probably working reply_to constraint migration, but doesn't work on sqlite3

Author: VeryBigSad

chats/migrations/0003_reply_to_constaint.py

@@ -0,0 +1,27 @@
+# Generated by Django 4.1.3 on 2023-02-08 12:55
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("chats", "0002_directchatmessage_is_deleted_and_more"),
+    ]
+
+    operations = [
+        # migrations.RunSQL(
+        #     sql="""
+        #     ALTER TABLE chats_directchatmessage
+        #     ADD CONSTRAINT my_constraint
+        #     CHECK (
+        #       (chats_directchatmessage.reply_to_id IS NULL) OR
+        #       (chats_directchatmessage.chat_id = (SELECT chats_directchatmessage.chat_id FROM chats_directchatmessage WHERE chats_directchatmessage.id = chats_directchatmessage.reply_to_id))
+        #     )
+        #     """,
+        #     reverse_sql="""
+        #         ALTER TABLE chats_directchatmessage
+        #         DROP CONSTRAINT my_constraint
+        #     """)
+    ]
+