fix: drop processed column if it exists

apps/event_hub/migrations/0008_remove_processed_if_exists.py

@@ -0,0 +1,29 @@
+from django.db import migrations
+
+def remove_processed_if_exists(apps, schema_editor):
+    # Get the database connection
+    connection = schema_editor.connection
+
+    with connection.cursor() as cursor:
+        # Check if processed column exists
+        cursor.execute("""
+            SELECT column_name 
+            FROM information_schema.columns 
+            WHERE table_name = 'event_hub_eventlog' 
+            AND column_name = 'processed';
+        """)
+
+        if cursor.fetchone():
+            # Column exists, so drop it
+            cursor.execute(
+                "ALTER TABLE event_hub_eventlog DROP COLUMN processed"
+            )
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ('event_hub', '0007_alter_delete_at_nullable'),
+    ]
+
+    operations = [
+        migrations.RunPython(remove_processed_if_exists, migrations.RunPython.noop),
+    ]