snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

zerver/migrations/0429_user_topic_case_insensitive_unique_toghether.py

@@ -0,0 +1,33 @@
+# Generated by Django 4.1.6 on 2023-02-11 05:16
+
+import django.db.models.functions.text
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("zerver", "0428_remove_realm_email_address_visibility"),
+    ]
+
+    operations = [
+        migrations.AlterUniqueTogether(
+            name="usertopic",
+            unique_together=set(),
+        ),
+        # Before adding the constraint, remove any pre-existing duplicates from the table
+        migrations.RunSQL(
+            """
+        DELETE FROM zerver_usertopic WHERE id NOT IN (SELECT max(id) FROM zerver_usertopic GROUP BY (user_profile_id, stream_id, upper(topic_name::text)));
+        """,
+            elidable=True,
+        ),
+        migrations.AddConstraint(
+            model_name="usertopic",
+            constraint=models.UniqueConstraint(
+                models.F("user_profile"),
+                models.F("stream"),
+                django.db.models.functions.text.Lower("topic_name"),
+                name="usertopic_case_insensitive_topic_uniq",
+            ),
+        ),
+    ]