56 lines
1.2 KiB
Markdown
56 lines
1.2 KiB
Markdown
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# 公司名称：夏盛军商贸
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## mysql数据库配置信息
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host ip: 39.106.63.33
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datasource:
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name: yangtangyoupin
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username: yangtangyoupin
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password: 5Fn8eWrbYFtAhCZw
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## 数据删除任务
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- 用户数据范围暨**用户id集**：wa_users表中的用户id集
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- 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
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### 1) 查询核对 SQL
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```sql
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-- 统计孤立提现记录数
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SELECT COUNT(*) AS orphan_cnt
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FROM wa_withdraw w
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WHERE NOT EXISTS (
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SELECT 1 FROM wa_users u WHERE u.id = w.user_id
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);
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-- 抽样查看前 100 条，核对是否确实需要清理
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SELECT w.*
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FROM wa_withdraw w
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WHERE NOT EXISTS (
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SELECT 1 FROM wa_users u WHERE u.id = w.user_id
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)
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ORDER BY w.id
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LIMIT 100;
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```
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### 2) 删除 SQL
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```sql
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DELETE w FROM wa_withdraw w
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WHERE NOT EXISTS (
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SELECT 1 FROM wa_users u WHERE u.id = w.user_id
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);
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```
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### 3) 操作备注
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- 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;`
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- 建议先跑 `COUNT(*)` 与 `LIMIT 100` 人工核对，再执行 `DELETE`
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- 全程放入事务中执行，确认无误后再 `COMMIT`
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## 相关文件
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