODS 表也加 `birthday` 列(保持 ODS 与 API 字段对齐),ODS 入库时从 JSON 提取
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```sql
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-- ODS member_profiles 加列
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ALTER TABLE ods.member_profiles ADD COLUMN IF NOT EXISTS birthday DATE;
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```
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ODS 入库逻辑(`ods_tasks.py`)已有从 JSON 提取字段的机制,新增 `birthday` 字段映射即可。DwdLoadTask 的自动列匹配会自动将 `ods.member_profiles.birthday` 映射到 `dwd.dim_member.birthday`。
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**SCD2 处理:**
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- `birthday` 作为 `dim_member` 的普通维度列,SCD2 变化检测会自动包含
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- 当 API 返回的 birthday 值变化时,会触发 SCD2 版本更新
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**DWS 任务恢复 birthday 引用:**
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- `member_visit_task.py` 的 `_extract_member_info()` SQL 中加入 `birthday`
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- `member_consumption_task.py` 同理
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### 需求 C2:助教手动补录会员生日
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**DDL(`zqyy_app` / `test_zqyy_app` 业务库):**
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```sql
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CREATE TABLE IF NOT EXISTS member_birthday_manual (
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id BIGSERIAL PRIMARY KEY,
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member_id BIGINT NOT NULL,
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birthday_value DATE NOT NULL,
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recorded_by_assistant_id BIGINT,
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recorded_by_name VARCHAR(50),
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recorded_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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source VARCHAR(20) DEFAULT 'assistant',
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CONSTRAINT uk_member_birthday_manual
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UNIQUE (member_id, recorded_by_assistant_id)
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);
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COMMENT ON TABLE member_birthday_manual IS '助教手动补录的会员生日信息';
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CREATE INDEX idx_mbd_member ON member_birthday_manual (member_id);
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```
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**FDW 映射(ETL 库读取业务库数据):**
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当前 FDW 方向是 `zqyy_app` → `etl_feiqiu`(业务库读 ETL 数据)。需求 C2 需要反向:ETL DWS 任务读取业务库的手动补录表。
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方案:在 `etl_feiqiu` 库中创建指向 `zqyy_app` 的 FDW 外部表:
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```sql
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-- 在 etl_feiqiu 中执行
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CREATE SERVER IF NOT EXISTS zqyy_app_server
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FOREIGN DATA WRAPPER postgres_fdw
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OPTIONS (host 'localhost', dbname 'zqyy_app', port '5432');
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CREATE USER MAPPING IF NOT EXISTS FOR etl_user
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SERVER zqyy_app_server
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OPTIONS (user 'app_reader', password '***');
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CREATE SCHEMA IF NOT EXISTS fdw_app;
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CREATE FOREIGN TABLE fdw_app.member_birthday_manual (
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id BIGINT,
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member_id BIGINT,
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birthday_value DATE,
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recorded_by_assistant_id BIGINT,
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recorded_by_name VARCHAR(50),
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recorded_at TIMESTAMPTZ,
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source VARCHAR(20)
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) SERVER zqyy_app_server
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OPTIONS (schema_name 'public', table_name 'member_birthday_manual');
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```
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**DWS 任务生日读取逻辑:**
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```sql
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-- 优先手动补录值,其次 API 值
