fix: migration 加唯一约束前自动去重，补充部署清理脚本

products/migrations/0005_duoci_fenhong_club_id.py

@@ -1,4 +1,18 @@
 from django.db import migrations, models
+from django.db.models import Max
+
+
+def _dedupe_duoci_fenhong(apps, schema_editor):
+    DuociFenhong = apps.get_model('products', 'DuociFenhong')
+    for row in DuociFenhong.objects.values(
+        'club_id', 'huiyuan', 'yonghuid', 'cishu',
+    ).annotate(max_id=Max('id')):
+        DuociFenhong.objects.filter(
+            club_id=row['club_id'],
+            huiyuan=row['huiyuan'],
+            yonghuid=row['yonghuid'],
+            cishu=row['cishu'],
+        ).exclude(id=row['max_id']).delete()
 
 
 class Migration(migrations.Migration):
@@ -13,6 +27,7 @@ class Migration(migrations.Migration):
             name='club_id',
             field=models.CharField(db_index=True, default='xq', max_length=16, verbose_name='所属俱乐部'),
         ),
+        migrations.RunPython(_dedupe_duoci_fenhong, migrations.RunPython.noop),
         migrations.AlterUniqueTogether(
             name='duocifenhong',
             unique_together={('club_id', 'huiyuan', 'yonghuid', 'cishu')},