微信小程序页面迁移校验之前 P5任务处理之前
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docs/database/BD_Manual_20260301_cleanup_and_fixes.md
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docs/database/BD_Manual_20260301_cleanup_and_fixes.md
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# BD 手册:assistant_trash_event 清理 + ODS_STORE_GOODS_SALES 修复 + dim_staff_ex 修复 + DWS 精度扩展 + ODS 库存 siteid 注入
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> 日期:2026-03-01
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> Prompt 摘要:清理 assistant_trash_event 残留代码/DDL 文档;修复 ODS_STORE_GOODS_SALES 窗口配置以恢复商品销售数据拉取;修复 dim_staff_ex FACT_MAPPINGS 列名映射错误;DWS 层 7 个 ratio/margin 字段 numeric 精度扩展(P1);ODS goods_stock_summary 加 siteid 列 + DWD 映射补全(P2)
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> 直接原因:联调发现的 P1/P2 问题 + 三个独立问题的批量修复
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---
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## 一、变更说明
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### 1.1 assistant_trash_event 残留清理
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表 `dwd.dwd_assistant_trash_event` 和 `dwd.dwd_assistant_trash_event_ex` 已于 2026-02-22 DROP,
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上游 ODS 表 `ods.assistant_cancellation_records` 同步 DROP。本次清理残留的代码引用和 DDL 文档。
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**DDL 文档删除项:**
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| 文件 | 删除内容 |
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|------|---------|
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| `etl_feiqiu__ods.sql` | PK 约束 `assistant_cancellation_records_pkey`,索引 `idx_assistant_cancellation_records_fetched_at_*`(2 条) |
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| `etl_feiqiu__dwd.sql` | PK 约束 `dwd_assistant_trash_event_pkey`、`dwd_assistant_trash_event_ex_pkey`,索引 `idx_dwd_assistant_trash_event_*`(2 条) |
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| `dwd-amount-duration-calibration.md` | 章节 2.11(助教废除事件主表)、存疑字段 #15、数据新鲜度行 |
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**代码删除项(前序已完成):**
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- `utils/json_store.py` — API 路径映射
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- `tasks/utility/manual_ingest_task.py` — FILE_MAPPING / TABLE_SPECS
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- `quality/consistency_checker.py` — ODS_TABLE_TO_JSON_FILE / ODS_TABLE_TO_TASK_CODE
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- `scripts/refresh_json_and_audit.py` — ACTUAL_LIST_KEY
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- `scripts/run_compare_v3.py` / `run_compare_v3_fixed.py` — TABLES 列表
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### 1.2 ODS_STORE_GOODS_SALES 窗口配置修复
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**问题:** `ods_tasks.py` 中 `ODS_STORE_GOODS_SALES` 的 `requires_window=False`,导致 API `/TenantGoods/GetGoodsSalesList` 不传 `startTime/endTime` 参数,始终返回 0 条记录。
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**修复:**
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- `requires_window` → `True`
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- 新增 `time_fields=("startTime", "endTime")`
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**数据恢复:** 以 30 天窗口切分,回填 2025-07-07 ~ 2026-03-01,ODS 新增 26,759 条,DWD 层 `dwd_store_goods_sale` 从 17,563 → 26,759 条,时间范围延伸至 2026-02-25。
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### 1.3 dim_staff_ex FACT_MAPPINGS 列名修复
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**问题:** `dwd_load_task.py` 中 `dim_staff_ex` 的 FACT_MAPPINGS 使用驼峰列名(`cashierpointid`、`groupid` 等),但 ODS 表 `staff_info_master` 实际列名为下划线风格(`cashier_point_id`、`group_id` 等),导致 SCD2 合并 SQL 执行报错,整表被跳过。
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**修复映射:**
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| DWD 列 | 修复前(错误) | 修复后(正确) |
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|--------|---------------|---------------|
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| `cashier_point_id` | `cashierpointid` | `cashier_point_id` |
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| `cashier_point_name` | `cashierpointname` | `cashier_point_name` |
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| `group_id` | `groupid` | `group_id` |
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| `group_name` | `groupname` | `group_name` |
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| `system_user_id` | `systemuserid` | `system_user_id` |
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| `tenant_org_id` | `tenantorgid` | `tenant_org_id` |
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| `user_roles` | `userroles` | `user_roles` |
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**数据恢复:** DWD 装载后 `dim_staff_ex` 从 0 行 → 15 行。
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### 1.4 [P1] DWS 层 numeric 精度扩展(举一反三)
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**问题:** `dws.dws_assistant_finance_analysis.gross_margin` 定义为 `numeric(5,4)`,只能存 ±0.9999。当 `cost_daily > revenue_total`(亏损场景),`gross_margin = gross_profit / revenue_total` 可能 < -1,导致 INSERT 溢出报错。举一反三排查发现 7 个同类风险字段。
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**修复:**
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| 表 | 字段 | 修复前 | 修复后 |
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|----|------|--------|--------|