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COALESCE(
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(SELECT birthday_value
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FROM fdw_app.member_birthday_manual
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WHERE member_id = m.member_id
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ORDER BY recorded_at ASC -- 最早提交优先
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LIMIT 1),
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m.birthday
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) AS member_birthday
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```
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**后端 API:**
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```python
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# apps/backend/app/routers/member_birthday.py
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@router.post("/member-birthday")
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async def submit_member_birthday(
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member_id: int,
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birthday_value: date,
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assistant_id: int,
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assistant_name: str,
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db=Depends(get_db),
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):
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"""助教提交会员生日(UPSERT)"""
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sql = """
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INSERT INTO member_birthday_manual
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(member_id, birthday_value, recorded_by_assistant_id, recorded_by_name)
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VALUES (%s, %s, %s, %s)
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ON CONFLICT (member_id, recorded_by_assistant_id)
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DO UPDATE SET
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birthday_value = EXCLUDED.birthday_value,
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recorded_at = NOW()
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"""
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db.execute(sql, (member_id, birthday_value, assistant_id, assistant_name))
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return {"status": "ok"}
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```
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## 数据模型
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### 变更汇总
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| 库 | 表 | 变更类型 | 说明 |
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|----|-----|---------|------|
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| `etl_feiqiu` | `ods.member_profiles` | 加列 | `birthday DATE` |
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| `etl_feiqiu` | `dwd.dim_member` | 加列 | `birthday DATE` |
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| `etl_feiqiu` | `dws.dws_assistant_monthly_summary` | 改约束 | UK 加入 `assistant_level_code` |
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| `zqyy_app` | `member_birthday_manual` | 新建表 | 手动补录生日 |
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| `etl_feiqiu` | `fdw_app.member_birthday_manual` | 新建外部表 | FDW 映射 |
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### 迁移脚本清单
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按优先级排序,每个迁移脚本独立可执行:
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1. `2026-02-22__D_dwd_load_return_format.sql` — 无 DDL(纯代码变更)
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2. `2026-02-22__C1_dim_member_add_birthday.sql` — ODS/DWD 加列
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3. `2026-02-22__B_no_ddl_code_only.sql` — 无 DDL(纯代码变更)
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4. `2026-02-22__A_monthly_summary_uk_change.sql` — 唯一约束变更
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5. `2026-02-22__C2_member_birthday_manual.sql` — 新建表 + FDW
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## 正确性属性
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*属性(Property)是系统在所有合法执行中都应保持为真的特征或行为——本质上是对"系统应该做什么"的形式化陈述。属性是连接人类可读规格说明与机器可验证正确性保证之间的桥梁。*
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### Property 1: DwdLoadTask 返回值格式一致性
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*对于任意* DwdLoadTask.load() 的执行结果,返回字典中 `errors` 键的值应为 `int` 类型,且等于 `error_details` 列表的长度。
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**验证: 需求 1.1**
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### Property 2: _accumulate_counts 类型安全累加
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*对于任意* 包含 `int`、`float`、`list` 类型值的计数字典,`_accumulate_counts()` 应将 `int`/`float` 直接累加,将 `list` 转为 `len()` 后累加,且不抛出异常。
