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Co-authored-by: Cursor <cursoragent@cursor.com>

docs/com-xsj33-data-imgration.md

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+
+# 公司名称：夏盛军商贸
+
+## mysql数据库配置信息
+
+host ip: 39.106.63.33
+datasource:
+    name: yangtangyoupin
+    username: yangtangyoupin
+    password: 5Fn8eWrbYFtAhCZw
+
+## 数据删除任务
+
+- 用户数据范围暨**用户id集**：wa_users表中的用户id集
+- 查询wa_withdraw表中用户id不在用户数据范围内的记录，并写一个删除这些数据的sql
+
+### 1) 查询核对 SQL
+
+```sql
+-- 统计孤立提现记录数
+SELECT COUNT(*) AS orphan_cnt
+FROM wa_withdraw w
+WHERE NOT EXISTS (
+  SELECT 1 FROM wa_users u WHERE u.id = w.user_id
+);
+
+-- 抽样查看前 100 条，核对是否确实需要清理
+SELECT w.*
+FROM wa_withdraw w
+WHERE NOT EXISTS (
+  SELECT 1 FROM wa_users u WHERE u.id = w.user_id
+)
+ORDER BY w.id
+LIMIT 100;
+```
+
+### 2) 删除 SQL
+
+```sql
+DELETE w FROM wa_withdraw w
+WHERE NOT EXISTS (
+  SELECT 1 FROM wa_users u WHERE u.id = w.user_id
+);
+```
+
+### 3) 操作备注
+
+- 建议在执行前对 wa_withdraw 做一次备份：`CREATE TABLE wa_withdraw_bak_20260423 AS SELECT * FROM wa_withdraw;`
+- 建议先跑 `COUNT(*)` 与 `LIMIT 100` 人工核对，再执行 `DELETE`
+- 全程放入事务中执行，确认无误后再 `COMMIT`
+
+
+## 相关文件
+
+