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| `dws.cfg_performance_tier` | `bonus_deduction_ratio` | `numeric(5,4)` | `numeric(7,4)` |
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| `dws.dws_assistant_finance_analysis` | `gross_margin` | `numeric(5,4)` | `numeric(7,4)` |
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| `dws.dws_assistant_recharge_commission` | `commission_ratio` | `numeric(5,4)` | `numeric(7,4)` |
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| `dws.dws_assistant_salary_calc` | `bonus_deduction_ratio` | `numeric(5,4)` | `numeric(7,4)` |
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| `dws.dws_finance_discount_detail` | `discount_ratio` | `numeric(5,4)` | `numeric(7,4)` |
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| `dws.dws_finance_income_structure` | `income_ratio` | `numeric(5,4)` | `numeric(7,4)` |
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| `dws.dws_member_assistant_intimacy` | `burst_multiplier` | `numeric(6,4)` | `numeric(7,4)` |
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**依赖视图处理:** 7 个 `app.v_dws_*` RLS 视图先 DROP 再重建。
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**Python 防御:** `assistant_finance_task.py` 中 `gross_margin` 计算加 clamp 到 ±999.9999。
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**迁移脚本:** `db/etl_feiqiu/migrations/20260301_dws_numeric_precision_fix.sql`
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### 1.5 [P2] ODS goods_stock_summary 加 siteid + DWD 映射补全
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**问题:** `dwd.dwd_goods_stock_summary` DDL 定义了 `site_id bigint` 和 `tenant_id bigint`,但 FACT_MAPPINGS 缺少映射,导致 DWD 层 site_id 始终为 NULL。
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**根因分析:**
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- API `GetGoodsStockReport` 返回的记录不含 `siteId`/`tenantId`(已从 JSON 缓存确认)
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- ODS 表 `ods.goods_stock_summary` 也没有 `siteid` 列
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- 请求参数中有 `siteId`,但 ODS 入库时未注入到记录中
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**修复(三层联动):**
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1. ODS 表加列:`ALTER TABLE ods.goods_stock_summary ADD COLUMN siteid bigint`
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2. ODS 入库通用注入:`_insert_records_schema_aware` 中,当 ODS 表有 `siteid` 列但记录不含时,从 `app.store_id` 配置注入
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3. DWD FACT_MAPPINGS 补映射:`("site_id", '"siteid"', "bigint")`
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4. 已有数据回填:从 `ods.goods_stock_movements` 推断 siteid 回填 3216 条
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**迁移脚本:** `db/etl_feiqiu/migrations/20260301_ods_goods_stock_summary_add_siteid.sql`
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---
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## 二、兼容性影响
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| 子系统 | 影响 |
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|--------|------|
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| ETL | `assistant_trash_event` 相关任务已无代码引用,无影响;`ODS_STORE_GOODS_SALES` 恢复正常窗口拉取;`dim_staff_ex` 恢复正常 SCD2 装载;DWS ratio 字段精度扩展后不再溢出;ODS 库存汇总入库时自动注入 siteid |
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| 后端 API | 7 个 `app.v_dws_*` RLS 视图已重建,字段类型从 numeric(5,4) 变为 numeric(7,4),API 返回值精度不变(仍为 4 位小数),无破坏性影响 |
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| 小程序 | 无影响 |
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| 管理后台 | 商品销售相关报表数据将恢复完整;库存汇总将携带 site_id |
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---
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## 三、回滚策略
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### 3.1 assistant_trash_event
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纯文档清理,无需回滚。如需恢复,从 git 历史还原对应行即可。
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### 3.2 ODS_STORE_GOODS_SALES
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```python
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# 回滚 ods_tasks.py:
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requires_window=True → requires_window=False
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# 删除 time_fields=("startTime", "endTime") 行
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```
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### 3.3 dim_staff_ex
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```python
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# 回滚 dwd_load_task.py FACT_MAPPINGS:
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("cashier_point_id", "cashier_point_id", "bigint") → ("cashier_point_id", "cashierpointid", "bigint")
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# 其余 6 个字段同理恢复驼峰写法
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```
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如需清空已装载数据:`TRUNCATE dwd.dim_staff_ex;`
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### 3.4 [P1] DWS numeric 精度
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```sql
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-- 回滚脚本:db/etl_feiqiu/migrations/20260301_dws_numeric_precision_fix_rollback.sql
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-- 注意:如果已有数据超出原精度范围(如 gross_margin > 0.9999),回滚会失败
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-- 需先清理超范围数据:
