refactor: add index to ECU user_fk field

enterprise/migrations/0230_alter_enterprisecustomeruser_user_fk_and_more.py

@@ -0,0 +1,31 @@
+# Generated by Django 4.2.16 on 2025-02-19 20:20
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('enterprise', '0229_enterprisecustomeruser_user_fk_and_more'),
+    ]
+
+    operations = [
+        # Custom SQL to add indexes with zero-downtime options
+        migrations.RunSQL(
+            sql="""
+                ALTER TABLE enterprise_enterprisecustomeruser
+                ADD INDEX idx_enterprise_user_fk (user_fk),
+                ALGORITHM=INPLACE,
+                LOCK=NONE;
+
+                ALTER TABLE enterprise_historicalenterprisecustomeruser
+                ADD INDEX idx_historical_enterprise_user_fk (user_fk),
+                ALGORITHM=INPLACE,
+                LOCK=NONE;
+            """,
+            reverse_sql="""
+                ALTER TABLE enterprise_enterprisecustomeruser DROP INDEX idx_enterprise_user_fk;
+                ALTER TABLE enterprise_historicalenterprisecustomeruser DROP INDEX idx_historical_enterprise_user_fk;
+            """
+        ),
+    ]

enterprise/models.py

@@ -1066,7 +1066,7 @@ class EnterpriseCustomerUser(TimeStampedModel):
     user_fk = models.IntegerField(
         null=True,
         blank=False,
-        db_index=False,
+        db_index=True,
     )
     active = models.BooleanField(default=True)
     linked = models.BooleanField(default=True)