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**验证: 需求 1.2**
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### Property 3: 档位分段聚合正确性
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*对于任意* 助教在同一月内存在 N 个不同 `assistant_level_code` 的日度数据,`_extract_daily_aggregates()` 应返回恰好 N 行记录,每行的业绩指标之和应等于该助教该月的总业绩。
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**验证: 需求 2.1**
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### Property 4: nickname 按时间倒序取值
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*对于任意* 助教在聚合周期内有多条不同 nickname 的记录,聚合结果中的 nickname 应等于时间最晚的那条记录的 nickname。此属性适用于 AssistantMonthlyTask、AssistantFinanceTask、AssistantCustomerTask 三个任务。
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**验证: 需求 2.3, 2.5, 2.6**
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### Property 5: 工资按档位分段计算
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*对于任意* 助教在同一月有多个档位的月度汇总记录,AssistantSalaryTask 应为每个档位分别计算工资,每个档位使用对应的 `level_price` 和 `tier` 配置,且所有档位的工资记录数等于月度汇总的行数。
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**验证: 需求 2.4**
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### Property 6: 跨店会员可查
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*对于任意* 在 A 店注册但在 B 店有消费记录的会员,B 店的 DWS 任务通过事实表反查 `dim_member` 时,应能获取到该会员的维度信息(nickname、mobile 等)。
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**验证: 需求 3.1, 3.2**
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### Property 7: birthday ODS→DWD 装载正确性
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*对于任意* ODS `member_profiles` 中包含 `birthday` 值的记录,DwdLoadTask 装载后 `dwd.dim_member` 中对应记录的 `birthday` 应与 ODS 源值一致。
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||||
**验证: 需求 4.2**
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### Property 8: birthday SCD2 变化检测
|
||||
|
||||
*对于任意* `dim_member` 现有记录,当 ODS 中同一会员的 `birthday` 值发生变化时,SCD2 应关闭旧版本并创建新版本,新版本的 `birthday` 等于新值。
|
||||
|
||||
**验证: 需求 4.3**
|
||||
|
||||
### Property 9: 生日 UPSERT 幂等性
|
||||
|
||||
*对于任意* `(member_id, assistant_id)` 组合,连续两次提交不同的 `birthday_value`,`member_birthday_manual` 表中该组合应只有一条记录,且 `birthday_value` 等于最后一次提交的值。
|
||||
|
||||
**验证: 需求 5.2, 5.5**
|
||||
|
||||
### Property 10: 手动补录优先于 API 来源
|
||||
|
||||
*对于任意* 同时在 `dim_member.birthday` 和 `member_birthday_manual` 中有值的会员,DWS 任务输出的 `member_birthday` 应等于手动补录表中的值。
|
||||
|
||||
**验证: 需求 5.4**
|
||||
|
||||
### Property 11: SCD2 更新不影响手动补录表
|
||||
|
||||
*对于任意* 在 `member_birthday_manual` 中有记录的会员,执行 DwdLoadTask SCD2 更新 `dim_member.birthday` 后,`member_birthday_manual` 中的记录应保持不变。
|
||||
|
||||
**验证: 需求 5.6**
|
||||
|
||||
## 错误处理
|
||||
|
||||
### 需求 D:返回值格式
|
||||
|
||||
- `DwdLoadTask.load()` 中单表装载失败时,错误信息追加到 `error_details` 列表,`errors` 计数递增
|
||||
- `_accumulate_counts()` 遇到未知类型时使用 `setdefault` 保留原值(现有行为不变)
|
||||
- `_safe_int()` 遇到非 int/list 类型时返回 0(现有行为不变)
|
||||
|
||||
### 需求 A:档位分段
|
||||
|
||||
- 助教在某月无任何服务记录时,不生成月度汇总行(现有行为不变)
|
||||
- `assistant_level_code` 为 NULL 时,作为独立分组处理(NULL 视为一个档位)
|
||||
- 唯一约束变更后,需要清理旧数据(DELETE + 重新计算当月数据)
|
||||
|
||||
### 需求 B:多门店查询
|
||||
|
||||
- 事实表中无该门店消费记录时,`_extract_member_info()` 返回空字典(现有行为不变)
|
||||
- 子查询返回空集时,`WHERE member_id IN (空集)` 等价于 `WHERE FALSE`,不会报错
|
||||
|
||||
### 需求 C1:生日字段
|
||||
|
||||
- ODS 中 `birthday` 为 NULL 或空字符串时,DWD 中存为 NULL
|
||||
- 无效日期格式时,DwdLoadTask 的现有类型转换逻辑会将其置为 NULL
|
||||
|
||||
### 需求 C2:手动补录
|
||||
|
||||
- `member_id` 不存在于 `dim_member` 时,仍允许提交(助教可能先于 ETL 发现新客户)
|
||||
- `birthday_value` 格式校验由后端 API 的 Pydantic schema 处理
|
||||
- FDW 连接失败时,DWS 任务应 catch 异常并降级为仅使用 `dim_member.birthday`
|
||||
|
||||
## 测试策略
|
||||
|
||||
### 测试框架
|
||||
|
||||
- 属性测试:`hypothesis`(Python),每个属性测试最少 100 次迭代
|
||||
- 单元测试:`pytest`
|
||||
- 测试工具:`apps/etl/connectors/feiqiu/tests/unit/task_test_utils.py` 提供 FakeDB/FakeAPI
|
||||
|
||||
### 属性测试
|
||||
|
||||
每个正确性属性对应一个 hypothesis 属性测试,标注格式:
|
||||
|
||||
```python
|
||||
# Feature: etl-aggregation-fix, Property N: {property_text}
|
||||
@given(...)
|
||||
def test_property_N_xxx(data):
|
||||
...
|
||||
```
|
||||
|
||||
属性测试放置位置:
|
||||
- 需求 D 相关(Property 1-2):`apps/etl/connectors/feiqiu/tests/unit/test_return_format_properties.py`
|
||||
- 需求 A 相关(Property 3-5):`apps/etl/connectors/feiqiu/tests/unit/test_monthly_aggregation_properties.py`
|
||||
- 需求 B 相关(Property 6):`apps/etl/connectors/feiqiu/tests/unit/test_multi_store_properties.py`
|
||||
- 需求 C 相关(Property 7-11):`apps/etl/connectors/feiqiu/tests/unit/test_birthday_properties.py`
|
||||
|
||||
### 单元测试
|
||||
|
||||
单元测试覆盖具体示例和边界情况:
|
||||
- DDL 结构验证(唯一约束、列存在性)
|
||||
- 空数据 / NULL 值边界
|
||||
- 迁移脚本的回滚验证
|
||||
|
||||
### 测试环境
|
||||
|
||||
- 数据库:`test_etl_feiqiu` / `test_zqyy_app`(通过 `TEST_DB_DSN` 环境变量)
|
||||
- 纯单元测试使用 FakeDB/FakeAPI,不涉及真实数据库连接
|
||||
- ETL 测试 cwd:`apps/etl/connectors/feiqiu/`
|
||||
- 后端测试 cwd:`apps/backend/`
|
||||
Reference in New Issue
Block a user