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UPDATE dws.dws_assistant_finance_analysis SET gross_margin = LEAST(0.9999, GREATEST(-0.9999, gross_margin));
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-- 然后执行回滚(同样需要先 DROP 再重建视图)
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```
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Python 回滚:删除 `assistant_finance_task.py` 中的 clamp 行。
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### 3.5 [P2] ODS siteid 列
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```sql
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-- ODS 列不可逆删除(已有数据依赖),但可置 NULL:
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UPDATE ods.goods_stock_summary SET siteid = NULL;
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-- DWD FACT_MAPPINGS 回滚:删除 ("site_id", '"siteid"', "bigint") 行
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-- ODS 入库注入回滚:删除 ods_tasks.py 中 "通用 siteid 注入" 代码块
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```
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---
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## 四、验证 SQL
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```sql
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-- 1. 确认 assistant_trash_event 表已不存在
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SELECT count(*) FROM information_schema.tables
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WHERE table_schema = 'dwd' AND table_name LIKE '%assistant_trash_event%';
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-- 预期:0
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-- 2. 确认 ODS 商品销售数据已回填
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SELECT count(*) as cnt, min(create_time) as min_time, max(create_time) as max_time
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FROM ods.store_goods_sales_records WHERE fetched_at IS NOT NULL;
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-- 预期:cnt > 40000, max_time >= 2026-02-25
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-- 3. 确认 DWD 商品销售数据已更新
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SELECT count(*) as cnt, max(create_time) as max_time FROM dwd.dwd_store_goods_sale;
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-- 预期:cnt > 25000, max_time >= 2026-02-25
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-- 4. 确认 dim_staff_ex 已有数据
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SELECT count(*) as cnt FROM dwd.dim_staff_ex WHERE scd2_is_current = 1;
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-- 预期:cnt = 15(与 dim_staff 一致)
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-- 5. 确认 dim_staff_ex 关键字段非全 NULL
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SELECT count(*) as has_system_user FROM dwd.dim_staff_ex
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WHERE scd2_is_current = 1 AND system_user_id IS NOT NULL;
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-- 预期:> 0
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-- 6. [P1] 确认 DWS ratio 字段精度已扩展
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SELECT table_name, column_name, numeric_precision, numeric_scale
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FROM information_schema.columns
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WHERE table_schema = 'dws'
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AND column_name IN ('gross_margin', 'bonus_deduction_ratio', 'commission_ratio',
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'discount_ratio', 'income_ratio', 'burst_multiplier')
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ORDER BY table_name;
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-- 预期:所有行 numeric_precision=7, numeric_scale=4
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-- 7. [P1] 确认 RLS 视图已重建
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SELECT table_schema || '.' || table_name FROM information_schema.views
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WHERE table_schema = 'app'
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AND table_name IN ('v_cfg_performance_tier', 'v_dws_assistant_finance_analysis',
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'v_dws_assistant_recharge_commission', 'v_dws_assistant_salary_calc',
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'v_dws_finance_discount_detail', 'v_dws_finance_income_structure',
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'v_dws_member_assistant_intimacy');
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-- 预期:7 行
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-- 8. [P2] 确认 ODS goods_stock_summary 有 siteid 列且已回填
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SELECT count(*) as total, count(siteid) as filled, count(DISTINCT siteid) as distinct_sites
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FROM ods.goods_stock_summary;
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-- 预期:filled = total, distinct_sites = 1
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-- 9. [P2] 确认 DWD FACT_MAPPINGS 生效(下次 DWD_LOAD 后验证)
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SELECT count(*) as has_site_id FROM dwd.dwd_goods_stock_summary WHERE site_id IS NOT NULL;
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-- 预期:下次 ETL 运行后 > 0(当前可能仍为 0,需重跑 DWD_LOAD)
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```
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