Add Upper index for email in EmailAddress model

allauth/account/migrations/0005_emailaddress_idx_upper_email.py

@@ -0,0 +1,20 @@
+# Generated by Django 4.2.4 on 2023-08-23 18:17
+
+import django.db.models.functions.text
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("account", "0004_alter_emailaddress_drop_unique_email"),
+    ]
+
+    operations = [
+        migrations.AddIndex(
+            model_name="emailaddress",
+            index=models.Index(
+                django.db.models.functions.text.Upper("email"),
+                name="account_emailaddress_upper_email",
+            ),
+        ),
+    ]

allauth/account/models.py

@@ -2,8 +2,9 @@
 
 from django.core import signing
 from django.db import models
-from django.db.models import Q
+from django.db.models import Index, Q
 from django.db.models.constraints import UniqueConstraint
+from django.db.models.functions import Upper
 from django.utils import timezone
 from django.utils.translation import gettext_lazy as _
 
@@ -41,6 +42,7 @@ class Meta:
                     condition=Q(verified=True),
                 )
             ]
+        indexes = [Index(Upper("email"), name="account_emailaddress_upper_email")]
 
     def __str__(self):
         return self.email