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# Remove duplicate objects where there is more than one field to compare
https://stackoverflow.com/a/13700642

# Simple one-liner
UserProfile.objects.values('fullname').order_by().annotate(max_id=models.Max('owner_id'), count_id=models.Count('owner_id')).filter(count_id__gt=1)

# Print all SQL to console
'loggers': {
        'django.db.backends': {
            'level': 'DEBUG',
            'handlers': ['console', ],
        },